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CC VN THP

CNG TY TNHH NIPPON STEEL & SUMITOMO METAL VIT NAM

2

Nhiu s la chn v hnh dng v chng loiC nhiu loi Cc vn thp a dng v gi tr M un mt ct cho mi m tng c, t 874 n 21.846 cm3/m. iu ny cho php la ra loi cc vn thp kinh t nht, ph hp vi cc yu cu thit k v phng php thi cng theo d nh.

Kh nng ng cc v kn nc rt caoCc khe h gia hai kho ni ca cc Cc vn thp khp vi nhau va , m bo kh nng ng cc rt cao v kn nc ng tin cy.

Cc c im

(1) C kh nng thi cng nhanh: phng php ny gip gim ng k thi gian thi cng

(2) C tin cy s dng lu di: Tng h s an ton v lm gim bin dng ca tng c bng cch s dng Cc vn thp cng cao

(3) C kh nng cho cc di v cc ngm su: Chiu di cc t n 38m

(4) C tnh bn vng: C th nh ln v ti s dng nhiu ln(5) C kh nng thi cng trong cc khu vc cht hp

u im ca cc vn thp so vi cc cng ngh khc (tng xy gch-, tng b tng ct thp, vv..)

Lu : Khi mi n lc c thc hin m bo tnh chnh xc ca cc thng tin trong n phm ny, ngi c phi t chu trch nhim vi thng tin ny. Nippon Steel & Sumitomo Metal Corporation khng chu trch nhim/m bo vic s dng thng tin y. Cc thng tin trong n phm ny c th thay i hoc sa i m khng cn thng bo. Xin vui lng lin h Nippon Steel & Sumitomo Metal Corporation nhn c thng tin mi nht.Vui lng khng sao chp tri php hoc sao chp cc ni dung ca n phm ny.Tn ca sn phm v dch v ca chng ti th hin trong n phm ny l cc nhn hiu hoc nhn hiu ng k bn quyn ca Nippon Steel & Sumitomo Metal Corporation, cc cng ty lin kt hoc bn th ba cp quyn cho Nippon Steel & Sumitomo Metal Corporation hoc cc cng ty trc thuc. Tn sn phm hoc dch v khc hin th c th l cc nhn hiu hoc c ng k thng hiu bi cc ch s hu tng ng.

Ni dung1. Tng quan1Cc ng dng 32V d v cc gii php c xut 73Cc dng sn phm 94Cp thp v dung sai 115Quy trnh sn xut 136H thng h tr k thut ca chng ti 152. Cc sn phm1Cc vn thp kiu ci m 172Cc vn thp cng cao c t hp

t cc vn kiu ci m vi cc tho hnh ch H 21

3Cc vn thp kiu sn thng 254Phng php Cc vn thp vy 265Cc vn thp hnh ch U 276Tng c t hp 297Cc NS-SP-J 318Cc vn thp bo gc: dng cun 333. Cc loi ph kin1Cc vn thp bo gc 352Thanh neo, khung dn hng, p ph 363Phng php ng cc 384Phng php ni cc 415 kn nc 426H thng chng n mn 42

Cc ng dng v cc kiu cu to ca Cc vn thp

Dn u k nguyn mi v Cc ng thp vi tinh thn tin phong Cc vn thp ca tp on Nippon Steel & Sumitomo Metal c s dng trong nhiu lnh vc (cng trnh cng v hi cng, k bo v sng, tng chn v vng vy ngn nc) v c s chp nhn cao t th trng nh cht lng sn phm v hiu qu thi cng rt cao khi s dng chng. Nippon Steel & Sumitomo Metal, a ra rt nhiu cc phng php cn thp, gia cng ch to v thi cng phong ph trong cc lnh vc ny, nh vy ginh c uy tn ln cho tp on. Da trn tch ly cht xm ca cc chuyn gia k thut hng u, Nippon Steel & Sumitomo Metal pht trin v xut gii php th trng s dng cc sn phm sn c ca mnh. Nippon Steel & Sumitomo Metal s tip tc n lc pht trin cc sn phm mi, nng cao c tnh ca Cc vn thp mt cch y hn v p ng nghim ngt hn t nhu cu a dng ca khch hng trong tng lai.

Knh thy li

Cc vn thp kiu hng t do

H iu tit lu lng


Gia c mi dc


Tng chn cng trnh ng b


Tng k ln bin

Cc vn thp kiu vy

Tng bo v bn

Cc vn thp c neo

Tng chn tm thi


Tng c thp kiu h ging chng

chn sng

Cc vn thp kiu tng i

p ngn l

Cc vn thp kiu tng iK bo v sng


Cc vn thp kiu c neo

Khu vc x l cht thi

Cc vn thp kiu c neo chnh tr sng

ng dn cng ch

Tng c thp kiu h ging chng

Cc vn thp kiu c neo

Tng chn

Bi rc thi trn mt bin

Cc vn thp kiu vy

o nhn to

Cc vn loi ming

Bo v mng tr cu

Cc vn thp kiu vy

3 4

CC VN THPNIPPON STEEL & SUMITOMO METAL

Tng bo v bn, tng chn, o nhn to

Tng quanCc sn phm

Cc loi ph kin

Tng quan

Vng vy ngn ncTng chn

5 6


K bo v sng Tng chn tm thi

Tng quanCc sn phm

Cc loi ph kin

Bo v mng tr cu

Thit b chng va x cho mng tr

7 8


H o quy m nh

H o quy m ln

S dng ti trng thng ng dc trc nh ti trng cu v d kin sc chu ti chng li ti trng thng ng. Cng tc Hn khng th tin hnh gn cng trng.

V d v cc gii php c xut

Chng ti mun s dng din tch t mt cch ti a. Bn c th cung cp mt Cc vn thp tt?

Bn c phng php cc vn thp no thn thin vi mi trng khng?

Cc bn c loi Cc vn thp no c th thi cng mt cch d dng khng?

Bn c th cung cp mt phng php tt xy dng mt tng k ln bin quy m ln?

Chng ti mun gim thiu bin dng m bo an ton khi o t mt trc ca Cc vn thp. Bn c th cung cp mt Cc vn thp tt?

Mi cc ca tng c c hnh dng v cng ng nht. Do ch cn mt loi my ng cc thi cng v lp t tun t theo cng mt hng. iu ny gip vic thi cng rt d dng. (Tham kho trang 15 v 16).

y l mt loi tng trng lc c c tnh dng hnh tr c lp rp t cc Cc vn thp kiu sn thng, bn trong c y ct. N c n nh kt cu hon ho. Phng php Cc vn thp vy lp t sn s gip thi cng nhanh chng. (Tham kho trang 17 v 18).

Khng ging mt tng chn t tm thi bng b tng, tng cc vn thp c ti s dng nhiu ln v thn thin vi mi trng. Trong thi cng, khng to ra bn v khng phi x l t. (Tham kho trang 13 n 16).

M men qun tnh ln gn gp i so vi Cc vn thp hnh ch Z. iu ny gip gim c bin dng v s lng thanh chng. Cc Cc vn thp c th c ti s dng nhiu ln. (Tham kho trang 15 v 16).

Cc khe h gia cc tai ni khp vi nhau va , gip cho vic ng Cc vn thp c d dng sau khi cc Cc ng vn thp c thi cng trc . Cc khe h ny c th trit tiu c vic b tr km chnh xc ca Cc ng vn thp v Cc vn thp. (Tham kho trang 23 v 24).

y l mt loi tng trng lc trong cc Cc vn thp c thi cng thnh 2 hng. Phn u cc c lin kt vi nhau bng cc thanh neo. Khong gia hai hng c s c lp y bng ct. y cng l cng ngh c n nh kt cu vt tri. Bng cch chia cng trng xy dng thnh nhiu khu vc v ghp thnh cc i tng cc vn thp, thi gian ch thi cng c th gim xung..

Cc vn thp l mt cng ngh tt thi cng tng k mt cch nhanh chng. Chc nng c bit cn thit cho thi cng k ln bin l s n nh khng li sng bin n khi hon thnh cng tc ci to. Kt cu ny phi an ton ngay c khi khng c ci to li.

Chiu su xp x 10 m 15 m

Tng chn t tm thi

Cc tai ni nm pha ngoi cng ca mt ct ngang. Do khng cn phi xt ti vic trit gim c tnh mt ct, y l mt li th ca Cc vn thp hnh ch U. iu ny gip gim c s lng cc thanh chng. Cc Cc vn thp c th c ti s dng nhiu ln. (Tham kho trang 13 v 14).

Tng c t hp t cc vn thp hnh ch U hoc kiu ci m vi Cc ng vn thp

Tng i cc vn thp

Cc vn thp kiu ci m

Cc vn thp cng cao c t hp t cc vn kiu ci m vi cc hnh ch H

Cc vn thp cng cao c t hp t cc vn kiu ci m vi cc hnh ch HCc vn thp vy

Cc vn thp cng cao c t hp t cc vn kiu ci m vi cc hnh ch H Cc vn thp kiu ci m

Tp on Nippon Steel & Sumitomo Metal cung cp cc gii php ton din. Chng ti c mt i ng k s cng trnh ti tr s chnh v cc vn phng nc ngoi. Chng ti c th xut phng n thit k ti u sn phm thng qua tho lun vi khch hng trong mt thi gian nht nh sau khi nhn c cc iu kin thit k. y l h tr k thut min ph ca chng ti cho khch hng. ( ngh ca chng ti ch l tham kho cho khch hng. Phn chu trch nhim quyt nh vn s ty thuc vo khch hng). (Xem trang 11 n 12). Lun c sn cc kiu dng v kch c cc vn thp. Cc kiu dng v kch c ti u s c la chn da trn cc iu kin thit k v phng php thi cng. (t 874 cm3/m n 21.846 cm3/m). (Xem trang 7 v 8).

Chiu su xp x hoc nh hn 10m

Lp t yu

Lp t chu lc

Lp t yu

Lp t chu lc

Lp t yu

Lp t chu lc

Trong trng hp thi cng tng k bo v b bin ni c lp t yu hin hu, vic ngm mi Cc vn thp vo lp chu lc s gip b c bin php ci thin nn t yu - khng nh phng php ging chm b tng hay k . y l mt phng php thn thin mi trng. (Tham kho trang 17 v 18).

p ngn nc bin

Cc vn thp vy

Khng s dng ti trng thng ng theo phng dc trc nh ti trng cu. Cng tc Hn c th c tin hnh gn cng trng.

Cc vn NS-SP-J v my nn-p cc chuyn dng c th thi cng tng chn t khng cn khng gian no. iu ny cho php s dng ton b mt bng n ht gii hn bin cng trng. (Tham kho trang 25 v 26).

Q

Q

Q

Q

Q

Cc NS-SP-JTi thiu. 0mm

Kt cu hin ti

Tng quanCc sn phm

Cc loi ph kin

Hnh dng Kiu

M men qun tnh

M un mt ct

Khi lng n v

Chiu di ti a

Cp thp

JIS A 5523 JIS A 5528 KS F4604 EN10248 ASTM

I (cm4/m) Z(cm3/m) W (kg/m2) L (m) SYW295 SYW390 SYW430 SY295 SY390 SY300 S355GP S430GP A572Gr.50

Cc vn thp kiu ci m

ci mw = 900 mm

NS-SP-10H 10.500 902 96 30*2 *1 *1 *1 *1

NS-SP-25H 24.400 1.610 126 30*2 *1 *1 *1 *1

NS-SP-45H 45.000 2.450 163 30*2 *1 *1 *1 *1

NS-SP-50H 51.100 2.760 186 30*2 *1 *1 *1 *1

ci m+cc hnh ch H

w = 900 mm

NS-SP-10H+HYNS-SP-25H+HY

88.000 ti 1.316.000

2.320 ti 19.970 169

ti 514 30*2

Vui lng tham kho cc NS-SP-10H v cc NS-SP-25H. Cc hnh ch H cng c trong tiu chun JIS, ASTM v BS.*2

ci m+(ci m+cc hnh ch H)w = 900 mm

NS-SP-10H+HY 146.000 ti

248.000 2.660 ti 4.330 160 ti 191 30*2

Cc vn thp kiu sn thng

Dng sn thng

w = 500 mm

NS-SP-FL 396 89 123 38*2 *1 *1 *1

NS-SP-FXL 570 121 154 38*2 *1

Cc vn thp hnh ch U

Hnh ch Uw = 600 mm

NS-SP-w 13.000 1.000 103 30*2 *1 *1 *1

NS-SP-w 32.400 1.800 136 30*2 *1 *1 *1

NS-SP-w 56.700 2.700 177 30*2 *1 *1 *1

w = 500 mm

NS-SP-VL 63.000 3.150 210 30*2 *1

NS-SP-VIL 86.000 3.820 240 30*2 *1

w = 400 mm

NS-SP- 8.740 874 120 25*2 *1 *1 *1 *1 *1 *1 NS-SP- 16.800 1.340 150 30*2 *1 *1 *1 *1 *1 NS-SP-A 22.800 1.520 146 30*2 *1 *1 *1 *1 *1 *1 *1

NS-SP- 38.600 2.270 190 30*2 *1 *1 *1 *1 *1

Tng c t hp

Cc ng vn thp + cc ci

m hay cc hnh ch U

SP 800 ti 2000 +w,w,w,

10H, 25H,45H, 50H

98.753 ti2.184.589

2.469 ti21.846 178

ti 401 30*2Vui lng tham kho cc NS-SP-10H, NS-SP-25H, NS-SP-45H, NS-SP-50H, NS-SP-IIw, NS-SP-IIIw v cc NS-SP-INw,

Cc ng thp cng c trong tiu chun JIS, ASTM v BS.*2

Cc NS-SP-J NS-SP-Jw = 600 mm NS-SP-J 12.090 1.175 145 30*2 *1 -*1 *1

*1) Xin vui lng lin h vi chng ti. *2) Xin vui lng lin h chi tit vi chng ti trc t hng.9 10


t

W

h

Dng sn phm

W

th

W

h

W

h

W

h

W

h

w

th

w

th

w

th

w

th

w

th

w

th

w

th

w

th

w

th

w

th

Tng quanCc sn phm

Cc loi ph kin

Cp thp v cc dung sai

Tiu chun JIS A 5523:2012 : Cc vn thp cn nng hn cTiu chun JIS A 5528:2012 : Cc vn thp cn nng

Tiu chun BS EN 10248-1 : 1996Cc vn thp cn nng khng hp kimPhn 1. Cc iu kin giao hng v k thut

Tiu chun BS EN 10248-2 : 1996Cc vn thp cn nng khng hp kimPhn 2. Cc dung sai v hnh dng v kch thc

Tiu chun ASTM A6/A6M-12Tiu chun k thut cho cc yu cu chung i vi thp kt cu dng cun, thp tm, thp hnh v cc vn thp.

Tiu chun ASTM A572M / A572-12Thp kt cu hp kim thp Columbi-Vanadi c cng cao Phn 1. Cc iu kin giao hng v k thut

Phn loi Cp thpGii hn

chy N/mm2

Cng bn koN/mm

Mu th dn

di%

Nng lng hp th trong TN Charpy, J Kiu loi v hng kim tra mu th

Nhit th nghim

Mu th kch thc tiu chun Mu th kch thc ph

1010mm 107.5mm 105mm

Cc vn thp cn nng c th hn c JIS A 5523

SYW295 Ti thiu

295Ti thiu

450S 1A Ti thiu 18

0 Ti thiu 43 Ti thiu 32 Ti thiu 22Vnh ch V theo hng

cn thp

S 14B Ti thiu 24

SYW390 Ti thiu

390Ti thiu

490S 1A Ti thiu 16S 14B Ti thiu 20

Cc vn thp cn nng JIS A 5528

SY295 Ti thiu

295Ti thiu

450S 1A Ti thiu 18

S 14B Ti thiu 24

SY390 Ti thiu

390Ti thiu

490S 1A Ti thiu 16S 14B Ti thiu 20

Ghi ch: Thnh phn ha hc v cc tnh cht c l u tun theo Tiu chun JIS A 5523:2012 v JIS A 5528:2012.N c th hin theo tng s, ph hp vi Mc 5, Ghi ch 2 ca Tiu chun JIS A 5523:2012.

Cc tnh cht c l

1) Xem gii hn c th trong Tiu chun ny.

* Vui lng lin h trc vi chng ti.

Cc tnh cht c l

Cp thp

Gii hn chy ti

thiu (N/mm2)

Cng bn ko ti

thiu(N/mm)1)

dn di ti thiu trn di chun o

L0 = 5.65 S0 mm(%)

S355GP 355 480 22

S430GP 430 510 19

* Vui lng lin h trc vi chng ti.

Cp thpGii hn chy ti

thiu

Cng bn ko ti

thiu

gin di ti thiu (%)

50 50Ksi (345Mpa)65Ksi

(450Mpa)Di 8inch (200mm) : 18Di 2inch (50mm) : 21

Cc tnh cht c l

Phn loi Cp thpThnh phn ha hc (%) Ceq. (%)

C Si Mn P S N Ceq.Cc vn thp cn nng hn c

SYW295 Ti a0,18

Ti a0,55

Ti a1,50

Ti a0,040

Ti a0,040

Ti a0,0060

Ti a 0,44SYW390 Ti a 0,45

Cc vn thp cn nng

SY295 Ti a0,040Ti a0,040 SY390

Lu : Ceq. = C + Mn/6 + Si/24 + Ni/40 + Cr/5 + Mo/4 + V/14

Thnh phn ha hc qua phn tch mu th

Cp thpThnh phn ha hc (%) ti a 1)

C Mn Si P S N1)

S355GP0,24 1,60 0,55 0,045 0,045 0,009

S430GP


1) Xem gii hn c th trong tiu chun ny.

Cp thpThnh phn ha hc (%) ti a

C Mn Si P S

50 0,23 1,351) 0,40 0,04 0,05


11 12


Cp hng mc JIS A5523, JIS A 5528 Kiu sn thngJIS A 5523 JIS A 5523 JIS A 5528

Hnh ch U Kiu ci m Hnh ch U

Chiu rng 4 mm 1 %

2w, 3w, 4w+ 6 mm- 5 mm+ 10 mm- 5 mm

+ 10 mm- 5 mm

Chiu cao 4 % 4 %

Chiu dy+ 1,5 mm- 0,7 mm

t < 10 mm

10 t < 16 mm

t 16 mm

+ 1,0 mm - 0,3 mm+ 1,2 mm - 0,3 mm+ 1,5 mm - 0,3 mm

t < 10 mm 1,0 mm 10 t < 16 mm 1,2 mm

t 16 mm 1,5 mm

thng

( bin dng) L 10 m L > 10 m( vng)L 10 m L > 10 m

L 0,15% (L-10) 0,1% + 15 mm

L 0,20% (L-10) 0,20% + 20 mm

( bin dng)L 0,10%

Ti a 20 mm( vng)L 0,20%

Ti a 20 mm

( bin dng) L 10 m L > 10 m ( vng)L 10 m L > 10 m

L 0,12% (L-10) 0,10% + 12 mm

L 0,25% (L-10) 0,20% + 25 mm

Chiu di + Khng quy nh -0mm

vung gc ca 2 u 4%b 4%b 4%b

chnh lch chiu rng

tng th

Trong vng 1m ca phn u cc theo hng chiu di, chnh lch gia chiu rng tng th ti thiu v ti a khng ln hn 4 mm.

lch u cc

Trong vng 1m ca phn u cc theo hng chiu di, lch u cc khng ln hn 1,5 mm.

Gc khp to vi kha ni 6,0 4,0

b

h

t

t

b

Cc dung sai

L

b

b

p

p

p

p

b

b

p

p

p

p

L

q Hng mc ASTM A6

Chiu di + 125 mm- 0 mm

Dung sai khi lng 2,5%

Cc dung sai

L

Hng mc BS EN 10248-2

Chiu rng 2% b

Chiu cao h 200h > 200 4 mm 5 mm

Chiu dy t 8,5t > 8,5 0,5 mm 6 % t

thng 0,2 % L

Chiu di 200

vung gc ca 2 u 2%b

Kha ni trn tit din

ngang

(Kiu sn thng)a - b 7,0 mm

(Hnh ch U) a - b 4.0

mm

Dung sai khi lng 5%

b

h

t

t

b

L

b

b

p

p

p

p

b

b

p

p

p

p

L

q

Cc dung sai

Kiu sn thng Kiu U

a

b

a

b

a

b

a

b

Vui lng lin h vi chng ti trong trng hp cc dung sai trn c p dng.

Vui lng lin h vi chng ti trong trng hp cc dung sai trn c p dng.

Tng quanCc sn phm

Cc loi ph kin

L nung gia nhit Thnh phm Sau khi thi cngL luyn st L luyn oxy c bn My c lin tc

13 14


Dao ct nng

Cc my cn trung gian th hai My cn tinh

My cn nn thngThnh phm

L nung gia nhit

My cn th

Cc my cn trung gian th nht

Quy trnh sn xut

Tng quanCc sn phm

Cc loi ph kin

vi

Qung st

Than

Nh my nung kt

Nh my luyn than cc L luyn st Np st nng chy

Thit b kh kh chn khng c lin tc

L luyn xy c bn

Np ph liu

Thi kh xy

Xe ch st nng chy

15 16


H thng h tr k thut ca chng tiTp on Nippon Steel & Sumitomo Metal l nh cung cp hng u th gii v Cc vn thp cn nng. Ngoi kh nng cung ng sn phm, chng ti cn cung cp s h tr k thut min ph theo danh sch lit k di y nhm p ng yu cu ca khch hng. i ng k thut t Tp on Nippon Steel & Sumitomo Metal v cc vn phng nc ngoi c th ph khp th trng ton cu.

Thng Hi

Thng Hi Jakarta

Sydney

Chicago

So Paulo

Bangkok

Belo Horizonte

Mexico

Houston

Bc Kinh

Qung ng

Tokyo

New Delhi Dubai

Dusseldorf

New York

Vn phng c cc k s vt liu xy dng

Cc vn phng nc ngoi

Cn c vo cc iu kin thit k do khch hng cung cp v b lu d liu thit k rt ln ca mnh, chng ti c th cung cp mt phng n thit k ti u.

Cc xut thit k lin quan ti thit k nhng kt cu c s/chi tit (tm thi/vnh cu) c s dng cc sn phm Cc vn thp.

Cung cp thng tin v cc phng php thi cng kt cu c s dng Cc vn thp.Nhng xut thit k lin quan n cc phng php phng chng s n mn cho cc sn phm Cc

vn thp.Hng dn cch sn xut cc sn phm gia cng ch to, vv..

xut thit k

Hng dn gia cng ch toChng ti c chun b trc cc ti liu Hng dn gia cng ch to v c th cung cp ch dn ti cng trng.

xut phng php thi cngDa trn cc thnh tu, chng ti c th cung cp nhiu loi xut khc nhau, bao gm c nhng vn lin quan n vic la chn loi my thi cng ti u nht theo iu kin t nn.

xut phng php phng chng n mnVi kinh nghim tch ly, chng ti c th cung cp rt nhiu khuyn co.

Hng dn gia cng Ch dn gia cng ch to

Thng qua cc vn phng di y, chng ti xem xt rt nhiu cc cng ngh khc nhau v chng ti t chc cc hi tho, cc trin lm v bui trnh din thi cng, vv.., trn ton th gii.

24,309

10,822

45,000

= 90,000

= 1,305(m)

90,000

6,366

19,00

7

21,645

Khong cch thn tng chnh

Chi

u r

ng t

ng

chuy

n ti

p

(Tm thp tng cng cho u kp ba rung)

Mt ct ngang

Lc phn b cc vn phng

Lu : Trn y ch l mt phn cc h tr k thut min ph qu khch hng tham kho. Trch nhim quyt nh ty thuc vo qu khch hng.

Vit Nam

Tng quanCc sn phm

Cc loi ph kin

Gii php A: Cc vn thp vy

(Cc vn thp vy)

Gii php C: Cc xi mng t trn su (Cement Deep Mixing-CDM) + Cc ng vn thp kiu tng i

Gii php B: Cc ng vn thp / Cc vn thp kiu tng i

Gii php D: Cc vn thp kiu tng n

t san lp

t ph sa

t ph sa t ph sa

t ph sa

Trm tch bin

Trm tch bin

Trm tch bin

Trm tch bin

t san lp

t b nhim

Ci thin nn t yu

t san lp

t san lp

Hng dn gia cng cc vn ci m+cc hnh ch H

Tp on Nippon Steel & Sumitomo Metal

Thng 5 nm 2012

17 18


Cng nng ng cc u vitDin tch mt ct ngang ca Cc vn thp kiu ci m to ra cng nng

ng cc vt tri.

tin cy kt cu caoKhng c yu cu trit gim i vi c trng mt ct khi xt n kh nng thiu s truyn

lc ct ti cc kha tai ni, iu ny c xc thc trn Cc vn thp hnh ch U.

Hiu qu chi ph rt ttLng thp trn mi n v tng c c gim xung, gip ci thin c

chi ph tng th.

Hnh dng

Cc c trng mt ct

Kiu loi

Kch thc Cho mi cc Trn mi m chiu rng tng c

Chiu rng c hiu

Wmm

Chiu cao c hiu

hmm

Chiu dy t

mm

Din tch

cm2

M men qun tnh

cm4

M un mt ct

cm3

Khi lng n v

kg/m

Din tch mt ct

cm2/m

M men qun tnh

cm4/m

M un mt ct

cm3/m

Khi lng n v

kg/m2

NS-SP-10H 900 230 10,8 110,0 9.430 812 86,4 122,2 10.500 902 96,0

NS-SP-25H 900 300 13,2 144,4 22.000 1.450 113 160,4 24.400 1.610 126

NS-SP-45H 900 368 15,0 187,0 40.500 2.200 147 207,8 45.000 2.450 163

NS-SP-50H 900 370 17,0 212,7 46.000 2.490 167 236,3 51.100 2.760 186

Cc vn thp kiu ci m

Cc sn phm

W

th

Mi kha ni cho php mt xoay nht nh. Gc khp ti thiu to vi tai ni (gc xoay kha ni) ging nhau khi kt hp cc loi Cc vn thp kiu ci m c th hin trong hnh minh ha bn di.

Tnh tng thch

Gc xoay

44

Cc c trng mt ct ca Cc vn thp kiu ci m sau khi hao tn do n mn 1mm cho mi pha, tng cng 2mm cho c 2 pha, c trnh by trong bng di y:

Cc bc tnh ton c trng mt ct sau khi b n mn: Gi thit tc n mn v tui th cng trnh. Sau tnh ton

hao tn do n mn pha bin t (mm) v hao tn do n mn pha t lin t (mm). Tnh T l hao tn do n mn (=t/t). T hao tn do n mn pha bin t (mm) v T l hao tn do n

mn , xc nh c H s trit gim c trng mt ct sau khi b n mn da trn cc biu . TTnh c c trng mt ct sau khi b n mn, Z v I, bng cch

nhn ln lt c trng mt ct trc khi n mn Z v I vi h s trit gim .

M un mt ct Z = Z M men qun tnh I I

Io, Zo : M men qun tnh v M un mt ct khi khng b n mn : H s trit gim sau khi b n mnI, Z : M men qun tnh v M un mt ct sau khi b n mn

Kiu loi c trng mt ct khi khng b n mn c trng mt ct vi hao tn mm do n mn cho mi pha

I0 cm4/m Z0 cm3/m % I cm4/m Z cm3/mNS-SP-10H 10.500 902 79 8.300 713

NS-SP-25H 24.400 1.610 82 20.000 1.320

NS-SP-45H 45.000 2.450 85 38.300 2.080

NS-SP-50H 51.100 2.760 87 44.500 2.400

c trng mt ct sau khi b n mn

th xc nh H s trit gim ca c trng mt ct,

: H s trit gim c trng mt ct sau khi b n mn (%)t, t : Hao tn do n mn pha bin v pha t lin (mm) : T l hao tn do n mn, t/tCh : Ch c cc phm vi nh minh ha l hiu qu trong cc th sau.

t1

t2

t1

t2

t1

t2

t1

t2

t1

t2

Tng quanCc sn phm

Cc loi ph kin

10,8

900

230 300

13,2

900

15

900

368

17

370

900

NS-SP-10H

NS-SP-45H

NS-SP-25H

NS-SP-50H

NS-SP-50HNS-SP-10H NS-SP-25H NS-SP-45H

t1 (mm)

%

100

90

80

70

60

500 1 2 3 4

t1 (mm)

%

100

90

80

70

60

500 1 2 3 4 5 6 7

t1 (mm)

%

100

90

80

70

60

500 1 2 3 4 5 6

=0=0,25=0,5=0,75=1,0

=0=0,25=0,5=0,75=1,0

t1 (mm)

%

100

90

80

70

60

500 1 2 3 4 5

=0=0,25=0,5=0,75=1,0

=0=0,25=0,5=0,75=1,0

NS-SP-25H

NS-SP-50H

NS-SP-10H

NS-SP-45H

Dng n v Cc vn thp hnh ch U B D

Cc n hay Cc i khng un mp 0,40-0,80 0,30-0,55

Cc i c hn hoc un mp 0,70-1,00 0,60-0,90

Trong , B: H s k n kh nng trit gim M un mt ct Cc vn thp hnh ch

U do s truyn lc ct khng hon ton gia cc kha tai ni.D: H s k n kh nng trit gim M men qun tnh Cc vn thp hnh

ch U do s truyn lc ct khng hon ton gia cc kha tai ni.

H s trit gim c trng mt ct do thiu tnh lin khi ca kha ni

* w: Khi lng Cc vn thp (t/m/cnh)

* Tnh ton th nghim ca chng ti

V d v trng hp th nghim ti s dng khi dng ba rung

V d v trng hp th nghim ti s dng khi dng phng php nn-p

19 20


Tnh lin khi ca kha ni trong Cc vn thp

Khi mt tng c s dng Cc vn thp hnh ch U n s chu un do tc ng ca p lc t hay cc ti trng ngang khc, mt lc ct un ln s xut hin kho ni ca cc Cc vn thp v cc kho ni ny c t trc tm tng c (v tr trc trung ha).Trong trng hp ny, khi lc ct khng c truyn hon ton gia cc cc n vi nhau, cc kha ni s trt khi nhau v M men qun tnh cng nh M un mt ct ca tng cc vn thp s b gim bt. iu ny c th xem nh thiu tnh lin khi ca kha ni. V mc gim c biu th bng h s trit gim. Ngc li, i vi tng c s dng Cc vn thp kiu ci m, khng c yu cu trit gim c trng mt ct do cc kha ni c t mp ngoi cng ca tng c, ngha l lc ct s khng xut hin ti cc kha ni. Cc h s trit gim ca cc c trng mt ct s theo tng tiu chun. V d di y l trong tiu chun Chu u, Eurocode

Tnh lin khi ca kha ni trong Cc vn thp kiu ci m

V d mt thit k th nghim ca tng chn tm thi

So snh khi lng thp gia Cc vn hnh ch U v kiu ci m, cc c trng mt ct b gim bt khi p dng cc h s kha ni

Cc th nghim ko un cho Cc vn thp kiu ci m trong dng tng c cng nh di dng cc n v ang c trin khai. Chng khng nh rng gi tr thit k tnh ton ca quan h Ti trng-Chuyn v l tng ng vi cc gi tr thc nghim. iu ny chng t vic gim bt c trng mt ct l khng cn thit.

H s trit gim ly cho cc Cc vn thp hnh ch U l 0,45 i vi M men qun tnh, v l 0,6 cho M un mt ct, so snh Cc vn thp hnh ch U v kiu ci m trong cng cc iu kin thit k. Cc NS-SP-25H (kiu ci m) cho thy kt qu thit k gn nh tng ng vi cc NS-SP-IV (hnh ch U) v s lng cc hng thanh chng ngn cng nh chiu di Cc vn thp hu nh bng nhau. Tuy nhin, khi lng ca cc NS-SP-25H (kiu ci m) ch bng 66% so vi cc NS-SP-IV (hnh ch U). Khi s dng cc NS-SP-45H (kiu ci m), din tch cng tc tng ln trong sut qu trnh o t vi ch duy nht mt hng thanh chng v hiu qu cng tc qu trnh gia cng kt cu b tng c ci thin rt ln, cho php gim gi thnh thi cng kt cu b tng ny. Mc d khi lng thp tng ln khi so snh vi cc NS-SP-25H, nhng cc NS-SP-45H vn ch bng 89% so vi cc NS-SP-IV (hnh ch U), do vn c th thu c hiu qu t vic gim khi lng thp.

Chng ti tin hnh nh gi hiu qu khi ti s dng Cc vn thp kiu ci m cn c trn cc th nghim hin trng. Cho n nay, chng ti thc hin cc th nghim i vi cc trng hp ca nhng phng php thi cng khc nhau v d nh phng php ba rung v phng php nn-p.

u im ca vic khng gim bt cc c trng mt ct do tnh lin khi ca kha ni

Trng hp nh gi hiu qu khi ti s dng Cc vn thp kiu ci m

Tham kho: Tiu chun Eurocode, ph lc cho quc gia Lin hip Vng quc Anh, 3. Thit k kt cu thp, Phn 5: Cc (NA +A1:2012 t Tiu chun BS EN 1993-5:2007)

Trch dn t JASPP (Hip hi Cc ng thp Nht Bn); Cc vn thp kiu ci m rng 900

Pm0: Ti trng n hi (gi tr th nghim)

Pm0: Ti trng n hi (gi tr th nghim)

Py0: Ti trng chy do (gi tr tiu chun)

Cc n

Cc i un mp

700

600

500

Ti t

rng

[kN

/m]

400

300

200

100

0

0 50

1,6m 1,6m 1,6m

100 150 200

Chuyn v [mm]

Py0: Ti trng chy do (gi tr tiu chun)

- 1,00

- 3,00

- 5,00

-12,00

+ 0,00

- 1,00

- 3,00

- 5,00

-12,00

+ 0,00

- 1,00

- 5,00

-12,50

+ 0,00

CtN =10=19kN/m=30

2

CtN =10=19kN/m=30

2CtN =10=19kN/m=30

2

o t khngphng:-5,50

o t khngphng:-5,50

o t khngphng:-5,50

Cc vn thp hnh ch U(NS-SP-IV)w = 2,28 (t/m/cnh)

(1,00)

Cc vn thp kiu ci m(NS-SP-25H)w = 1,51 (t/m/cnh)

(0,66)

Cc vn thp kiu ci m(NS-SP-45H)w = 2,04 (t/m/cnh)

(0,89)

Trc trung ha ca tng c sau khi thi

Trc trung ha ca mi cc trng khp vi trc trung ha ca tng c sau khi thi cng.

Trc trung ha ca mi cc n.

Cc vn thp kiu ci m

Cc vn thp hnh ch U

p lc t

p lc t

0

10.000

20.000

30.000

40.000

50.000

60.000

60 80 100 120 140 160 180 200 220 240

M

men

qu

n tn

h ch

o m

i m

chi

u

rng

tn

g c

(cm

4 /m

)

0

500

1.000

1.500

2.000

2.500

3.000

3.500

60 80 100 120 140 160 180 200 220 240

Khi lng n v cho mi m chiu rng tng c (kg/m2) Khi lng n v cho mi m chiu rng tng c (kg/m2)

M

un

mt

ct

cho

mi

m c

hiu

r

ng t

ng

c (

cm3 /

m)

D=0,9

D=0,3

B=1,0

B=0,4

ww

wL

ww

wL

NS-SP-45H

NS-SP-50H NS-SP-50H

NS-SP-45H

NS-SP-25H

NS-SP-10H

NS-SP-25H

NS-SP-10H

0

10.000

20.000

30.000

40.000

50.000

60.000

60 80 100 120 140 160 180 200 220 240

M

men

qu

n tn

h ch

o m

i m

chi

u

rng

tn

g c

(cm

4 /m

)

0

500

1.000

1.500

2.000

2.500

3.000

3.500

60 80 100 120 140 160 180 200 220 240

Khi lng n v cho mi m chiu rng tng c (kg/m2) Khi lng n v cho mi m chiu rng tng c (kg/m2)

M

un

mt

ct

cho

mi

m c

hiu

r

ng t

ng

c (

cm3 /

m)

D=0,9

D=0,3

B=1,0

B=0,4

ww

wL

ww

wL

NS-SP-45H

NS-SP-50H NS-SP-50H

NS-SP-45H

NS-SP-25H

NS-SP-10H

NS-SP-25H

NS-SP-10H

Tng quanCc sn phm

Cc loi ph kin

21 22


Cc hnh ch H

Kiu c bn Kiu xen k

900

Cc vn thp kiu ci m

Lu : Loi cc trung gian trong kiu xen k trn l NS-SP-10H

ng hn gc

Vng hn

Cc hnh ch H

Cc vn thp kiu ci m

ng hn gc

C sn rt nhiu loi c trng mt ctCc vn thp cng cao c t hp t cc vn kiu ci m vi cc hnh ch H, c to thnh t vic kt hp mt trong bn kiu Cc vn thp kiu ci m vi nhiu loi cc hnh ch H khc nhau. Thc t to c hn 200 kiu c tnh mt ct rt kinh t ( cng mt ct cho mi m tng c: xp x t 2.320 n 19.970 cm3/m)

D dng gia cngCc vn thp cng cao c t hp t cc vn kiu ci m vi cc hnh ch H rt d gia cng, ch bng vic t hp Cc vn kiu ci m v cc hnh ch H bi cc ng hn gc khng lin tc. Cng tc hn c th tin hnh ngay ti cng trng hoc gn xng, nh my.

Hiu qu chi ph rt ttXt trn quan im thit k loi Cc vn thp cng cao c t hp t cc vn kiu ci m vi cc hnh ch H, chc nng ca Cc vn kiu ci m s nh mt tng c lin tc chn t v nc, cn Cc hnh ch H ng vai tr l mt thnh phn kt cu chu m men un. iu ny c th gip vic dng Cc hnh ch H gi r gim c khi lng t 50% n 70%, cng nh trnh phi s dng cc lin kt t tin khc ni mt cc vn thp vi mt n nguyn.

D dng thi cngC th dng mt ba rung thng thng trc tip ng cc. Loi Cc vn thp cng cao c t hp t cc vn kiu ci m vi cc hnh ch H ny, c m men qun tnh trn mi cc cao hn cc vn cc hnh ch Z v cc loi cc vn thp khc, do vy rt d dng cho thi cng.

Cc vn thp cng cao c t hp t cc vn kiu ci m vi cc hnh ch H V d ng dng NSHYPER BEAMkch thc JIS tiu chun. Cc loi kch thc khc xin vui lng lin h trc vi chng ti.

Cc c trng mt ct

c im



Cc neo

Thanh neo


Hnh dng

Cc v d v ng dng Tng c bo v bn cho

cng thit b v tng bn ca xng ng tu Cc kt cu tng chn

t tm thi v vnh cu phc v thi cng o h cc ng hm Cc tng chn t cho

p p cao

ng hn gc: T l hn: 40 - 60%

Kiu c bn

Kiu xen k

Mt ct cc ci m- cc hnh ch H

Khi lng trn mim2 tng

Din tch mt ct M un mt ct M men qun tnh

kg/m2 cm2/m cm3/m cm4/m

10H + H400x200x9x12x13 169 215 2.320 88.000

10H + H450x200x9x12x13 172 220 2.560 106.000

10H + H500x200x9x12x13 176 225 2.820 126.000

10H + H500x200x9x16x13 190 242 3.270 142.000

10H + H550x200x9x16x13 194 247 3.580 168.000

10H + H550x200x9x19x13 204 260 3.940 181.000

10H + H550x250x9x16x13 208 265 4.100 187.000

10H + H600x200x12x16x13 212 271 4.270 208.000

10H + H600x200x12x19x13 222 283 4.640 222.000

10H + H650x200x12x19x13 228 290 5.060 258.000

10H + H700x200x12x19x18 234 298 5.540 300.000

10H + H700x200x12x22x18 244 311 5.960 317.000

10H + H700x250x12x19x18 250 319 6.270 331.000

10H + H700x200x12x25x18 254 323 6.370 335.000

10H + H750x250x12x19x18 256 326 6.770 378.000

10H + H750x250x12x22x18 268 342 7.330 403.000

10H + H800x250x12x22x18 273 348 7.900 459.000

10H + H900x250x14x19x18 286 365 8.810 563.000

10H + H900x250x14x22x18 299 381 9.470 598.000

10H + H900x250x16x22x18 314 400 9.890 616.000

10H + H950x250x16x22x18 321 409 10.570 689.000

10H + H1000x250x16x22x18 328 418 11.270 766.000

10H + H1000x250x16x25x18 340 433 11.980 807.000

10H + H1000x250x16x28x18 352 449 12.670 846.000

10H + H1000x250x16x32x18 369 470 13.590 897.000

25H + H1000x300x16x25x18 392 499 14.310 1.014.000

25H + H1000x250x16x32x18 399 508 14.640 1.032.000

25H + H1000x300x16x28x18 407 518 15.180 1.065.000

25H + H1000x300x16x32x18 426 543 16.330 1.130.000

25H + H1000x300x19x32x18 451 574 17.080 1.164.000

25H + H1000x250x19x40x18 455 580 17.210 1.170.000

25H + H1000x300x19x36x18 471 599 18.180 1.225.000

25H + H1000x300x19x40x18 490 624 19.280 1.286.000

25H + H1000x300x22x40x18 514 655 19.970 1.316.000

Mt ct cc ci m- cc hnh ch H

Khi lng trn mim2 tng

Din tch mt ct M un mt ct M men qun tnh

kg/m2 cm2/m cm3/m cm4/m

10H + H700x200x12x16x18 160 204 2.660 146.000

10H + H700x200x12x19x18 165 210 2.870 155.000

10H + H700x250x12x16x18 167 213 2.970 159.000

10H + H700x200x12x22x18 170 216 3.080 164.000

10H + H700x250x12x19x18 173 221 3.240 171.000

10H + H750x250x12x19x18 176 224 3.480 194.000

10H + H750x250x12x22x18 182 232 3.760 207.000

10H + H800x250x12x22x18 185 235 4.040 235.000

10H + H800x250x12x25x18 191 243 4.330 248.000

Tng quanCc sn phm

Cc loi ph kin

23 24


Phng php thi cng

D dng gia cng ti cng trng

V d v trng hp th nghim ti s dng khi dng ba rung

V d v trng hp th nghim ti s dng khi dng my nn-p

Thi cng bng my nn-p

Hng dn gia cng

Mt mt do n mn c xt n da trn Tiu chun Eurocode 3, Thit k cc kt cu thp, Phn 5: Cc (BS EN 1993-5:2007). mt mt do n mn pha bin (t1) cn c trn cc gi tr ngh ca nc bin trong vng kh hu n i, thuc on ngp thng xuyn hay vng nc thy triu ln xung, nh th hin trong Bng 4-2. mt mt do n mn pha t lin (t2) c da trn cc gi tr khuyn ngh cho t t nhin khng b xo trn (Ct, bn ct, t st, phin, v..v..), nh trong Bng 4-1.

Chng ti tin hnh nh gi hiu qu khi ti s dng Cc vn thp cng cao c t hp t cc vn kiu ci m vi cc hnh ch H, cn c trn cc th nghim hin trng. Cho n nay, chng ti thc hin cc th nghim i vi nhng phng php thi cng khc nhau chng hn nh cc phng php ba rung v cc phng php nn-p.

Cc phn di y th hin kt qu so snh gia cc Cc ct chng, loi thng c s dng nh vt liu thp dng cho tng chn tm thi, khu vc ng Nam , vi Cc vn thp cng cao c t hp t cc vn kiu ci m vi cc hnh ch H.

Cc vn thp cng cao c t hp t cc vn kiu ci m vi cc hnh ch H, c th d dng gia cng ngay ti cng trng thi cng hoc gn xng, nh myChng ti c chun b trc cc hng dn s dng cho vic gia cng ch to v c th cung cp ch dn ti cng trng.

V d v cc c trng mt ct sau khi b n mn ca tng c kiu c bn

Trng hp nh gi hiu qu khi ti s dng Cc vn thp cng cao c t hp t cc vn kiu ci m vi cc hnh ch H

V d tnh ton th nghim v cc li ch trong trng hp p dng Cc vn thp cng cao c t hp t cc vn kiu ci m vi cc hnh ch H, so vi cc loi tng chn t hin hu khc

Phng php gia cng

Pha t lin

Pha bin

Thi cng bng ba thy lc Thi cng bng ba rung

Hng mc

Cc ct chng Cc ci m+Cc hnh ch HMt ct to-dng Mt ct t hp

Phcha

400 400

1600

900

900

900

Mt ct

Cc hnh ch H: UB610229243Cc vn thp kiu ch U: NS-SP-IV cng mt ct Z=6.264cm3/mM men qun tnh I=168.000cm4/m

Z tng ng=6.770cm3/mNS-SP-10H + H7502501219

I tng ng=168.000cm4/mNS-SP-10H + H550200916

400

350

300

250

200

150

100

50

0Cc ct chng

Khi

ln

g th

p tr

n m

i m

chi

u r

ngt

ng

c (k

g/m

2)

Cc ci m+Cc hnh ch H Cc ci m+Cc hnh ch H(Z tng ng) (I tng ng)

25%

43%

342

256194

* Tnh ton th nghim ca chng ti

cng mt ct M men qun tnh

: H s trit gim c trng mt ct sau khi b n mn (%)

* Vui lng lin h vi chng ti bit thm chi tit.

100 (%)

0 25 50 t(nm) t(nm)

90

80

70

100 (%)

0 25 50

90

80

70

NS-SP-10H+H700200121913 NS-SP-10H+H900250141918

NS-SP-25H+H1000250163218

100 (%)

0 25 50 t(nm) t(nm)

90

80

70

100 (%)

0 25 50

90

80

70

NS-SP-10H+H700200121913 NS-SP-10H+H900250141918

NS-SP-25H+H1000250163218

100 (%)

0 25 50 t(nm) t(nm)

90

80

70

100 (%)

0 25 50

90

80

70

NS-SP-10H+H700200121913 NS-SP-10H+H900250141918

NS-SP-25H+H1000250163218

t1 : n mn pha bin (mm) t=25 nm, t1=0,9mm t=50 nm, t1=1,75mmt2 : n mn pha t lin (mm) t=25 nm, t2=0,3mm t=50 nm, t2=0,6mm

Tng quanCc sn phm

Cc loi ph kin

Hng dn gia cng cc vn ci m+cc hnh ch H

Tp on Nippon Steel & Sumitomo Metal

Thng 5 nm 2012


25 26

44,5

9,5

500

NS-SP-FL

47,0

12,7

500

NS-SP-FXL

y l loi cc vn thp lun t ho c cng bn ko cc k cao ti phn kha ni ca n, ln n 5,88 MN trn mi mt di ca tai ni v thch hp dng trong cc kt cu tng vy, v d nh tng k bo v bn, tng bao o nhn to, vng vy ngn nc v cc d n tng t khc.Ngoi ra, chng ti cn c th cung ng loi cc c chiu di ln nht hin nay: ti a 38,0m.

bn ca tai niKiu loi Cng bn ko (MN/m)

NS-SP-FL 3,92

NS-SP-FXL 5,88

Hnh dng

Thi cng nhanhCc phng php cc vn thp lp ghp sn c

th rt ngn thi gian thi cng mt cch ng k.

Phng php thn thin mi trngKhng cn cc bin php ci thin t yu trong

trng hp cc Cc vn thp ngm vo lp t chu lc, khi phn cc ngm c th chu c p lc t.

c im

NS-SP-FL NS-SP-FXL

Cc c trng mt ct

Kiu loi

Kch thc Cho mi cc Cho mi m chiu rng tng c

Chiu rng c hiu

Wmm

Chiu cao c hiu

h mm

Chiu dy

t mm

Din tch mt ct

cm2

M men qun tnh

cm4

M un mt ct

cm3

Khi lng n v

kg/m

Din tch mt ct

cm2/m

M men qun tnh

cm4/m

M un mt ct

cm3/m

Khi lng n v

kg/m2

NS-SP-FL 500 44,5 9,5 78,57 184 45,7 61,7 157,1 396 89 123

NS-SP-FXL 500 47,0 12,7 98,36 245 60,3 77,2 196,7 570 121 154

Gc xoayMi kha ni cho php mt xoay nht nh.

Gc khp ti thiu to vi tai ni (gc xoay

kha ni) cho s kt hp ca cc phin bn

ging ht nhau ca Cc vn thp kiu sn

thng c th hin trong hnh minh ha bn

di.

Cc vn thp kiu sn thng Phng php Cc vn thp vy

NS-SP-FL:=12,5NS-SP-FXL:=10

Phng php lp t ti ch cng c sn

Tng quanCc sn phm

Cc loi ph kin

Phng php bn lp ghp

Phng php thi cng

lt is the unquestioned desire of man that the sea be aIlowed to remain in its natural state, clean and unpolluted. However, poIIution in one form or another has continued for many years, making it necessary for many countries to introduce IegisIation to protect the sea. Japan is no exception, and restrictions with regard to marine construction work and waste disposal have been tightened. For these reasons, Nippon SteeI Corporation has developed a non-polluting,high-speed prefabricated sheet pile ceIl method ( the Prefab CelI Method ),which incorporates all the advantages and none of the disadvantages of the conventional sheet pile cell method. With the new Prefab Cell Method, straight-web sheet piles are fixed in cellular form at an assembly site set up in caIm waters or on a speciaI barge near the installation site. The celI is then transported to the site and driven into the sea bed by a number of vibro-hammers operating simultaneously.

The Prefabricated Sheet Pile Cell Methodan Innovative, High-speed Marine Construction Method that Ensures Freedom from Sea Water Pollution.

ContentsIntroduction 1

Flow Chart of the Prefab Cell Method 2

Assembly Site and Vibro-hammers Play Important Roles in the Prefab Cell Method 4 Assembly site for the floating crane method 4 Vibro-hammers with multiple chucks 4Specification of Straight Web Sheet Pile 5 Material Quality 5 Tolerances 5 Sectional Properties 5

1

Sn ph

B tng ph

hcSan lp

on cung trn

xp kha chn cc

Phn ngm su vo nn t

Cc vn thp kiu sn thng

y ct

t san lp

B tng bao ph

Notice: While every effort has been made to ensure the accuracy of the information contained within this publication, the use of the information is at the readers risk and no warranty is implied or expressed by Nippon Steel Corporation with respect to the use of information contained herein.The information in this publication is subject to change or modification without notice. Please contact the Nippon Steel office for the latest information.

Phng php lp ghp sn

600

130

10,3

600

180 13

,4

600

210 18

,0

400

170 15

,5

400

125

13,0

400

100

10,5

500

200 24

,3

500

225 27

,6

400

150 13

,1

600

130

10,3

600

180 13

,4

600

210 18

,0

400

170 15

,5

400

125

13,0

400

100

10,5

500

200 24

,3

500

225 27

,6

400

150 13

,1

600

130

10,3

600

180 13

,4

600

210 18

,0

400

170 15

,5

400

125

13,0

400

100

10,5

500

200 24

,3

500

225 27

,6

400

150 13

,1


27 28

Cc vn thp c mt ct kiu ch U vn ang c s dng rng ri cho rt nhiu loi kt cu tm thi cng nh vnh cu v l mt trong nhng Cc vn thp quen thuc nht i vi c ngi thit k v ngi dng.

Cc NS-SP-, , A, , L c thit k lin tc. Cc loi mt ct ny c bit thch hp cho vic ti s dng nhiu ln v c c s chp nhn cao ca th trng cng nh t ngi s dng.Mt ct cc vn thp kiu ch U a ra cc gi tr cng mt ct

dao ng t 874cm3/m n 3.820cm3/m.

Kiu loi


Chiu rng c hiu

W mm

Chiu cao c hiu

h mm

Chiu dy

t mm

Din tch mt ct

cm2

M men qun tnh

cm4

M un mt ct

cm3

Khi lng n v

kg/m

Din tch mt ct

cm2/m

M men qun tnh

cm4/m

M un mt ct

cm3/m

Khi lng n v

kg/m2

NS-SP- 400 100 10,5 61,18 1.240 152 48,0 153,0 8.740 874 120

NS-SP- 400 125 13,0 76,42 2.220 223 60,0 191,0 16.800 1.340 150

NS-SP-A 400 150 13,1 74,40 2.790 250 58,4 186,0 22.800 1.520 146

NS-SP- 400 170 15,5 96,99 4.670 362 76,1 242,5 38.600 2.270 190

NS-SP-L 500 200 24,3 133,8 7.960 520 105 267,6 63.000 3.150 210

NS-SP-L 500 225 27,6 153,0 11.400 680 120 306,0 86.000 3.820 240

NS-SP-W 600 130 10,3 78,70 2.110 203 61,8 131,2 13.000 1.000 103

NS-SP-W 600 180 13,4 103,9 5.220 376 81,6 173,2 32.400 1.800 136

NS-SP-W 600 210 18,0 135,3 8.630 539 106 225,5 56.700 2.700 177

Cc c trng mt ct WX X

t

h

Io, Zo : M men qun tnh v cng mt ct khi khng b n mn

: H s trit gim sau khi b n mnI, Z : M men qun tnh v cng mt ct sau khi b n

mn

Cc bc tnh ton c trng mt ct sau khi b n mn: Gi thit tc n mn v tui th cng trnh. Sau

tnh ton mt mt do n mn pha bin t (mm) v mt mt do n mn pha t lin t (mm).

Tnh T l mt mt do n mn (=t/t) T mt mt do n mn pha bin t (mm) v T l mt

mt do n mn , xc nh c H s trit gim ca c trng mt ct sau khi b n mn da trn cc biu .

Tnh c c trng mt ct sau khi b n mn, Z v I, bng cch nhn ln lt c trng mt ct trc khi n mn Z0, v I0 vi h s trit gim .

cng mt ct Z = Z0 M men qun tnh I = I0

t1 t1

t1

t2

t1t2

t2

t1

t2

t2

t1t2

Pha bin

Chiu di ton b

Pha t lin

: H s trit gim ca c trng mt ct sau khi b n mn (%)t, t : mt mt do n mn pha bin v pha t lin (mm) : T l mt mt do n mn, t/tCh : Ch c cc di phm vi nh minh ha l hiu qu trong cc th

sau.


600

NS-SP-

NS-SP-

NS-SP-W

NS-SP-

NS-SP-L

NS-SP-W NS-SP-W

NS-SP-L

NS-SP-A

Cc hnh dngNS-SP-W NS-SP-W NS-SP-W

Tnh tng thchNS-SP-

NS-SP-L NS-SP-LNS-SP-W

NS-SP-NS-SP-

NS-SP-W

NS-SP-A

NS-SP-W

Mi kha ni cho php mt xoay nht nh. Gc khp ti thiu to vi tai ni (gc xoay kha ni) cho s kt hp cc phin bn ging ht nhau ca Cc vn thp kiu ch U c th hin trong hnh minh ha bn di.

Gc xoay

6

6

NS-SP- NS-SP- NS-SP-A

NS-SP- NS-SP-L NS-SP-L

Cc vn thp kiu ch U

Tng quanCc sn phm

Cc loi ph kin

Cc ng vn thp Cc vn thp Tng c t hp

ng knh Chiu dyC li haitai ni

M men qun tnh

Khi lng cc ng

Khi lng tai ni Kiu loi

S lng cc vn thp

Khong rngM men

qun tnhKhi lng

cc vnKhong rng

M men qun tnh

M un mt ct

Khi lng n v

D(mm) t(mm) bj(mm) (cm4/cc) (kg/m/cc) (kg/m/2 ng) bsp(mm) (cm4/bsp) (kg/m/cc) (mm) (cm4/m) (cm/m) (kg/m/m)

800 9,0 965 174.940 176 69,4 NS-SP-10H 1 900 9.450 86 1.865 98.858 2.471 178 813 9,0 978 183.707 178 69,4 NS-SP-10H 1 900 9.450 86 1.878 102.841 2.530 178 864 10,0 1.029 244.621 211 69,4 NS-SP-10H 1 900 9.450 86 1.929 131.697 3.049 190 900 10,0 1.065 276.876 219 69,4 NS-SP-10H 1 900 9.450 86 1.965 145.698 3.238 191 914 11,0 1.079 318.112 245 69,4 NS-SP-10H 1 900 9.450 86 1.979 165.502 3.621 202 965 11,0 1.130 375.107 259 69,4 NS-SP-10H 1 900 9.450 86 2.030 189.418 3.926 204

1.000 11,0 1.165 417.922 268 69,4 NS-SP-10H 1 900 9.450 86 2.065 206.940 4.139 205 1.016 12,0 1.181 476.985 297 69,4 NS-SP-10H 1 900 9.450 86 2.081 233.728 4.601 218 1.067 12,0 1.232 553.420 312 69,4 NS-SP-10H 1 900 9.450 86 2.132 263.985 4.948 219 1.100 13,0 1.265 655.774 348 69,4 NS-SP-10H 1 900 9.450 86 2.165 307.234 5.586 233 1.118 13,0 1.283 688.890 354 69,4 NS-SP-10H 1 900 9.450 86 2.183 319.870 5.722 234 1.168 13,0 1.333 786.691 370 69,4 NS-SP-10H 1 900 9.450 86 2.233 356.502 6.104 236 1.200 14,0 1.365 917.281 409 69,4 NS-SP-10H 1 900 9.450 86 2.265 409.117 6.819 250 1.219 14,0 1.384 962.072 416 69,4 NS-SP-10H 1 900 9.450 86 2.284 425.323 6.978 250 1.270 14,0 1.435 1.089.459 434 69,4 NS-SP-10H 1 900 9.450 86 2.335 470.584 7.411 252 1.300 15,0 1.465 1.250.028 475 69,4 NS-SP-10H 1 900 9.450 86 2.365 532.504 8.192 267 1.321 15,0 1.486 1.312.315 483 69,4 NS-SP-10H 1 900 9.450 86 2.386 553.920 8.386 268 1.372 16,0 1.537 1.566.821 535 69,4 NS-SP-10H 1 900 9.450 86 2.437 646.755 9.428 283 1.400 16,0 1.565 1.665.889 546 69,4 NS-SP-10H 1 900 9.450 86 2.465 679.596 9.709 285 1.422 16,0 1.587 1.746.594 555 69,4 NS-SP-10H 1 900 9.450 86 2.487 706.033 9.930 286 1.473 17,0 1.638 2.060.877 610 69,4 NS-SP-10H 1 900 9.450 86 2.538 815.668 11,075 302 1.500 17,0 1.665 2.177.656 622 69,4 NS-SP-10H 1 900 9.450 86 2.565 852.607 11.368 303 1.524 17,0 1.689 2.285.093 632 69,4 NS-SP-10H 1 900 9.450 86 2.589 886.198 11.630 304 1.575 18,0 1.740 2.668.433 691 69,4 NS-SP-10H 1 900 9.450 86 2.640 1.014.273 12.880 321 1.600 18,0 1.765 2.799.033 702 69,4 NS-SP-10H 1 900 9.450 86 2.665 1.053.761 13.172 322 1.626 18,0 1.791 2.939.307 714 69,4 NS-SP-10H 1 900 9.450 86 2.691 1.095.703 13.477 323 1.676 19,0 1.841 3.394.987 776 69,4 NS-SP-10H 1 900 9.450 86 2.741 1.241.951 14.820 340 1.700 19,0 1.865 3.544.640 788 69,4 NS-SP-10H 1 900 9.450 86 2.765 1.285.292 15.121 341 1.727 19,0 1.892 3.718.184 800 69,4 NS-SP-10H 1 900 9.450 86 2.792 1.335.017 15.461 342 1.778 20,0 1.943 4.267.787 867 69,4 NS-SP-10H 1 900 9.450 86 2.843 1.504.374 16.922 360 1.800 20,0 1.965 4.430.010 878 69,4 NS-SP-10H 1 900 9.450 86 2.865 1.549.442 17.216 361 1.829 21,0 1.994 4.874.533 936 69,4 NS-SP-10H 1 900 9.450 86 2.894 1.687.507 18.453 377 1.880 21,0 2.045 5.298.742 963 69,4 NS-SP-10H 1 900 9.450 86 2.945 1.802.320 19.174 380 1.900 21,0 2.065 5.471.593 973 69,4 NS-SP-10H 1 900 9.450 86 2.965 1.848.456 19.457 381 1.930 22,0 2.095 6.001.716 1.035 69,4 NS-SP-10H 1 900 9.450 86 2.995 2.006.933 20.797 398 1.981 22,0 2.146 6.495.920 1.063 69,4 NS-SP-10H 1 900 9.450 86 3.046 2.135.569 21.561 400 2.000 22,0 2.165 6.686.751 1.073 69,4 NS-SP-10H 1 900 9.450 86 3.065 2.184.589 21.846 401

Cc ng vn thp Cc vn thp Tng c t hp

ng knh Chiu dyC li haitai ni

M men qun tnh

Khi lng cc ng

Khi lng tai ni Kiu loi

S lng cc vn thp

Khong rngM men

qun tnhKhi lng

cc vnKhong rng

M men qun tnh

M un mt ct

Khi lng n v

D(mm) t(mm) bj(mm) (cm4/cc) (kg/m/cc) (kg/m/2 ng) bsp(mm) (cm4/bsp) (kg/m/2 cc) (mm) (cm4/m) (cm/m) (kg/m/m)

800 9,0 965 174.940 176 69,4 NS-SP-w 2 1.200 38.880 163 2.165 98.753 2.469 189 813 9,0 978 183.707 178 69,4 NS-SP-w 2 1.200 38.880 163 2.178 102.188 2.514 189 864 10,0 1.029 244.621 211 69,4 NS-SP-w 2 1.200 38.880 163 2.229 127.176 2.944 199 900 10,0 1.065 276.876 219 69,4 NS-SP-w 2 1.200 38.880 163 2.265 139.394 3.098 200 914 11,0 1.079 318.112 245 69,4 NS-SP-w 2 1.200 38.880 163 2.279 156.630 3.427 210 965 11,0 1.130 375.107 259 69,4 NS-SP-w 2 1.200 38.880 163 2.330 177.662 3.682 211

1.000 11,0 1.165 417.922 268 69,4 NS-SP-w 2 1.200 38.880 163 2.365 193.135 3.863 212 1.016 12,0 1.181 476.985 297 69,4 NS-SP-w 2 1.200 38.880 163 2.381 216.641 4.265 222 1.067 12,0 1.232 553.420 312 69,4 NS-SP-w 2 1.200 38.880 163 2.432 243.524 4.565 224 1.100 13,0 1.265 655.774 348 69,4 NS-SP-w 2 1.200 38.880 163 2.465 281.784 5.123 236 1.118 13,0 1.283 688.890 354 69,4 NS-SP-w 2 1.200 38.880 163 2.483 293.078 5.243 236 1.168 13,0 1.333 786.691 370 69,4 NS-SP-w 2 1.200 38.880 163 2.533 325.900 5.580 238 1.200 14,0 1.365 917.281 409 69,4 NS-SP-w 2 1.200 38.880 163 2.565 372.743 6.212 250 1.219 14,0 1.384 962.072 416 69,4 NS-SP-w 2 1.200 38.880 163 2.584 387.335 6.355 251 1.270 14,0 1.435 1.089.459 434 69,4 NS-SP-w 2 1.200 38.880 163 2.635 428.180 6.743 253 1.300 15,0 1.465 1.250.028 475 69,4 NS-SP-w 2 1.200 38.880 163 2.665 483.606 7.440 266 1.321 15,0 1.486 1.312.315 483 69,4 NS-SP-w 2 1.200 38.880 163 2.686 503.013 7.616 266 1.372 16,0 1.537 1.566.821 535 69,4 NS-SP-w 2 1.200 38.880 163 2.737 586.622 8.551 280 1.400 16,0 1.565 1.665.889 546 69,4 NS-SP-w 2 1.200 38.880 163 2.765 616.509 8.807 282 1.422 16,0 1.587 1.746.594 555 69,4 NS-SP-w 2 1.200 38.880 163 2.787 640.598 9.010 283 1.473 17,0 1.638 2.060.877 610 69,4 NS-SP-w 2 1.200 38.880 163 2.838 739.820 10.045 297 1.500 17,0 1.665 2.177.656 622 69,4 NS-SP-w 2 1.200 38.880 163 2.865 773.606 10.315 298 1.524 17,0 1.689 2.285.093 632 69,4 NS-SP-w 2 1.200 38.880 163 2.889 804.365 10.556 299 1.575 18,0 1.740 2.668.433 691 69,4 NS-SP-w 2 1.200 38.880 163 2.940 920.792 11.693 314 1.600 18,0 1.765 2.799.033 702 69,4 NS-SP-w 2 1.200 38.880 163 2.965 957.073 11.963 315 1.626 18,0 1.791 2.939.307 714 69,4 NS-SP-w 2 1.200 38.880 163 2.991 995.650 12.247 316 1.676 19,0 1.841 3.394.987 776 69,4 NS-SP-w 2 1.200 38.880 163 3.041 1.129.116 13.474 332 1.700 19,0 1.865 3.544.640 788 69,4 NS-SP-w 2 1.200 38.880 163 3.065 1.169.098 13.754 333 1.727 19,0 1.892 3.718.184 800 69,4 NS-SP-w 2 1.200 38.880 163 3.092 1.215.013 14.071 334 1.778 20,0 1.943 4.267.787 867 69,4 NS-SP-w 2 1.200 38.880 163 3.143 1.370.154 15.412 350 1.800 20,0 1.965 4.430.010 878 69,4 NS-SP-w 2 1.200 38.880 163 3.165 1.411.882 15.688 351 1.829 21,0 1.994 4.874.533 936 69,4 NS-SP-w 2 1.200 38.880 163 3.194 1.538.230 16.820 366 1.880 21,0 2.045 5.298.742 963 69,4 NS-SP-w 2 1.200 38.880 163 3.245 1.644.774 17.498 368 1.900 21,0 2.065 5.471.593 973 69,4 NS-SP-w 2 1.200 38.880 163 3.265 1.687.637 17.765 369 1.930 22,0 2.095 6.001.716 1.035 69,4 NS-SP-w 2 1.200 38.880 163 3.295 1.833.150 18.996 385 1.981 22,0 2.146 6.495.920 1.063 69,4 NS-SP-w 2 1.200 38.880 163 3.346 1.952.902 19.716 387 2.000 22,0 2.165 6.686.751 1.073 69,4 NS-SP-w 2 1.200 38.880 163 3.365 1.998.583 19.986 388


29 30

bj bsp

t

D

b

bj bsp

t

D

b

Hiu qu chi ph xut scTng c t hp to nn t s kt hp ca 7 loi Cc vn thp kiu ch U hoc kiu ci m vi rt nhiu loi Cc ng vn thp khc nhau. Thc t to ra hn 74 loi tng c c c trng mt ct rt kinh t.( cng mt ct cho mi m tng: trn 20.000 cm3/m)

c tnh ng cc caoVic d dng lin kt cc tai ni ln gip vic thi cng nhanh chng v c cht lng cao.

Cht lng vt triS dng cc ca Nippon Steel & Sumitomo Metal lun m bo cht lng cao, cng cao v cng ln.

Chc nng chu cc lc thng ngCc ng vn thp ng vai tr va l cc chu lc theo phng thng ng va l tng chn.

Cc c trngCc kch c khc lun c sn ty thuc vo yu cu. Cc c trng mt ct

Cc ng vn thp + NS-SP-w (2 cc)

Cc ng vn thp + NS-SP-10H (1 cc)

Tng k cho cng thit b v tng cho cng ng tu Cc tng chn t cho k p cao

Cc v d v ng dng Ba rung v ba thy lc cng rt hu ch cho

thi cng cc.

Phng php thi cng

Cc dng kt hp

Cc ng vn thp

(t 800 n 2.000)

Cc vn thp

NS-SP-w (2 cc)NS-SP-w (2 cc)NS-SP-w (2 cc)NS-SP-10H (1 cc)

NS-SP-25H (1 cc)

NS-SP-45H (1 cc)

NS-SP-50H (1 cc)

Tng c t hp

Chiu dy ng tai ni l 9mm hoc 11mmVui lng lin lc vi chng ti v cht lng vt liu ca Cc ng vn

thp.

Vui lng lin lc vi chng ti v c trng mt ct lc b n mn. Trong trng hp ny, chiu di ca cc ng vn thp v cc vn thp l bng nhau.

Tng c kt hp Tng c kt hp

Cc neo

Thanh neo

Tng quanCc sn phm

Cc loi ph kin


31 32

Hnh dng

13,0

600

200

Cc c trng mt ct

Kiu loi


Chiu rng c hiu

W mm

Chiu cao c hiu

h mm

Chiu dy

t mm

Din tch mt ct

cm2

M men qun tnh

cm4

M un mt ct

cm3

Khi lng n v

kg/m

Din tch mt ct

cm2/m

M men qun tnh

cm4/m

M un mt ct

cm3/m

Khi lng n v

kg/m2

NS-SP-J 600 200 13,0 111,2 7.250 705 87,3 185,3 12.090 1.175 145

t

W

h

Thi cng tip cn st bnCc cc NS-SP-J c th c thi cng tip cn st bn cng trnh hin hu, cho php thi cng cc tng chn tip gip ranh gii cng trng v s dng c ti a din tch ca cng trng.

100% Kha ni lin khi vi nhauKhi cc kha ni c t ra ngoi cng ca tng c, khng cn thit xem xt trit gim cc c trng mt ct do s trt gia cc kha ni, v iu ny cho php thit k mt cch kinh t.

Tit kim chi ph v rt ngn cng tc ca cc cng trnh tm thi

Tit kim chi ph v rt ngn thi gian cng tc tm thi khi so snh vi Cc vn thp thng thng c chiu rng hu hiu l 400mm, cc NS-SP-J c chiu rng hu hiu n 600mm. iu ny to kh nng lm gim s lng cc thi cng, vi chi ph thp v ci thin c kn nc.

Gc xoay

4

4

Kiu loic trng mt ct khi khng b n mn c trng mt ct vi mt mt mm do n mn cho mi pha

I0cm/m

Z0cm/m

%

Icm/m

Zcm/m

NS-SP-J 12.090 1.175 85 10.300 999

Cc c trng mt ct sau khi b n mn

Io, Zo : M men qun tnh v cng mt ct khi khng b n mn : H s trit gim sau khi b n mnI, Z : M men qun tnh v cng mt ct sau khi b n mn

Cc bc tnh ton c trng mt ct sau khi b n mn: Gi thit tc n mn v tui th cng trnh. Sau tnh ton mt

mt do n mn pha bin t (mm) v mt mt do n mn pha t lin t (mm). Tnh T l mt mt do n mn (= t/t). T mt mt do n mn pha bin t (mm) v T l mt mt do n mn ,

xc nh c H s trit gim ca c trng mt ct sau khi b n mn da trn cc biu . Tnh c c trng mt ct sau khi b n mn, Z v I, bng cch nhn ln

lt c trng mt ct trc khi n mn Z, v I vi h s trit gim . cng mt ct Z = Z M men qun tnh I = I

=1,0=1,0=0,75=0,75

=0,25=0,25 =0=0

=0,5=0,5

t1 (mm)

(%

)

100

90

80

70

60

500 1 2 3 4 5 6


: H s trit gim ca c trng mt ct sau khi b n mn (%)t, t : mt mt do n mn pha bin v pha t lin (mm) : T l mt mt do n mn, t/tCh : Ch c cc di phm vi nh minh ha l hiu qu trong cc th sau.

t2

t1

t2

t1

t2

t1

t2

t1

t2

t1

* Cc NS-SP-J c th to kha ni vi mt s loi Cc vn thp kiu ch U. Kiu tng thch ca kha ni ph thuc vo cch s dng ti cng trng. Vui lng t vn Tp on Nippon Steel & Sumitomo Metal bit thm chi tit.

Cc NS-SP-J

Tng quanCc sn phm

Cc loi ph kin


33 34

Hnh dng

Tnh tng thch

NS-SP- NS-SP-LNS-SP-

NS-SP-C

NS-SP-

NS-SP-C

NS-SP-Ce

NS-SP-J

Cc c trng mt ct

W

th

Tai ni gcTai ni thng

W

Tai ni gc Tai ni thngth

Kiu loi

Kch thc Mt ccChiu rng

c hiuW

mm

Chiu caoc hiu

h mm

Chiu dyt

mm

Din tchmt ct

cm2

M menqun tnh

cm4

M un mt ct

cm3

Khi lng n v

kg/m

NS-SP-C 400 125 13,0 79,63 2.330 237 62,5

NS-SP-Ce 400 125 13,0 76,40 1.930 222 60,0

NS-SP-C 400 170 15,5 96,76 4.630 337 76,0

NS-SP-C, NS-SP-C

Cc vn thp bo gc

Cc vn thp kiu ch U

90

Cc

vn

thp

ki

u ch

U

Thi cngNS-SP-C, NS-SP-C

L

Chn

Chn

ChnChnL

NS-SP-Ce

Cc vn thp bo gc

Cc vn thp kiu ch U

Cc v

n th

p ki

u ch

U

NS-SP-Ce

Chn

L

Chn

L

L

Chn

Cc vn thp bo gc l mt kiu cc mi c pht trin, sn xut bng phng php cn-cun, thay th cho Cc vn thp bo gc dng ch T c ch to bng phng php hn. Do , b qua c yu cu hn ni v cc quy trnh gia cng khc, hn na n c trng lng nh hn. lp ghp, c th dng cc thit b c thng thng

hin ti ang s dng. c bit, Cc vn Larsen c c chp nhn l c s hnh thnh lin kt bo gc, ngn s bc tch,

do c bit, hiu sut lin kt rt xut sc chng hn nh mi ghp v tn sut bn mi.

tin cy cao

Cc vn thp bo gc: Dng cun

Tng quanCc sn phm

Cc loi ph kin


35 36

Hnh chiu ng

Hnh chiu bng

Hnh chiu ng

Hnh chiu bng

Hnh chiu ng

Hnh chiu bng

Hnh chiu ng

Hnh chiu bng

Cc chi tit thi cng: Thanh neo, thanh np

on bo gc: Thp hnh p tri nng

Mt trong cc phng php lin kt bo gc l phng php s dng thp hnh p tri nng, trong sn phm c hnh thnh bng phng php p tri nng v khng nht thit phi lin quan n phng php hn ti cng trng. Nh th hin trong hnh minh ha sau y, sn phm ny c th dng cho nhiu gc xoay khc nhau.

V20JP c sn xut ti Nht Bn bi Tp on Nippon Steel & Sumitomo Metal theo thm quyn cho php ca PilePro LLC USA

chu lc mt phn ngoi lc tc ng ln Cc vn thp, tng c thng c b sung cc thanh np, thanh neo v dy chng ti phn trn ca Cc vn thp. Cc hnh minh ha sau y s trnh by mt v d v lp t thanh neo v thanh np.

Cc v

n th

p m

t tr

c

Cc

vn

neo

Tng

Thanh npKhp vng

on bo gc: Cc vn thp hnh dng bt quy tc

Cc Cc vn thp hnh dng bt quy tc c dng thay i tuyn ng cc thng thng, dng hiu chnh cc im giao ca tng Cc vn thp, hoc chnh sa nghing ca tuyn ng cc thng thng ca tng c. Cc vn thp hnh dng bt quy tc c ch to bng cch ct sng thn cc, rp chng li theo hnh dng nh v hn ni.

; im c ng hn

; im c ng hn

V d v hnh dng on ni ca Cc vn thp kiu ch U V d v hnh dng on bo gc ca Cc vn thp kiu ch U

Cc vn thp c hiu chnh gc

Mt cc vn thp c hiu chnh gc s iu chnh c gc khi ng cc. Loi cc vn ny c ch to bng mt trong hai cch ty theo 2 phng php thi cng sau: mt l ghp ni hai Cc vn thp c thn cc b ct xin vi nhau; v hai l ct thng dc thn mt Cc vn thp sau ni chng li cng vi mt tm thp hnh thang c chn vo gia. Khi s dng tm thp hnh thang, cn phi s dng thp c cng tng ng hoc ln hn cng ca vt liu c s to nn Cc vn thp.

Cc vn thp

tm thp hnh thang (Vt liu c cng bng hoc ln hn cng ca vt liu c s)

t2t2

t1 t1

(b) Dng tm thp hnh thang(Ch cn 1 Cc vn thp)

t1>t2

(a) Ct xin phn thn Cc vn (Cn 2 mnh Cc vn thp)

Cc vn thp

tm thp hnh thang (Vt liu c cng bng hoc ln hn cng ca vt liu c s)

t2t2

t1 t1

V d v mt h thng thanh neo

Lp thanh np vo mt sau ca Cc vn thp

Lp thanh neo vo mt trc ca Cc vn thp

Lp thanh np vo mt trc ca Cc vn thp

Lp thanh np vo mt sau ca Cc vn thp

Cc loi ph kin

Tng quanCc sn phm

Cc loi ph kin


37 38

ng Cc vn thp kiu ci m

ng mt Cc vn thp kiu ch U

ng mt Cc vn thp kiu ch UCc chi tit thi cng: Khung dn hng

Cc chi tit thi cng: p ph bng b tng

Khi ng cc Cc vn thp, cn phi lp t cc khung dn hng m bo chnh xc v tr ng cc v n nh cho cc Cc vn thp trong sut qu trnh thi cng. Di y trnh by mt v d vi hai hng khung dn hng c ng cch nhau 2 n 4m, v song song vi hng ng, trong h khung dn hng c t bn trong.

ngn nga nc lt vo kha ni hoc nng cao hiu qu kha ni trong Cc vn thp kiu ch U, chng ta thng tin hnh p ph bng b tng ln phn u tng cc vn thp. Di y l mt v d

24m

Cc dn hngKhung dn hng

D13D13 D13 D13,

Hnh chiu cnh Hnh chiu bng

5070

H H

2H+(25)cm

Cc dn hng

Khung dn hng

Cc vn thp

Cc dn hng

Phng php rung lc

Phng php ng cc

Cc cc vn thp c ng vo t nn bng cch truyn vo chng cc lc rung lc ln-xung sinh ra t ba rung. Khi lc va p khng s dng, u cc s khng b h hi, hiu qu ng cc cao v rt hu ch cho c cng tc ng cc xung v nh cc ln.

ng mt Cc vn thp cng cao t hp t cc vn kiu ci m vi cc hnh ch H

Tng quanCc sn phm

Cc loi ph kin


39 40

Cc Cc vn thp c nn-p bng my c c ch thy lc, bng cch ngm vo phn gia Cc vn thp trong lc vn to ra phn lc bng cch gi cht cc cc ng trc . My ng cc nh gn, khng cn cu lp, tuy nhin n vn cn phn cu ring bit treo gi Cc vn thp. N kh thi cho iu kin ng cc nhng ni cht hp v mt bng nh. N cng c th ng cc nhng iu kin yu cu ting n nh v rung chn thp. Khi t nn qu cng, vic ng cc s rt kh khn nu ch dng mi my p, lc ny my to xi nc s rt hu ch khi c gn cng.

Phng php nn-p

ang nn-p Cc vn thp kiu ch U

My nn-p cho Cc vn thp kiu ch U

ang nn-p Cc vn thp NS-SP-J

My nn-ep cho cc NS-SP-J (Thi cng tip cn st bn)

ang nn-p Cc vn thp kiu ci m

My nn-p cho Cc vn thp kiu ci m

Hnh chiu bng

Hnh chiu bng

Hnh chiu bng

Hnh chiu cnh

Hnh chiu cnh

Hnh chiu cnh

V d v vic thi cng cc s dng ba thy lc

Phng php ng

Phng php ng l phng php trong Cc vn thp c ng vo t nn bng lc va p t ba thy lc hoc ba diesel. Thng thng mt m cc c gn vo u Cc vn thp trnh u cc b un dc, cong on. Cc Cc vn thp c th d dng c ng vi lc va p ln nhng v tr c sc khng t nn cao hoc sc khng ct ln.

V d v mt m cc cho Cc vn thp cng cao c t hp t cc vn kiu ci m vi cc hnh ch H

Tng quanCc sn phm

Cc loi ph kin


41 42

(b) Cc vn thep kiu ci m

(a) Cc vn thp kiu ch U

Khi s dng Cc cc vn thp, i khi phi ni nhiu cc c c mt cc c chiu di xc nh Nhn chung, phng php hn ni thng c s dng

Khi hn, cn phi chn que hn c xt n vt liu c s ca cc vn, chiu dy cc vn v v tr hn. Sau y l mt v d trnh by vt liu hn ca Tiu chun JIS.

Cc vn thp cha vt liu thp lin tc v chnh bn thn n l vt liu khng thm nc. Tuy vy, xt n tnh thi cng d dng, phi to mt khong trng nh kha ni.Chng ta bit rng, nhn chung, lng nc r r t cc kha ni s gim theo thi gian v s ng ct.Mc d vy, nu bn mun ngn nc thm ngay giai on u, cn phi c bin php ngn nc ngay kha ni. Phng php ph bin nht l dng vt liu ngn nc t trng n, gn s b ln kha ni. Rt nhiu loi vt liu ngn nc c pht trin p dng cho kha ni. V chi tit, vui lng lin h vi chng ti.

Chng ti c sn cc phng php sau y ngn nga s n mn ca cc ng thp(1) Thit k Cc ng thp c xem xt thm n mn cho php(2) p b tng ngn nga n mn(3) Trng, ph cc ng thp chng n mn C bn loi lp ph lin quan n phng php ny: dng sn ph; dng lp trng hu c; dng lp lt gc

du m; hay s dng lp ph v c.(4) Phng php bo v in ha C hai kiu bo v lin quan n phng php ny: kiu cung cp t bn ngoi mt ngun in bo v

chng n mn (phng php ngun in ngoi) hoc bng cch gn mt hp kim, chng hn nh hp kim nhm hay ma gi ln vt liu thp nh mt cc dng hi sinh (phng php m in cc dng).

Cn thit phi la chn mt phng php chng n mn ph hp nht theo iu kin thit k v thc t cng trng. bit c th hn, vui lng lin lc vi chng ti.

Hn ni (lp tm thi / vnh cu) Vt liu ngn nc

Loi gn vo Loi chy

Vt liu ngn nc c khnng trng n

hw

bp

tp

bp bp

tp

p

bp

p

PL

Hn trong nh my (LLWWW ): khu vc hn : khu vc khng hn

Hn trong nh my (, )

Trt mch sau khi hnTrt mch sau khi hn

hw

tp1

tp2

bp1

bp2

bp

p

p: khu vc hn : khu vc khng hn

Hn ngu hoc trt mchsau khi hn

Kh quyn trn mt bin

Vng nc bnC

hiu

su

Vng

Trong nc bin

Trong y bin

B mt y bin

L.W.L (Thy triu thp trung bnh)

M.H.W.L (Thy triu cao trung bnh) MSL (Mc nc bin trg bnh)

MLWL (Mc nc thp trg bnh)

H.W.L.

L.W.L.

M.L.W.L.

(A) (B) (C)

L.W.L. -1m

G.L.

Kh quyn trn mt bin

Ph v/hoc sn ph

Sn ph hocp b tng

Bo v in ha Bo v in haCho phpn mn

Vng nc bn

Vng

Trong nc bin

Trong y bin

Ph v/hoc sn ph

Phng php ni cc kn nc

H thng chng n mn

V d v ng dng vt liu ngn nc

V d v vic gn vt liu ngn nc va kht

Vt liu Ccvn thp

Hn bng tay Hn h quang khng c kh bo v

Hng dn Mc thp Hng dn Mc thp

SY295SYW295

Que hn in loi bc t hydro cho mc thp 490N/mm2

JIS Z3212 D5016

Que hn tr dung li thuc cho mc thp 490N/mm2

JIS Z3313 YFW-S50DX

SY390SYW390

Que hn in loi bc t hydro cho mc thp 570N/mm2

JIS Z3212 D5816

Vt liu Ccvn thp

Hn h quang c bo v kh CO2

Hng dn Mc thp Hng dn Mc thp

SY295SYW295

Que hn in li c cho mc thp 490N/mm2

JIS Z3312 YGW11


JIS Z3313 YFW-C50DX

SY390SYW390

Que hn in li c cho mc thp 570N/mm2

JIS Z3312 YGW12


JIS Z3313 YFW-C60FX

V d v s phn loi n mn i vi cng trnh cng v phng php ng dng bo v n mn

iu kin n mn trong khu vc bin

Tng quanCc sn phm

Cc loi ph kin

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