To hop noi luc

Ghi chó: b¶ng mµu lµ sè liÖu kh«ng ®æinh÷ng sè cã mµu lµ sè liÖu chän

§Ò bµi TÝnh to¸n khung ngang nhµ c«ng mét tÇng hai nhÞp.

NhÞp cÇu trôc

16500 16500 6000 6350

Tõ sè liÖu ®Ò bµi cã:

Sè liÖu vÒ dÇm cÇu trôc

15-30 12-30 1000 200 570

chØ tiªu cÇu trôc

B K30/5 16.5 6300 5100 2750

chän cÊu t¹o cöa m¸i

chän Hr (mm) a1 (mm) a2 (mm) a3 (mm)150 150 500 800

KÕt cÊu m¸i dÇm cÇu trôc

B íca(mm)

C.tr×nhR(mm)Lk1(mm) Lk2(mm)

Søc trôc (Q, t)

NhÞp nhµ (L,

m)

Hc (mm)

b (mm)

bc (mm)

Søc trôc (Q, t)

NhÞp CT Lk (m)

kÝch th íc cÇu trôc (mm)

Hct

1. Lùa chän kÝch th íc cña çc cÊu kiÖn

NhÞp nhµ L (mm) hgd (mm) hdd (mm) Hc (mm) b (mm)

1- hai l í p g ¹ c h l ¸ nem dµy 5c m

2- l í p bª t « ng nhÑ c ¸ c h nhiÖt dµy 12c m

3- l í p bª t « ng c hè ng t hÊm dµy 4c m

4- panen s ¦ ê n 6x1.5m, c ao 30c m

18000 2200 1300 1000 200

chiÒu cao nhµcao tr×nh ®Ønh m¸i

V (mm) D (mm) M1(mm) M2 (mm) 5200 9250 11960 14960 10550

KiÓm traa4 biªn a4 gi÷a

300 150 25.3125 21.375tho¶ m·n tho¶ m·n tho¶ m·n

cao tr×nh vai cét

cao tr×nh ®Ønh cét

Ht êng mm

lb trªn lb d íi

lµ sè liÖu chän

TÝnh to¸n khung ngang nhµ c«ng mét tÇng hai nhÞp.

Søc trôc

30/5 30/5 mÒm trung b×nh Phó yªn

120 4.2

chØ tiªu cÇu trôc

xe con G toµn bé300 28 8.2 12 42.5

chiÒu dµy m¸i t (mm)chiÒu cao cöa m¸i hcm(mm) l510 3000 750

dÇm cÇu trôcTL 1 dÇm (t)

MãccÈu

ChÕ ®élµm viÖc

§Þa ®iÓm x©y dùngQ1(T) Q2(T)

hc (mm)

träng l îng mét dÇm (t)

kÝch th íc cÇu trôc (mm)¸p lùc b¸nh xe

lªn ray (t)Träng l îng (t)

B1 Pcmax Pc

min

bc (mm) hc (mm)

570 120 4.2

11060

bÒ réng cét

Ht (mm) Hd (mm) b (mm)4050 5700 400 400 600

kÝch th íc cétchiÒu dµi cét trªn

chiÒu dµi cét d íi

chiÒu cao td cét biªn trªn

chiÒu cao td cét biªn d íi

htb (mm) hdb (mm)

Lcm (mm)6000

lv (mm) hv (mm)600 800 600 600

kÝch th íc vai cétchiÒu cao

td cét gi÷a trªn

chiÒu cao td cét

gi÷a d íi®é v ¬n

chiÒu cao mÐp

ngoµihtg (mm) hdg (mm)

cÊu t¹o m¸i

TT Çc líp m¸i ChiÒu dÇy (m)

1 Hai líp g¹ch l¸ nem kÓ c¶ v÷a lãt 0.05

2 Líp bª t«ng nhÑ çch nhiÖt 0.12

3 Líp bª t«ng chèng thÊm 0.04

4 0.3

5 Tæng céng

tÜnh t¶i TL khung CM

G1 (kG) n=1,1 G2 (kG) n=1,17260 1650

ho¹t t¶i Ho¹t t¶i m¸i n

75 1.3Giã

10550 n Wo (kG/m2) Ce19250 1.2 125 -0.1

Panen s ên, kÝch th íc 3x6m,

(nh÷ng sè cã mµu xanh lµ sè liÖu nhËp vµo, ch a kÓ dÕn hÖ sè v ît t¶i. Sè mµu ®á lµ kÕt qu¶ cña 1 phÐp tÝnh ®¬n gi¶n )Träng l îng cña KC m¸i

pmtc (kG/m2)

1800 90 1.3 117

1200 144 1.3 187.2

2500 100 1.1 110

145 1.1 159.5

Tæng céng 479 573.7

TL 1m2 çc líp m¸i NhÞp nhµ TL khung cöa kÝnhTL rayg (kG) a (m) L (m) gk (kG/m) n=1,2 gr (kG/m)

573.7 6 18 600 150

CÇu trôcy1 y2 y3 n søc trôc Q (

1 0.15 0.8 1.1 30000Giã

Ce1' Ce2 C hót C ®Èy k cét-0.308 -0.4 -0.6 0.8 0.982

khèi l îng riªng (kG/m3)

Ptc (kG/m2)

HÖ sè v ît t¶i

Ptc (kG/m2)

(nh÷ng sè cã mµu xanh lµ sè liÖu nhËp vµo, ch a kÓ dÕn hÖ sè v ît t¶i. Sè mµu ®á lµ kÕt qu¶ cña 1 phÐp tÝnh ®¬n gi¶n )b íc cét

tÜnh t¶i

Ko cã CM cã CM TT dÇm CT TT cét biªnGm (kG) Gm (kG) Gd (kG) Gct (kG)

34610 39035 5610 1782

ho¹t t¶iM¸i CÇu trôc (kG)Pm (kG) Dmax Dmin Tmax

5265 60060 17589 2252.25

TL bt dÇmGc (kG)

4200

CÇu trôcT (kG)

2100Giã

k tb1.026

KÕt qu¶ tÝnh to¸n

(nh÷ng sè cã mµu xanh lµ sè liÖu nhËp vµo, ch a kÓ dÕn hÖ sè v ît t¶i. Sè mµu ®á lµ kÕt qu¶ cña 1 phÐp tÝnh ®¬n gi¶n )

TT cét gi÷aGcd (kG) Gct (kG) Gcd (kG)

4356 2673 6204

giã (kG)Ph Pd Sh Sd

530.28 707.04 2784.236 2881.008

Ho¹t t¶I mai Ho¹t t¶i cÇu trôc

TÜnh t¶i Tr¸i Ph¶i

1 2 3 4 5 6 7 8 9 10

I - I M -32.09 -4.40 0.00 0.00N 641.75 89.92 0.00 0.00

II - II M 9.91 2.68 -100.62 19.24N 658.03 89.92 0.00 0.00

III - III M -30.64 -6.11 145.57 19.24N 714.13 89.92 546.98 0.00

IV - IV M 52.77 7.94 -54.41 24.49N 766.51 89.92 546.98 0Q 11.35 1.91 -27.20 5.95

I - I M 7.71 -13.16 13.16 0 0 0 0N 1334.90 87.75 87.75 0 0 0 0

II - II M 3.46 -5.92 5.92 173.90 20.46 -173.90 20.46N 1359.32 87.75 87.75 0 0 0 0

III - III M 3.46 -5.92 5.92 -236.34 20.46 236.34 20.46N 1471.52 87.75 87.75 546.98 0 546.98 0

IV - IVM -4.69 8.53 -8.53 109.11 20.85 -109.11 20.85N 1548.08 87.75 87.75 546.98 0 546.98 0Q -1.15 1.97 -1.97 47.00 5.62 -47.00 5.62

Tªn cét

TiÕt diÖn

Néi lùc

Dmax tr¸i

Tmax tr¸i

Dmax ph¶i

Tmax ph¶i

Cét A

Cét B

Giã Tæ hîp c¬ b¶n 1 Tæ hîp c¬ b¶n 2

11 12 13 14 15 16 17 184,5 4,6 4,6 4,5 4,6 4,6

0.00 0.00 -32.09 -36.49 -36.49 -32.09 -36.05 -36.050.00 0.00 641.75 731.67 731.67 641.75 722.68 722.68

4,11 4,9,10 4,6 4,6,11 4,9,10,12 4,6,9,10,12

5.96 -26.86 15.87 -91.97 12.59 17.69 -103.54 -103.540.00 0.00 658.03 658.03 747.95 738.96 738.96 738.96

4,9,10 4,12 4,9,10 4,9,10,11 4,6,12 4,6,9,10,11

5.96 -26.86 109.45 -57.50 109.45 100.80 -60.31 95.300.00 0.00 1179.06 714.13 1179.06 1132.57 795.06 1213.50

4,11 4,12 4,9,10 4,6,11 4,9,10,12 4,6,9,10,11

239.91 -191.48 292.68 -138.71 27.34 275.84 -179.92 252.95

0.00 0.00 766.51 766.51 1231.44 847.44 1184.95 1265.8851.93 -32.47 63.28 -21.12 -6.71 59.81 -34.13 43.55

4,6 4,5 4,5,6 4,6 4,5 4,5,6

0 0 20.87 -5.45 7.71 19.55 -4.13 7.710 0 1422.65 1422.65 1510.40 1413.88 1413.88 1492.85

4,7,8 4,9,10 4,5,6 4,6,7,8,11 4,5,9,10,12 4,5,6,7,8,11

117.33 -117.33 197.82 -190.90 3.46 263.07 -256.15 257.740 0 1359.32 1359.32 1534.82 1438.29 1438.29 1517.27

4,9,10 4,7,8 4,7,8,9,10 4,6,9,10,11 4,5,7,8,12 4,5,6,7,8,9,10,11

117.33 -117.33 221.74 -214.82 32.10 310.84 -303.92 134.840 0 1936.45 1936.45 2237.29 1968.93 1968.93 2318.66

4,11 4,12 4,7,8,9,10 4,5,7,8,11 4,6,9,10,12 4,5,6,7,8,9,10,12

350.40 -350.40 345.71 -355.09 346.16 410.09 -427.15 -346.320 0 1548.08 1548.08 1930.97 1966.52 2045.49 2395.22

31.71 -31.71 30.56 -32.86 61.81 67.64 -71.72 -36.77

0.22331533 -0.22937 0.179266 0.20854 -0.2088 -0.1445881

Tr¸i sang

Ph¶i sang

Mmax

Nt

Mmin

Nt

Nmax

Mt

Mmax

Nt

Mmin

Nt

Nmax

Mt

Çc cÆp néi lùc nguy hiÓm dïng ®Ó tÝnh cèt thÐp phÇn cét trªn cét A

M (kNm) N (kN)

1 II-16 17.69 738.96 24 132 II-17 -103.54 738.96 140 133 II-15 12.59 747.95 17 13

M (kNm) N (kN)

1 IV-13 292.68 766.51 382 202 IV-14 -179.92 1184.95 152 203 IV-18 252.95 1265.88 200 204 III-13 109.45 1179.06 0.09

Çc cÆp néi lùc nguy hiÓm dïng ®Ó tÝnh cèt thÐp phÇn cét trªn cét B

M (kNm) N (kN)

1 II-16 263.07 1438.29 183 202 II-17 -256.15 1438.29 178 203 II-18 257.74 1517.27 170 20

M (kNm) N (kN)

1 IV-14 -355.09 1548.08 229 272 IV-17 -427.15 2045.49 209 273 IV-18 -346.32 2395.22 145 27

KÝ hiÖu cÆp néi lùc

KÝ hiÖu ë b¶ng tæ

hîp

e1=M/N (mm)

ea (mm)

Çc cÆp néi lùc nguy hiÓm dïng ®Ó tÝnh cèt thÐp phÇn cét d íi cét A



e1=M/N (mm)

ea (mm)



hîp

e1=M/N (mm)

ea (mm)

Çc cÆp néi lùc nguy hiÓm dïng ®Ó tÝnh cèt thÐp phÇn cét d íi cét BKÝ hiÖu

cÆp néi lùc


hîp

e1=M/N (mm)

ea (mm)

Çc cÆp néi lùc nguy hiÓm dïng ®Ó tÝnh cèt thÐp phÇn cét trªn cét A

37 9.91 658.03153 9.91 658.0330 9.91 658.03

402 52.77 766.51172 52.77 766.51220 52.77 766.510.11 -30.64 714.13

Çc cÆp néi lùc nguy hiÓm dïng ®Ó tÝnh cèt thÐp phÇn cét trªn cét B

203 3.46 1359.32198 3.46 1359.32190 3.46 1359.32

256 -4.69 1548.08235 -4.69 1548.08171 -4.69 1548.08

e0=e1+ea (m)

Mdh (kNm) Ndh (kN)

Çc cÆp néi lùc nguy hiÓm dïng ®Ó tÝnh cèt thÐp phÇn cét d íi cét A

e0=e1+ea (m) Ml (kNm) Nl (kN)

e0=e1+ea (m)

Mdh (kNm) Ndh (kN)

Çc cÆp néi lùc nguy hiÓm dïng ®Ó tÝnh cèt thÐp phÇn cét d íi cét Be0=e1+ea

(m)Mdh (kNm) Ndh (kN)

PhÇn cét trªn

1 I-13 1.994 39.875 0.0500 0.06502 II-17 -18.015 41.130 0.4380 0.45303 II-18 -18.015 41.130 0.4380 0.4530

Vat lieu Rb(Mpa) Rbt(MPa) Eb(Mpa) Rs(MPa) Rsw (Mpa)Rsc (Mpa)11.5 0.9 27000 280 225 280

chon cap I_3

Ht(m) lo(m) b(cm) h(cm) a(cm) a'(cm)4.05 10.13 40 40 4 4

m% Is(cm4) I(cm4) Eb(Mpa) Es(Mpa) a eo/h2.6 9584.64 213333.3 27000 210000 7.777778 1.132486

ep eo'11.0288 59.18613 tinh theo nen lach tam lon

e 2.a' x As' As75.18613 8 22.428 10 18.59853 20.33771

As'=18.6 As' 19 Atb As=20.34 3 phi 25, 2 phi 20 As 21

kiÓm tra cÆp I-1a(cm) a'(cm) ho(cm) Za(cm) lo/h

4 4 36 32 25.3125

Is(cm4) I(cm4) Eb(Mpa) Es(Mpa) a eo/h10240 213333.3 27000 210000 7.777778 0.1625

ep eo'11.0288 7.833994 tinh theo nen lech tam be

e 2.a' x223.83399 8 22.428 -15.67939 TH dac biet

Ký hiÖu cÆp néi

lùc

Ký hiÖu ë b¶ng tæ

hîp

M (t.m)

N (t)

e1=M/N (m)

eo=e1+ea (m)

xR.ho

chän5F22,

xR.ho

1.730 34.610-2.453 36.392-2.453 36.392

Es(Mpa)210000 0.623 0.439

ho(cm) Za(cm) lo/h36 32 25.31 phai xet den ah cua uon doc

S h0.131875 1.132486 1.370835 0.189251 175300.24 1.306554

m1.291565 1.412341 2.703905

38.93624

As 19As' 21

S h0.131875 0.1625 1.867962 0.519048 234168.23 1.20523

Ngh e' N.e'1702400 -8 -325618

Mdh (tm)

Ndh (t)

xR aR

dmin de jl Ncr(kG)

m' mt

dmin de jl Ncr(kG)

Ht Hd H b htcét A 4050 5700 9750 400 400cét B 4050 5700 9750 400 600

M¸iGm1 Gm2 Gm

34.61 39.0348 73.64

cét Aet a M1 M2 R1 R2

0.05 0.1 1.73049 -3.46098 0.32073246 -0.376498

cét Bet M R

0.15 0.66375 0.114969

CÇu trôcGd

5.61

cét Aed M R

0.55 3.0855 0.335652

HT m¸iPm Dmax

5.265 60.06

cét APm/Gm cét A Dmax/Gd0.152125 10.70588

cét BM cét B ed M R

0.78975 1.189831 0.75 45.045 5.221431

Tmax2.25225

cét AR y My1.125171 3050 3.431773

cét B 1.198943 3050 3.656775

Giã

Pd Ph S1 S2 R1 R40.70704 0.53028 2.881008 2.784236 2.36528001 1.77396

r1 r2 r3 r40.001991 0.00503 0.00503 0.001991

Ra Rb Rc Rd0.974882 -3.511844 -3.5118436 0.383562

m1

HT ®øng CT

Mp/MG

Lùc h·m ngang

2.795534

hd Jt (cm4) Jd (cm4) t k600 213333.3 720000 0.415385 0.170222800 720000 1706666.7 0.415385 0.098218

Tªn cét TiÕt diÖn Néi lùcR 1 2 30.697230148811

Cét A

I - IMN

II - IIMN

III - IIIMN

IV - IVMNQ

Cét B

I - IMN

II - IIMN

III - IIIMN

IV - IVMNQ

Rg9.804483704946r denta

0.01404291568 -698.1801Q-0.38356176726

TÜnh t¶iTÜnh t¶i

Ho¹t t¶i m¸i Ho¹t t¶i cÇu trôc m¸i dÇm CT Tr¸i Ph¶i Dmax tr¸i Tmax tr¸i

4 5 6 7 8 9 101.73049 0 1.73049 0.26325

34.61 0 34.61 5.265-1.093292 -1.359389 -2.452681 -0.166317

34.61 0 36.3918 5.265-4.554272 1.726111 -2.828161 -0.692817

34.61 5.61 42.0018 5.265-8.528484 -0.187103 -8.715587 -1.297392

34.61 5.61 46.3578 5.2650.69723 0.335652 1.032882 0.1060660.66375 0 0.66375 -0.78975 0.78975 0 0

73.64 0 73.6446 5.265 5.265 0 00.198127 0 0.198127 -0.235738 0.235738 21.1468 2.603468

73.64 0 76.3176 5.265 5.265 0 00.198127 0 0.198127 -0.235738 0.235738 -23.8982 2.603468

73.64 11.22 87.5376 5.265 5.265 60.06 0-0.457194 0 -0.457194 0.543983 -0.543983 5.863954 -3.400383

73.64 11.22 93.7416 5.265 5.265 60.06 00.114969 0 0.114969 -0.136793 0.136793 -5.221431 -1.198943

Ho¹t t¶i cÇu trôc GiãDmax ph¶iTmax ph¶iTr¸i sang Ph¶i sang

11 12 13 140 0 0 00 0 0 0

-14.55346 2.304694 1.850341 -2.7955340 0 0 0

18.47954 2.304694 1.850341 -2.79553460.06 0 0 0

-2.003108 -4.119653 24.1014 -21.4651460.06 0 0 0

3.593447 -1.125171 5.918758 4.7866680 0 0 00 0 0 0

-21.1468 2.603468 14.22297 -14.222970 0 0 0

23.8982 2.603468 14.22297 -14.2229760.06 0 0 0

-5.863954 -3.400383 34.24048 -34.2404860.06 0 0 0

5.221431 -1.198943 -3.511844 3.511844

Ho¹t t¶i m¸i Ho¹t t¶i cÇu trôc

Tr¸i Ph¶i1 2 3 4 5 6 7

I - IM 1.73 0.26N 34.61 5.27

II - IIM -2.45 -0.17N 36.39 5.27

III - IIIM -2.83 -0.69N 42.00 5.27

IV - IVM -8.72 -1.30N 46.36 5.27Q 1.03 0.11

I - IM 0.66 -0.79 0.79 0N 73.64 -5.27 5.27 0

II - IIM 0.20 -0.24 0.24 21.15N 76.32 -5.27 5.27 0

III - IIIM 0.20 -0.24 0.24 -23.90N 87.54 -5.27 5.27 60.06

IV - IVM -0.46 0.54 -0.54 5.86N 93.74 -5.27 5.27 60.06Q 0.11 -0.14 0.14 -5.22

Tªn cét

TiÕt diÖn

Néi lùc

TÜnh t¶i Dmax tr¸i

Cét A

Cét B

Ho¹t t¶i cÇu trôc Giã

Tr¸i sang Ph¶i sang8 9 10 11 12

0 0 0 00 0 0 0

-14.55 2.30 1.85 -2.800 0 0 0

18.48 2.30 1.85 -2.8060.06 0 0 0-2.00 -4.12 24.10 -21.4760.06 0 0 03.59 -1.13 5.92 4.79

0 0 0 0 00 0 0 0 0

2.60 -21.15 2.60 14.22 -14.220 0 0 0 0

2.60 23.90 2.60 14.22 -14.220 60.06 0 0 0

-3.40 -5.86 -3.40 34.24 -34.240 60.06 0 0 0

-1.20 5.22 -1.20 -3.51 3.51

Tmax tr¸i Dmax ph¶i Tmax ph¶i

M (t.m)

1 IV-13 15.3862 IV-14 -30.1813 IV-18 -33.8864 III-13 14.8384379

cap 3 cap1 cap 3 cap 1 cÆp 2M(t) -33.886 15.386 -33.886 15.386N(t) 97.042 46.358 97.042 46.358eo(m) 0.3692 0.3519 0.3692 0.3519Mdh™ -8.7160 -8.716 -8.7160 -8.716Ndh™ 46.358 46.358 46.358 46.358

Vßng 1 CÆp 3 CÆp 1

Vat lieu 2 1.31370885Rb 11.5 Is 30284.8 19892.7049Rbt 0.9 I 720000 720000Eb 27000 eo/h 0.615333 0.61533333Rs 280 0.2425 0.2425Rsc 280 0.615333 0.61533333Rsw 225 S 0.253774 0.25377446Es 210000 1.35911 1.17722081

0.623 N cr 874578.4 732618.660.429 h 1.124807 1.06755159

a 7.777778 ep 16.0448 16.0448eo' 41.52788 37.5671405

Kich thuoc lÖch t©m lín lÖch t©m línHd(m) 5.7 e 67.52788 63.5671405lo(m) 8.55 2a' 8b(cm) 40 x (dxøng) 21.09609h(cm) 60 34.888a(cm) 4 As' 14.71354 14.7135392a'(cm) 4 0.05577267ho(cm) 56 x 0.05742127Za(cm) 52 x (pxøng) 3.21559106lo/h 14.25 As 14.71354 3.68289492

Ký hiÖu cÆp néi lùc


hîp

m gt

dminde

jlxRaR

xR.ho

am

tinh uon doc m 0.6568540.6568541.313709

m'm t

N (t) e1=M/N (m) Mdh (tm)

46.358 0.3319 0.3519 -8.716 46.35846.358 0.6510 0.6710 -8.716 46.35897.042 0.3492 0.3692 -8.716 46.358

93.0528 0.15946256 0.179463 -2.828161235 42.0018

CÆp 4

-0.088

Vßng 2CÆp 3 CÆp 1

lÖch t©m lín67.5278752 63.56714

3.68289492 23.56230.41709257 -0.0335390.59279629 -0.032995

tÝnh theo CT5.23 ho 33.1965922 -1.84771923.5622964 3.682895

eo=e1+ea (m)

Ndh (t)

0.1644151.0518881.216303

PhÇn cét trªn

1 IV-14 -30.18 46.36 0.65102 IV-17 -33.89 92.30 0.36713 IV-18 -33.89 97.04 0.3492

Vat lieu Rb(Mpa) Rbt(MPa) Eb(Mpa) Rs(MPa) Rsw (Mpa)11.5 0.9 27000 280 225

chon cap 3

Hd(m) lo(m) b(cm) h(cm) a(cm)5.70 14.25 40 60 4

m% Is(cm4) I(cm4) Eb(Mpa) Es(Mpa) a2 30284.8 720000 27000 210000 7.777778

ep eo'16.0448 53.36726 tinh theo nen lech tam lon

e 2.a' x As'79.36726 8 34.888 25 18.54034

As'=18.6 As' 19 As=20.34 5 phi 25, As 24.54

kiÓm tra cÆp2a(cm) a'(cm) ho(cm) Za(cm) lo/h

4 4 56.00 52.00 23.75

Is(cm4) I(cm4) Eb(Mpa) Es(Mpa) a29433.04 720000 27000 210000 7.777778


e 2.a' x271.62934 8 34.888 6.705609 TH dac biet

Ký hiÖu cÆp néi

lùc


hîp

M (t.m)

N (t)

e1=M/N (m)

xR.ho

chän 5F22,

xR.ho

0.6710 -8.72 46.360.3871 -8.72 46.360.3692 -8.72 46.36

Rsc (Mpa) Es(Mpa)280 210000 0.623 0.439

a'(cm) ho(cm) Za(cm) lo/h4 56 52 23.75 phai xet den ah cua uon doc

eo/h S0.61531 0.1475 0.61531 1.359103 0.253779 314851.03

As m24.95384 0.827694 1.114011 1.941705

Atb 43.49418

As 19As' 24.54

eo/h S0.645186 0.1475 0.645186 1.367393 0.247614 305757.33

Ngh e' N.e' TH dac biet 2766400 20 909972.9

eo=e1+ea (m)

Mdh (tm)

Ndh (t)

xR aR

dmin de jl Ncr(kG)

m' mt

dmin de jl Ncr(kG)

phai xet den ah cua uon doc

h1.445538

h1.178712

PhÇn cét trªn

1 II-16 31.380 81.056 0.38712 II-17 -30.984 81.056 0.38223 II-18 31.168 85.795 0.3633


Tinh cap 3

Ht(m) lo(m) b(cm) h(cm) a(cm)4.05 10.13 40 60 4

m% Is(cm4) I(cm4) Eb(Mpa) Es(Mpa) a1.3 19685.12 720000 27000 210000 7.7777778


e 2.a' x As'72.8222158 8 34.888 18.651 15.407506

As'=15.4 As' 15.2 As=15.4 As 15.2

Tinh cap 1m% Is(cm4) eo/h

1.3 19685.12 0.68 0.21625 0.63881 1.4146276

e 2.a' x As'=As75.1638129 8 34.888 17.62089 15.573381

Ký hiÖu cÆp néi lùc


hîp

M (t.m)

N (t)

e1=M/N (m)

xR.ho

chän4F22,chän4F22,

dmin de jl

xR.ho

Mdh (tm)

0.4071 0.198 76.3180.4022 0.198 76.3180.3833 0.198 76.318

Rsc (Mpa) Es(Mpa)280 210000 0.623 0.439


eo/h S0.638806 0.21625 0.638806 1.405816 0.248889 472939.66

As m15.40751 0.687835071 0.687835 1.37567

Atb 30.8150112

S h ep eo'0.248889 471601.27 1.207546 16.0448 49.16381 tinh theo nen lach tam lon

0.69524 1.390480464

eo=e1+ea (m)

Ndh (t)

xR aR

dmin de jl Ncr(kG)

m' mt

Ncr(kG)

m' mt


h1.221608

tinh theo nen lach tam lon

PhÇn cét trªn

e1=M/N (m)

1 IV-14 -34.698 93.742 0.37012 IV-17 -38.850 144.426 0.26903 IV-18 -35.558 178.894 0.1988


Tinh cap 3

Ht(m) lo(m) b(cm) h(cm) a(cm)5.70 14.25 40 80 4

m% Is(cm4) I(cm4) Eb(Mpa) Es(Mpa) a0.7 27578.88 1706667 27000 210000 7.777777778


e 2.a' x As'68.70242 8 47.348 38.89004 10.77930229

As'=15.4 As' 15.2 As=15.4 As 15.2

Tinh cap 1m% Is(cm4) eo/h

0.7 27578.88 0.50 0.20687 0.28596 1.5257178

e 2.a' x As'=As84.25307 8 47.348 20.37861 8.575486376

Ký hiÖu cÆp néi

lùc


hîp

M (t.m)

N (t)

xR.ho

chän4F22,chän4F22,

dmin de jl

xR.ho

Mdh (tm)

0.4001 -0.457 93.742s -0.457 93.742

0.2288 -0.457 93.742

Rsc (Mpa) Es(Mpa)280 210000 0.623 0.439


eo/h S0.285958 0.206875 0.285958 1.354325 0.385005 ###

As m10.7793 0.3545823122 0.354582 0.709165

Atb 21.558604583

S h ep eo'0.385005 549019.23 1.2059 21.0608 48.25307 tinh theo nen lach tam lon

0.282088 0.5641767352

eo=e1+ea (m)

Ndh (t)

xR aR

dmin de jl Ncr(kG)

m' mt

Ncr(kG)

m' mt


h1.429513

tinh theo nen lach tam lon

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