Excel Nen Mong, Mong Don( Mong Biên )

8/11/2019 Excel Nen Mong, Mong Don( Mong Bin )

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mng nng trn n

Mng D4

Bng cc lp a cht :STT Loi t dy (m) g (kN/m3) gh(kN/m3) W(%)

1 t lp 1 16.52 ct pha 7.9 18.6 26.8 28.53 St xm 4.5 18.4 26.5 37.24 ct bi 7.8 18.5 26.9 22.55 ct ht va 19 27 18.7

mc nc ngm : 1.8 (m)No(kN) Mo(kNm) Qo(kN)

ti trng tnh ton : 1129 356 68ti trng tiu chun : 981.74 309.57 59.13

h s n :

chnh lch ct t t nhin v san nn (m) 0.3

gt nhin (kN/m3): 18

chiu su chn mng (T ctTN) ho (m): 1.5chn s b b rng mng : bgt (m) 2chn chiu cao mng hm (m): 0.8

m1 = 1.1 gII (kN/m3) 18.6

m2 = 1 gII' (kN/m3) 17.2 q=A = 0.3 CII (kPa) 18.2B = 2.23 hs Ltm m : 1,1-1,7 1.3D = 4.77 k=l/b=1,1-1,3 1.2

Ktc = 1 gtrung bnh (kN/m3) 20plc tiu chun s b y mng Rtc(kN/m2) 171.059Fsb(m2) 7.11 F chn(m2) 9.24btt (m) 2.78 chn b 2.8

chn l (m) 3.4plc ti u chu n y mng Rtc(k 3.3 175.969ti trng tiu chun y mng lchtm e l 0.385458472

21.546 ti trng tiu chun y mng981.74 Ptbtc 136.12

1.15

Ntc(kN)Mtc t (kN)


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309.57 Pmaxtc 202.2859.13 Pmintc 69.97

kim tra iu kin p lc y mng :Pmaxtc < 1,2Rtc tha mnPtbtc < Rtc tha mntnh hp l chnh nhau

77.4max)/(1,2*R) 95.79

Tnh ton bn cu to mng

c p b n b tng: B15 Rb = 8500 (KN/m2)

Rbt

= 750 (KN/m2)mc thp : CII Rs = 280000 (KN/m2)* cp ni lc tnh ton :Ntt 1129 (kN)Mtt 410.4 (kNm)

*ti trng tnh ton y mng :Ptt max 194.668 (kN/m2)Ptt min 42.5173 (kN/m2)Ptt tb 118.592 (kN/m2)

* Xc nh chiu cao mng theo kt cu BTCT chu un*theo phng cnh di :

(m) b = 2.8 (m)

L = 3.4 (m)(kN/m2)

(kN/m2)ho=hm-ab 0.765

* Xc nh chiu cao mng theo kt cu BTCT chu un Lc 0.4

Pc tt = 161.776264 (Kpa) Bc 0.22*theo phng cnh di : *theo ph-ng cnh ngn Ncth 1 130.993 (kN/m) Ncth 2 = 62.26102941 (kN/m)( tre^n 1m chiu di )

Ta thy Ncth 1 > Ncth 2

Mtc(kNm)Qtc(kN )Qtc(kN )

Ptc tb/R (%)

1

2

2

1


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suy ra mt 1 nguy him hn , Lc gy trc thung lNcth=Ncth1*b = 366.7807083

2- Xc nh sc chu ti ca cc:

Sc chu ti ca cc theo vt liu lm cc

Sc chu ti ca cc theo cng t n :

a)Theo qui phm (R,fi)

Lp t li(m) Zi(m) Trng thi

1.5 2.25

1.5 3.75

1.5 5.25

1.5 6.75

Bng cng tnh ton ma st t


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1.4 8.2

1.5 9.65

1.5 11.15

1.5 12.65

1.5 14.15

1.5 15.65

1.6 17.2

1.6 18.8

1.6 20.4

Ct ht va 1.3 21.85 -

1 23

b)Theo sc chu ti ca cc theo kt qu xuyn

Ct pha 7.4 2660St xm ghi 4.5 1790

Ct bi 7.8 3690Ct ht va 2.3 8120

T ng chi u dy 22

Ap'= 0.09 P mi =chu vi U = 1.2 Pxp =

Px' =

St xm ghi

IL=0,5781Ct pha

Tng:

-

Lp t li(m) qci(kPa)

Ct bi

IL=0,608


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swucs chu ti cho php Px

c)Sc chu ti ca cc theo kt qu xuyn tiu

Lp t Lsi(m) N30Ct pha 7.4 8.8St xm ghi 4.5 7.3

Ct bi 7.8 13.5Ct ht va 2.3 21.2

anpha = 300

Pspt = 560.196

Kt lun chn PVay P chn = 560.2 kN

d= 0.3 m

Ptt 691.6049383 kN

3.Xc nh s lng cc v b tr cc trong mng:

Fsb = 2.1686516

85.878602

1214.8786

4.Kim tra iu kin lc truyn xung cc dy bin:

Tng

g tt

d,dsb tb dsbN n. .h.F

tt tt tt

0 d,dsbN N N

ttd,d.thuctN

tt

N

tt

yM


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Pc = n.fcc.

cc.Lc

Ptt

max+ PcKim tra

Kim tra dk kinh t

5.Kim tra iu kin mng theo trng thi gii hn th h

cocg

tt

max c c

P (P P ) .n1

P


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n thin nhincc v

WL(%) Wp(%) CII(kPa) jII E (kPa) gdn(kN/m3) e

31.2 24.8 18.2 14.5 8630 9.074 0.85245 25.1 22.9 12.8 6570 8.350 0.976

17.9 8440 9.488 0.78132 30580 10.078 0.687

Kch thc ct :

Lc (m) : 0.4bc (m) : 0.22 ng sut b

chn cc l

p lc gy l

I = 0,539 > 0,5 => m1 =1 ,1 beta

im12

3

25.8 4

567

8

9101112

12'13

Tt lun' 1415


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1617181920

tng lSgh (m)nh gi

*Kim tra chiu cao mng theo iu kin chc thng

abv = 0.035 (m)ho = 0.765 (m)Lc = 0.4 (m)Ptt lc = (kN/m2)Fct = (m2)

btb = 0.985 (m)lc chng chc thng: 508.63 (kN)lc gy chc thng : 366.7807 (kN)Kt lun : tha mn

a bv 0.035h mo'ng = 0.8gi s d1 0.016gi s d2 0.01

* Tnh ton ct thp :*mt ngm 1-1: *mt ngm 2-2:

Ls 1.5 (m) Bs 1.29 mPs tt 127.54245 (kN/m2=k gia s d2=ho1 = 0.757 m ho 2 = 0.74 mM1-1 = 542.72 (kN.m) M2-2 = 335.49 kN.mFa1 = 0.002845 (m2) FaII = 0.00 m2 = 28.45 ( cm2) = 17.89 cm2fa(1thanh 2.011 (m2) fa(1thanh 0.785 (m2)


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n = 14.147136 (thanh) n = 22.79513678 (thanh)chn = 15 (m) chn = 23 (thanh)Fa1 chon = 30.165 cm2 Fa2 chn= 18.055 cm2u1=As/(b.ho1) 0.1423146 % >= 0,05 u2=As/(l.ho 0.071374921 % >= 0,05

a 0.1928571 (m) a 0.15 (m)chn a= 0.17 m chn a= 150 mvs the'p d 1= 0.016 m ( phi 16) suy ra ta chon the'p d2 =10 cmgi s d2 = 0.01 m phi 10

Xe't t s M1 / l > M2 / b159.624 119.8194

suy ra the'p phi 16 t dui

S S lng Tng S cm2thp d10 0.785 1 0.785thp d12 1.131 0 0

d14 1.539 2 3.078

d16 2.011 0 0

d18 2.545 0 0

d20 3.142 3 9.426

d22 3.801 0 0

S thanh 6 13.289 cm2

.

Ct thv ct trun

sufi (kPa) mfi mfi.fi.li 0.213.65 20.474625 1 35

16.814 25.221 2 4218.783 28.1745 3 4819.908 29.862 4 53

nh ca t


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20.633 28.8862 5 5621.358 32.037 6 5821.583 32.375055 8 6221.649 32.473605 10 65

37.32 55.98 15 7238.39 57.585 20 7939.32 62.912 25 8640.28 64.448 30 9341.24 65.984 35 10081.59 mfi= 1 106.067

83.2 83.2 su725.67999 1

234568

101520

tnh: 2530qP=k.qci 35

(kPa)

- 40 66.5 492.1

- 40 44.75 201.375

- 100 36.9 287.82

0.5 100 4060 81.2 186.76

1168.055

365.4 kN1401.7 kN

1767.1 kN

qsi.li

ng

mfi= 1

mfi= 1

k i

mfi= 1

cisi

i

qq


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589.02 kN

hun SPT:

Nsi Cui(kPa) Nsi.Lsi Cui.Lci- 59.8 - 442.52

- 42.5 - 191.25

13.5 - 105.3 -

17.2 - 39.56 -

144.86 633.77

Na = 21.2

No tt = 1129 kNMo tt = 356 kN.mQo tt = 68 kNh = 1.8 mh i = 1 m

Hesovottai n 1.1

gtrung bnh 20 (kN/m3)

S lng cc so bom2

2.1686516 cckN

So coc chon n 4 cckN

F coc thuc te 3.75 m2

148.5 kN

1277.5 kN

424 kN.m x max = 1 mLtt cc = 22 m

tt

c

Nn

P

g tb d.thucten. .h.F

tt tt

0 d,d.thucteN N

tt tt

0 dM Q .h


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Ptt max = 425.375 kN.m tng n.xi2= 4 m sau di= 1.5 m

Ptt min = 213.375 kN.m MNN= 1.8 m

gama BT 25 kN/m332.967 kN

F cc = 0.09 m2

= 458.342 kN < P = 560.2 kNtha mn

0.7273 tha mn

i (iu kin bin dng)


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ng l nhp d liu

st

0.57810.608

Kim tra theo bin dng

n thn y mng sbt (kN/m2) 25.8p t p t hi=0,2b (m) 0.56

n y mng Pgl(kN/m2) 110.320.8

Z(m) 2Z/b l/b Ko sgl=Ko*Pgl sbt sgl/sbt Si (m)0 0 1.2143 1 110.32 25.8 4.28 0

0.56 0.4 1.2143 0.9686 106.86 33.559 3.18 0.005637

1.12 0.8 1.2143 0.8321 91.81 38.640 2.38 0.005157

1.68 1.2 1.2143 0.6553 72.29 43.722 1.65 0.004259

2.24 1.6 1.2143 0.4994 55.09 48.803 1.13 0.0033062.8 2 1.2143 0.3821 42.15 53.884 0.78 0.002524

3.36 2.4 1.2143 0.2966 32.73 58.966 0.56 0.001944

3.92 2.8 1.2143 0.2342 25.84 64.047 0.4 0.00152

4.48 3.2 1.2143 0.1889 20.84 69.128 0.3 0.0012125.04 3.6 1.2143 0.1546 17.06 74.209 0.23 0.0009845.6 4 1.2143 0.1284 14.16 79.291 0.18 0.00081

6.16 4.4 1.2143 0.1081 11.93 84.372 0.14 0.0006777.4 5.29 1.2143 0.0899 9.92 95.623 0.1 0

6.72 4.8 1.2143 0.0931 10.27 89.453 0.11 0.0005767.28 5.2 1.2143 0.0799 8.82 94.534 0.09 0.0006517.84 5.6 1.2143 0.0698 7.7 102.019 0.08 0.000563


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8.4 6 1.2143 0.0606 6.69 106.696 0.06 0.0004918.96 6.4 1.2143 0.0536 5.91 111.372 0.05 0.000439.52 6.8 1.2143 0.0486 5.36 116.048 0.05 0.000384

10.08 7.2 1.2143 0.0424 4.68 120.724 0.04 0.00034210.64 7.6 1.2143 0.0384 4.24 125.400 0.03 0.000304

n 0.02926 m0.08 m

ln cng trnh: tha mn

Kim tra theo bin dng

ng sut bn thn y mng sbt (kN/m2)chn cc lp t p t hi=0,2b (m)

p lc gy ln y mng Pgl(kN/m2)beta 0.8

im Z(m) l/b sgl=Ko*P1 0 1.1 110.322 0.56 1.1 106.353 1.12 1.1 89.914 1.68 1.1 69.395 2.24 1.1 52.136 2.8 1.1 39.44


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7 3.36 1.1 30.398 3.92 1.1 23.899 4.48 1.1 19.14

10 5.04 1.1 15.61

11 5.6 1.1 12.9612 6.16 1.1 10.9213 6.72 1.1 9.3214 7.28 1.1 815 7.84 1.1 7.0116 8.4 1.1 6.1217 8.96 1.1 5.4118 9.52 1.1 4.8519 10.08 1.1 4.320 10.64 1.1 3.86

tng ln 0.0263656Sgh (m) 0.08nh gi ln cng trn

Cat nho Ct bi

t st khi c st I l =0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

23 15 12 8 4 4 3 2

30 21 17 12 7 5 4 4

35 25 20 14 8 7 6 5

38 27 22 16 9 8 7 5

tha mn


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40 29 24 17 10 8 7 6

42 31 25 18 10 8 7 6

44 33 26 19 10 8 7 6

46 34 27 20 10 8 7 6

51 38 28 20 11 8 7 656 41 30 20 12 8 7 6

61 44 32 20 12 8 7 6

66 47 34 21 12 9 8 7

70 50 36 22 13 9 8 7

I l = 0.5781

8.876

13.09515.31417.31418.53319.53320.53321.53321.75222.19

22.62823.847

25.066


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Ei(kPa) 0,2.sbt8630 5.168630 6.71183

8630 7.72809

8630 8.74434

8630 9.760598630 10.77688630 11.7931

8630 12.8094

8630 13.82568630 14.84198630 15.85818630 16.874465708630 17.89066570 18.90696570 20.4039


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6570 21.33916570 22.27446570 23.20966570 24.14486570 25.0801

25.80.58

110.32

sbt sgl/sbt aoi Si (m) Ei(kPa)25.8 4.28 9.27E-05 0 8630 5.1633.559 3.17 9.27E-05 0.00562 8630 6.711838.640 2.33 9.27E-05 0.00509 8630 7.728143.722 1.59 9.27E-05 0.00413 8630 8.744348.803 1.07 9.27E-05 0.00315 8630 9.760653.884 0.73 9.27E-05 0.00238 8630 10.777


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58.966 0.52 9.27E-05 0.00181 8630 11.79364.047 0.37 9.27E-05 0.00141 8630 12.80969.128 0.28 9.27E-05 0.00112 8630 13.82674.209 0.21 9.27E-05 0.0009 8630 14.842

79.291 0.16 9.27E-05 0.00074 8630 15.858 Tt84.372 0.13 9.27E-05 0.00062 8630 16.87489.453 0.1 9.27E-05 0.00053 8630 17.89194.534 0.08 0.000122 0.00059 6570 18.907

###### 0.07 0.000122 0.00051 6570 20.404###### 0.06 0.000122 0.00045 6570 21.339###### 0.05 0.000122 0.00039 6570 22.274###### 0.04 0.000122 0.00035 6570 23.21###### 0.04 0.000122 0.00031 6570 24.145###### 0.03 0.000122 0.00028 6570 25.08

9.27E-05 8630


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H s k tnh ng sut trong nn t d-i

m=2z/b ng trn Mng ch nht vi t s c

0.8 1 1.2 1.4 1.6 1.8 2 2.4

0 1 1.000 1 1 1 1 1 1

0.4 0.949 0.960 0.968 0.972 0.974 0.975 0.976 0.976

0.8 0.756 0.800 0.830 0.848 0.859 0.866 0.87 0.875

1.2 0.547 0.606 0.652 0.682 0.703 0.717 0.727 0.74

1.6 0.39 0.449 0.496 0.532 0.558 0.578 0.593 0.612

2 0.285 0.336 0.379 0.414 0.441 0.463 0.481 0.505

2.4 0.214 0.257 0.294 0.325 0.352 0.374 0.392 0.419

2.8 0.165 0.201 0.232 0.26 0.284 0.304 0.321 0.35

3.2 0.13 0.16 0.187 0.21 0.232 0.251 0.267 0.294

3.6 0.106 0.13 0.153 0.173 0.192 0.209 0.224 0.25

4 0.087 0.108 0.127 0.145 0.161 0.176 0.19 0.214

4.4 0.073 0.091 0.107 0.122 0.137 0.15 0.163 0.185

4.8 0.062 0.077 0.092 0.105 0.118 0.13 0.141 0.161

5.2 0.053 0.066 0.079 0.091 0.102 0.112 0.123 0.141

5.6 0.046 0.058 0.069 0.079 0.089 0.09 0.108 0.124

6 0.04 0.051 0.06 0.07 0.078 0.087 0.095 0.11

6.4 0.036 0.045 0.053 0.062 0.07 0.077 0.085 0.098

6.8 0.032 0.04 0.048 0.055 0.062 0.069 0.076 0.088


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7.2 0.028 0.036 0.042 0.049 0.056 0.062 0.068 0.08

7.6 0.024 0.032 0.038 0.044 0.05 0.056 0.062 0.072

8 0.022 0.029 0.035 0.04 0.046 0.051 0.056 0.066

8.4 0.021 0.026 0.032 0.037 0.042 0.046 0.051 0.06

8.8 0.019 0.024 0.029 0.034 0.038 0.042 0.047 0.055

9.2 0.018 0.022 0.026 0.031 0.035 0.039 0.043 0.051

9.6 0.016 0.02 0.024 0.028 0.032 0.036 0.04 0.047

10 0.015 0.019 0.022 0.026 0.03 0.033 0.037 0.044

mc 1 1.2mc 2 1.4


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0.23

m mng

h l/b

2.8 3.2 1.2

1 1 1

0.977 0.977 0.9680.878 0.879 0.830.746 0.749 0.652

0.623 0.63 0.496

0.52 0.521 0.379

0.437 0.449 0.2940.369 0.383 0.2320.314 0.329 0.187

0.27 0.285 0.153

0.233 0.248 0.1270.203 0.218 0.1070.178 0.192 0.0920.157 0.17 0.0790.139 0.152 0.0690.124 0.136 0.060.111 0.122 0.053

0.1 0.11 0.048


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0.09 0.1 0.0420.082 0.091 0.0380.075 0.084 0.0350.069 0.077 0.0320.063 0.07 0.0290.058 0.065 0.0260.054 0.06 0.0240.05 0.056 0.022


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mng nng trn nn m ct

su chn mng : 2 (m)

K1 = 0.05

K2 = 0.15

Ro 400 (kPa)

Xc nh s b kch thc y mng

chn h: 1.2 (m)bgt 2 (m)


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cp bn Rnn (KN/m2) R ko(kN/m2)B12.5 7500 660B15 8500 750B20 11500 900B25 14500 1050B30 17000 1200B35 19500 1300B40 22000 1400B45 25000 1450B50 27500 1550B55 30000 1600B60 33000 1650

Loi thp Ra(KN/m2) Raw(KN/m2) Ea(KN/m2)AI 210000 168000 21,000,000AII 280000 224000 21,000,000AIII 360000 288000 21,000,000


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gii hn chy(KN/m2)240000300000400000


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Excel Nen Mong, Mong Don( Mong Biên )