Hnh 1: Nguyn l cng ngh

Hnh 2: Cu Plougastel tng u tin v thi cng hng nm 1928,n 1944 b ph hu

Hnh 3: Cu Marne-Thi cng t u tin dng neo c nh vo m

Hnh 4: Cu Beaucaire dng cp thay cho ct thp thanh

Hnh 5: Cu Bettingen vi 3 nhp 85+140+85m, vt nhp ln hn

T thp nin 60 th k 20 tr i, cng ngh ny c s dngrng ri trn th gii.

Hnh 6: Cu Stolmasunset c nhp chnh 301m ln nht th gii hin nay

Hnh 7: Cu Raftsundet c nhp chnh 298m ln th 2 th gii

Hnh 8: Cu ny c nhp chnh 260m ln th 6 th gii. Chiu di cu 1627m

Hnh 9: Cu Thames Gateway c hnh dng p

- Vit Nam t nhng nm 70 Hi Phng xy dng 3 cu khungdm: cu Ro, cu Nim, cu An Dng bng cng ngh lp hngnhng do khng c kinh nghim thit k nn xy ra tai nn nghimtrng l cu Ro b sp, cu Nim phi sa cha li bng cch thay cpcng ngoi.-Nhng nm sau ny c bit sau i mi, hng lot cu c ut xy dng theo cng ngh ny v lm ch c n.

Hnh 10: Cu Ph Lng xy dng nm 1995 theo cng ngh ca Nht

Hnh 11: Cu Sng Gianh c nhp iu kt cu nhp n hon m37.4+58.0+77.8+ 3*120+77.8+ 58.0+ 37.4, cu c kt cu hp c vch

nghing u tin v c xy dng theo cng ngh ca Php

Hnh 12: Cu Nhn Hi

425

3

0

0

8

0

0

425300

T3 T4 T5 T6

425

3

0

0

8

0

0

425

Hnh 13: c cc on i xng qua tr

425

3

0

0

8

0

0

425 425

3

0

0

300 425

8

0

0

T3 T4 T5 T6

Hnh 14: Hp long nhp bin

425

3

0

0

300 425

8

0

0

T4T3 T5 T6

425

3

0

0

8

0

0

425

Hnh 15: Hp long nhp gia

-Trnh t:+Di chuyn xe c, vn khun ra v tr mi. Trong qu trnh ny

phi m bo di chuyn ng v tr, iu chnh vn khun ng cao thit k, iu chnh tim vn khun ng tim cu nht l khi cunm trn ng cong. Nu tit din hp c sn bn xin th viciu chnh vn khun y v vn khun bn phc tp.

+Lp t cc li ct thp v cc ng rnh. Ct thp cc t phic hn vi nhau. Cc ng rnh bng tn phi b tr ng v tr vbo m cc ch ni phi st sao khng lt va vo trong ngrnh.

+ btng t dm v bo dng m bo pht trin cng .Thng chut ng rnh, lung cc b ct thp vo trong ng. Sau tin hnh cng ct thp v bm va.

+Tho d vn khun, y xe c v pha trc thi cng on tiptheo.

-Thi gian thi cng mi t thng thng l 7-10 ngy. Thi gian thicng mi t nhanh hay chm l nh gi trinh pht trin cngngh ca n v thi cng.

Cng vic Tin 7 ngy Tin 10 ngy

-Di chuyn gin gio, lp tvn khun

1 1.5

-Lp t ct thp 2 3

- btng 1 1

-Bo dng btng 2 3

Cng ct thp v hon thin 1 1.5

- i vi cng ngh hng, c th chia kt cu nhp thnh 4 phn c bn:

425

3

0

0

300 425

8

0

0

T4T3 T5 T6

C

425

3

0

0

8

0

0

425

D B A B D B A B D C

+ Phn A: Phn c trn nh tr.+ Phn B: Phn c i xng qua tr bng xe c.+ Phn C: Phn c trn gio.+ Phn D: Khi hp long.

Thanh ngang

Thanh cho

Lin kt chtTr

Bulng PC32

Hnh 16: M rng nh tr

Hnh 17: Thi cng t Ko

Khi k

I I

Khi k Gi chnh

1145 1400 1900 1900 1400 1145

I - I

Hnh 18: Lin kt dm vi tr bng cc thanh thp cng cao

Hnh 19: Dng 1 hoc 2 tr tm

Hnh 20: Dng tr bng 2 tng mng

Hnh 21: Khi k tm trn nh tr v sau khi tho b

Tim gi cu

Chi tit B

N3 DL 32

Chi tit C

N2 DL 32Chi tit A

N1 DL 32

Chi tit A

Lui thp L1

Lui thp L2

ng gen N10 84/89

Lui thp L1

ng gen N10 69/72

Hnh 22: Chi tit neo thp vo nh tr

Hnh 23: Cc thanh thp PC cng cao

Hnh 24: Xe c

MAINRAILS

HYDRAULICCYLINDERS

PULL DOWN CYLINDERS

LAUNCHING CYLINDERS

MAIN CYLINDERS

FRONT & REARBOOGIES

MAINRAILS

HYDRAULICCYLINDERS

FRONT & REARBOOGIES

MAINRAILS

HYDRAULICCYLINDERS

MAINFRAMEWORK

FRONT & REARBOOGIES

MAINRAILS

HYDRAULICCYLINDERS

MAINFRAMEWORK

FRONT & REARFRAMEWORK

BOTTOMFRAMEWORK

CROSSARMS

INTERNALFRAMEWORK

FRONT & REARBOOGIES

MAINRAILS

HYDRAULICCYLINDERS

MAINFRAMEWORK

FRONT & REARFRAMEWORK

BOTTOMFRAMEWORK

CROSSARMS

INTERNALFRAMEWORK

EXTERNALFORMWORK

BOTTOMFORMWORK

INTERNALFORMWORK

FRONT & REARBOOGIES

MAINRAILS

HYDRAULICCYLINDERS

MAINFRAMEWORK

FRONT & REARFRAMEWORK

BOTTOMFRAMEWORK

CROSSARMS

ENDFORMWORK

WORKINGPLATFORMS

INTERNALFRAMEWORK

EXTERNALFORMWORK

BOTTOMFORMWORK

INTERNALFORMWORK

Hnh 25: Lp dng xe c

-Cc t tip theo c thi cng i xng qua tr t t K1 chon t cui cng ca mt tha theo chu trnh lp i lp li nhsau:

+Lp t (hoc di chuyn) v iu chnh xe c.+Lp t ct thp thng v ng ghen ca cp DL.+ v bo dng btng.+Lun v cng ko cp ng sut trc.

-Chiu di khi c c th t 3-6m. N ph thuc nng lc ca xec, chiu di ngn khi gn tr cu v chiu di ln hn khi gnkhong gia nhp.-Khi thi cng xong 1 cp t no th cng cp DL t u mtny sang u mt kia. Khi thi cng phi theo di cht ch vng, s lng b cp ti mi t t nht mi sn c 1 b ccng v neo vo cui t. Sau khi cng xong phi tin hnh bmva ngay.

Hnh 26: Thi cng trngin gio c nh

Hnh 27: Thi cng trn gin gio treo

Hnh 28: Thi cng khi hp long

d1 a l lal ll a al d2

l1 l2 l3 l4

Hnh 29: B tr s theo cng ngh c hng

Hnh 30: Cc dng bin di ca dm

( ) ncppX LXhHHh =

( )

( )

==

+==

34

123

3112

65.062.02

2175.0

LLLLL

LLLL

Hnh 31: Xc nh chiu di nhp khi chiu cao nhpbin khng thay i

( ) 12 7.065.0 LL =

Hnh 32: Xc nh chiu di nhp khi chiu cao ccnhp thay i

1300

5

6

4

500

2

2

0 4050

1510

5

5

0

325400

450 450

2

5

0

1700

5

6

0

450 400

45

3245

580300

2

8

5

850 850

8

0

0

125 375 425 75 350

2

0

1

0

0

50

a) b)

c)

d)

1080 1080

2160

5

4

0

495 1170 495

1

8

0

150 150

1800

3

6

0

650

1300

e)

f)

Hnh 33: Cc dng tit din ngang

Hnh 35: Xc nh kch thc tit din ngang

Hnh 34: Tng cng chu lc ca bn mt cu

Hnh 36: Thay i b dy bin di

xh

cpp LL

tttt 3333

=

PTS

Hnh 37: V d xc nh kch thc dm

Hnh 38

Hnh 39: Cp hng

Hnh 40: Cp nhp

Hnh 41: Cp lin tc

Hnh 42: Vu neo cp nhp

Hnh 43: Cp lin tc

Hnh 44: Cp hng chu mmen m

Hnh 45: Cp nhp chu mn dng

Hnh 46: S kt cu dm 5 nhp tnh theo cng ngh c hng cn bng

Giai on 1: c i xng qua tr

xxx

x

x

x x

x

x

x

x x

x

x

x

x

xx

x

x

x

xx

x

xxx

x x x x

xx x

x

Giai on 2: Tho d xe c

Giai on 3: Hp long nhp bin

HLvk_12

_1HL 2 vk HLvk

1_2

1_HL vk2

Giai on 4: Cng cp mmen dng nhp bin

q 12_

DC

vk HL2_1

HLvk DCq

Giai on 5: H gin gio nhp bin

O O

HLvk2_1

vk2 HL1

vk1_2 HLHL

12 vk

Giai on 6: Tho ngm tr v tho vn khun hp long nhp bin

HLvk_1_1

2 vk HL 2 HL1_

vk21_2 vk HL

Giai on 7: Hp long nhp 2 v 4

Giai on 8: Cng cp mmen dng nhp 2 v 4

O O

HLvk21_

21_

vk HL 2_1

HLvk2_1

vk HL

Giai on 9: Tho ngm tr v vn khun hp long nhp 2 v 4

Giai on 10: Hp long nhp gia

Giai on 11: Cng cp mmen dng nhp gia

HLvk2_1

2 vkHL_1

Giai on 12: Tho vn khun hp long nhp gia

q DW

Giai on 13: Thi cng cc lp mt cu

Hnh 47: S tnh ton n inh cnh hng mt tha

20.1l

g

MM

Hnh 48: S tnh n nh cnh hng theo AASHTO

50.1l

g

MM

Hnh 49

Hnh 50

Hnh 51

Thank you Thank you for for

Your Attention!Your Attention!

- i vi cng ngh hng, c th chia kt cu nhp thnh 4 phn c bn: