KH Tinh Lun Mong Coc

7/25/2019 KH Tinh Lun Mong Coc

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TNHLN MNG CC

THEO TIU CHUN TCXD 205:1998, TCVN 9362:2012

I CC: PC-66 Cc: Vung

Ti trng tiu chun ln ct mt i:

Ntc

= 9100.9 TChiu cao i h= 2.5 m

su y i: 5.9 m

su mi cc: 36 m

Slng cc: 94

Kch thc nhm cc trong i:

a = 12.7 m

(Phng moment)b = 20.9 m

L = 30.1 m

Ranh gii ca mng quy c xc nh theo:A = a + 2L.tan(tb/4)

B = b + 2L.tan(tb/4)

L.tan(tb/4) ly khng ln hn 2d khi di mi cc c lp

st bi vi chsst IL> 0,6.

d - kch thc cnh cc, d = 0.45 m

khong cch tmp cc n mp i: 0.15 m

tb- gc ma st trong trung bnh cc lp t

trong phm vi chiu di cc

Tra cht. HKhoan: HK2

Lp t Tn loi t Dy (m) w

T/m3IL (o)

Eo

kG/cm2li(m)

1 t lp 0.4 1.8

2 St pha, do cng 2.6 1.91 16.08 126.9 2.6

3 St pha, do chy 3.7 1.71 8.00 50.2 0.8

4 Ct ht nh, km cht 7.8 1.85 30.00 100 7.8

5 Ct ht nh, cht va 40.5 1.92 32.00 140 21.5

6 Cui si, rt cht 9.1 2 35.00 500 0

Suy ra: tb= 32.23o

A = 21.22 m

B = 29.42 m

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Xc nh trng lng khi mng quy c: Nqu= N1+ N2- N3+ N4= 42397 T

Trng lng trong phm vi ty i trln: N1= A.B.h.(tb= 2T/m3) = 3122 T

Trng lng bn thn cc: N2= 1713.15 T

Trng lng trt bcc thay th: N3= 1181.01 T

Trng lng cc lp t trong phm vi cc: N4= A.B.ili= 38743 T

Ti trng tiu chun vtm y mng quy c: N = Ntc

+ Nqu= 51498 Tp lc tiu chun ln y mng quy c: 82.5 T/m2

ng sut do p lc bn thn t y mng quy c: bt= ili= 62.0 T/m2

ng sut gy ln ti y mng quy c: 20.4 T/m2

Tnh ln theo phng php cng ln cc lp phn t:

Chia nn t di y mng quy c thnh cc lp phn tc chiu dy

khng ln hn A/5 = 4.24 m

Trong mi lp phn tthi tnh ln theo cng thc sau:

- Hsphthuc vo hskhng nhng ca lp t. Quy phm cho php ly = 0,8Eoi- Module bin dn ca lp t thi

ng sut gy ln ti su z

ng sut bn thn cc lp t ti chiu su z:

su di y Chiu dy su Lp t Ko Eoi Si

mng quy c, m hi, m thc, m T/m2 T/m2 kG/cm2 mm

0 4.24 36.00 5 1 62.0 20.4 140 50

4.24 4.24 40.24 5 0.971 70.2 19.8 140 48

8.49 4.24 44.49 5 0.847 78.3 17.3 140 42

12.73 4.24 48.73 5 0.680 86.5 13.9 140 34

16.98 2.02 52.98 5 0.530 94.6 10.8 140 12

19.00 4.24 55.00 6 0.469 98.5 9.6 500 7

23.24 4.24 59.24 6 0.366 107.0 7.5 500 5

27.49 0.61 63.49 6 0.290 115.5 5.9 500 1

28.10 -64.10 64.10 0 0.280 116.7 5.7 0 #DIV/0!

-36.00 #N/A 0.00 #N/A -0.190 116.7 -3.9 #N/A #N/A

#N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A



Dng tnh ln ti im c 5 su 48.73 m

ln dbo l : S = Si= 173 mm

.

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Tnh ln theo phng php lp bin dng tuyn tnh c chiu dy hu hn

Vi mng b cc c kch thc ln hn 10x10m.ln ca mng xc nh theo TCVN 9362:2012:

trong :b l chiu rng mng: b = 13.45 m

p l p lc trung bnh ln nn ti mt phng y i p = 37.5 T/m2

M l hsiu chnh, phthuc m = 2H/b M = 0.75

n l slp phn chia theo tnh chu nn trong phm vi lp n hi H

k l hsxc nh theo bng C.3 ca TCVN 9362:2012 i vi lp thi phthuc hnh dng y mn

tscc cnh mng chnht n=l/b v ts2z/b

Eil module bin dng ca lp thi

Httl chiu dy tnh ton ca lp bin dng tuyn tnh: H = Ho+ t.b

Trng hp Ho(m) t ng vi trng hp t nn 21 t nn loi st 9 0.15 Htt= 7.345 m

2 t nn loi ct 6 0.1 n=l/b = 1.60967

3 Nn gm cst, ct 7.5 0.125 m =2H/b = 6.44535

Vi mng cc, tng chiu dy tnh ton ca lp ln mt lng bng su hcc vi module bin dng

ca lp m cc xuyn qua ly bng module n hi vt liu cc: 2.9E+06 T/m2

H = 43.345 m

Z su Lp t Ei 2z/b Ki Ki- Ki-1

m thc, m T/m2

0.8 6.7 3 2900000 0.118959 0.0297 0.02974

30.1 36 4 2900000 4.475836 0.7688 0.73908

43.345 49.245 5 1400 6.445353 0.8529 0.08407

43.345 49.245 5 1400 6.445353 0.8529 0

S = 23 mm

ln ly theo phng php 2: S = 23 mm

cng cc: 5700 T/m

..

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TNHLN MNG CC




Ntc

= 1165.2 TChiu cao i h= 2 m

su y i: 5.4 m

su mi cc: 36 m

Slng cc: 10


a = 2.5 m


L = 30.6 m











T/m3IL (o)

Eo

kG/cm2li(m)

1 t lp 0.4 1.8

2 St pha, do cng 2.6 1.91 16.08 126.9 2.6

3 St pha, do chy 3.7 1.71 8.00 50.2 1.3

4 Ct ht nh, km cht 7.8 1.85 30.00 100 7.8

5 Ct ht nh, cht va 40.5 1.92 32.00 140 21.5

6 Cui si, rt cht 9.1 2 35.00 500 0

Suy ra: tb= 31.84o

A = 11.06 m

B = 13.06 m

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0 2.21 36.00 5 1 62.9 12.5 140 16

2.21 2.21 38.21 5 0.967 67.1 12.0 140 15

4.42 2.21 40.42 5 0.828 71.4 10.3 140 13

6.63 2.21 42.63 5 0.648 75.6 8.1 140 10

8.85 2.21 44.85 5 0.492 79.9 6.1 140 8

11.06 2.21 47.06 5 0.375 84.1 4.7 140 6

13.27 2.21 49.27 5 0.290 88.4 3.6 140 5

15.48 2.21 51.48 5 0.229 92.6 2.9 140 4

17.69 1.31 53.69 5 0.184 96.9 2.3 140 2

19.00 2.21 55.00 6 0.163 99.4 2.0 500 1

21.21 2.21 57.21 6 0.135 103.8 1.7 500 1

23.42 2.21 59.42 6 0.113 108.2 1.4 500 0

25.63 2.21 61.63 6 0.096 112.6 1.2 500 0



.

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M l hsiu chnh, phthuc m = 2H/b M = #REF!







2 t nn loi ct 6 0.1 n=l/b = 1.61538

3 Nn gm cst, ct 7.5 0.125 m =2H/b = 26.0462



H = 42.325 m


m thc, m T/m2

1.3 6.7 3 2900000 0.8 0.2 0.2

30.6 36 4 2900000 18.83077 0.8538 0.65377

42.325 47.725 5 1400 26.04615 0 -0.8538

42.325 47.725 5 1400 26.04615 0 0

S = #REF! mm


cng cc: 11080 T/m

..

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TNHLN MNG CC




Ntc


su y i: 5.4 m

su mi cc: 36 m

Slng cc: 10


a = 2.5 m


L = 30.6 m











T/m3IL (o)

Eo

kG/cm2li(m)

1 t lp 0.4 1.8

2 St pha, do cng 2.6 1.91 16.08 126.9 2.6

3 St pha, do chy 3.7 1.71 8.00 50.2 1.3

4 Ct ht nh, km cht 7.8 1.85 30.00 100 7.8

5 Ct ht nh, cht va 40.5 1.92 32.00 140 21.5

6 Cui si, rt cht 9.1 2 35.00 500 0

Suy ra: tb= 31.84o

A = 11.06 m

B = 13.06 m

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0 2.21 36.00 5 1 62.9 12.2 140 15

2.21 2.21 38.21 5 0.967 67.1 11.8 140 15

4.42 2.21 40.42 5 0.828 71.4 10.1 140 13

6.63 2.21 42.63 5 0.648 75.6 7.9 140 10

8.85 2.21 44.85 5 0.492 79.9 6.0 140 8

11.06 2.21 47.06 5 0.375 84.1 4.6 140 6

13.27 2.21 49.27 5 0.290 88.4 3.5 140 4

15.48 2.21 51.48 5 0.229 92.6 2.8 140 4

17.69 1.31 53.69 5 0.184 96.9 2.2 140 2

19.00 2.21 55.00 6 0.163 99.4 2.0 500 1

21.21 2.21 57.21 6 0.135 103.8 1.6 500 1

23.42 2.21 59.42 6 0.113 108.2 1.4 500 0

25.63 2.21 61.63 6 0.096 112.6 1.2 500 0



.

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2 t nn loi ct 6 0.1 n=l/b = 1.61538

3 Nn gm cst, ct 7.5 0.125 m =2H/b = 26.0462



H = 42.325 m


m thc, m T/m2

1.3 6.7 3 2900000 0.8 0.2 0.2

30.6 36 4 2900000 18.83077 0.8538 0.65377

42.325 47.725 5 1400 26.04615 0 -0.8538

42.325 47.725 5 1400 26.04615 0 0

S = #REF! mm


cng cc: 11070 T/m

..

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TNHLN MNG CC




Ntc


su y i: 5.4 m

su mi cc: 36 m

Slng cc: 13


a = 5.95 m


L = 30.6 m











T/m3IL (o)

Eo

kG/cm2li(m)

1 t lp 0.4 1.8

2 St pha, do cng 2.6 1.91 16.08 126.9 2.6

3 St pha, do chy 3.7 1.71 8.00 50.2 1.3

4 Ct ht nh, km cht 7.8 1.85 30.00 100 7.8

5 Ct ht nh, cht va 40.5 1.92 32.00 140 21.5

6 Cui si, rt cht 9.1 2 35.00 500 0

Suy ra: tb= 31.84o

A = 14.51 m

B = 14.51 m

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0 2.90 36.00 5 1 62.9 12.1 140 20

2.90 2.90 38.90 5 0.960 68.5 11.6 140 19

5.80 2.90 41.80 5 0.800 74.0 9.7 140 16

8.70 2.90 44.70 5 0.606 79.6 7.3 140 12

11.61 2.90 47.61 5 0.449 85.2 5.4 140 9

14.51 2.90 50.51 5 0.336 90.8 4.1 140 7

17.41 1.59 53.41 5 0.257 96.3 3.1 140 3

19.00 2.90 55.00 6 0.224 99.4 2.7 500 1

21.90 2.90 57.90 6 0.177 105.2 2.1 500 1

24.80 2.90 60.80 6 0.143 111.0 1.7 500 1

27.70 0.40 63.70 6 0.117 116.8 1.4 500 0

28.10 -64.10 64.10 0 0.115 117.6 1.4 0 #DIV/0!

-36.00 #N/A 0.00 #N/A -0.073 117.6 -0.9 #N/A #N/A



.

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2 t nn loi ct 6 0.1 n=l/b = 1

3 Nn gm cst, ct 7.5 0.125 m =2H/b = 12.7373



H = 42.67 m


m thc, m T/m2

1.3 6.7 3 2900000 0.38806 0.097 0.09701

30.6 36 4 2900000 9.134328 0.709 0.61199

42.67 48.07 5 1400 12.73731 0.709 0

42.67 48.07 5 1400 12.73731 0.709 0

S = #REF! mm


cng cc: 9490 T/m

..

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TNHLN MNG CC




Ntc


su y i: 5.4 m

su mi cc: 36 m

Slng cc: 9


a = 3.2 m


L = 30.6 m











T/m3IL (o)

Eo

kG/cm2li(m)

1 t lp 0.4 1.8

2 St pha, do cng 2.6 1.91 16.08 126.9 2.6

3 St pha, do chy 3.7 1.71 8.00 50.2 1.3

4 Ct ht nh, km cht 7.8 1.85 30.00 100 7.8

5 Ct ht nh, cht va 40.5 1.92 32.00 140 21.5

6 Cui si, rt cht 9.1 2 35.00 500 0

Suy ra: tb= 31.84o

A = 11.76 m

B = 11.76 m

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0 2.35 36.00 5 1 62.9 10.9 140 15

2.35 2.35 38.35 5 0.960 67.4 10.5 140 14

4.70 2.35 40.70 5 0.800 71.9 8.7 140 12

7.05 2.35 43.05 5 0.606 76.4 6.6 140 9

9.41 2.35 45.41 5 0.449 81.0 4.9 140 7

11.76 2.35 47.76 5 0.336 85.5 3.7 140 5

14.11 2.35 50.11 5 0.257 90.0 2.8 140 4

16.46 2.35 52.46 5 0.201 94.5 2.2 140 3

18.81 0.19 54.81 5 0.160 99.0 1.7 140 0

19.00 2.35 55.00 6 0.158 99.4 1.7 500 1

21.35 2.35 57.35 6 0.128 104.1 1.4 500 1

23.70 2.35 59.70 6 0.107 108.8 1.2 500 0

26.05 2.05 62.05 6 0.090 113.5 1.0 500 0



.

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2 t nn loi ct 6 0.1 n=l/b = 1

3 Nn gm cst, ct 7.5 0.125 m =2H/b = 21.4658



H = 42.395 m


m thc, m T/m2

1.3 6.7 3 2900000 0.658228 0.1646 0.16456

30.6 36 4 2900000 15.49367 0.709 0.54444

42.395 47.795 5 1400 21.46582 0 -0.709

42.395 47.795 5 1400 21.46582 0 0

S = #REF! mm


cng cc: 11060 T/m

..

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TNHLN MNG CC




Ntc


su y i: 5.4 m

su mi cc: 36 m

Slng cc: 9


a = 3.2 m


L = 30.6 m











T/m3IL (o)

Eo

kG/cm2li(m)

1 t lp 0.4 1.8

2 St pha, do cng 2.6 1.91 16.08 126.9 2.6

3 St pha, do chy 3.7 1.71 8.00 50.2 1.3

4 Ct ht nh, km cht 7.8 1.85 30.00 100 7.8

5 Ct ht nh, cht va 40.5 1.92 32.00 140 21.5

6 Cui si, rt cht 9.1 2 35.00 500 0

Suy ra: tb= 31.84o

A = 11.76 m

B = 11.76 m

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0 2.35 36.00 5 1 62.9 12.3 140 17

2.35 2.35 38.35 5 0.960 67.4 11.8 140 16

4.70 2.35 40.70 5 0.800 71.9 9.9 140 13

7.05 2.35 43.05 5 0.606 76.4 7.5 140 10

9.41 2.35 45.41 5 0.449 81.0 5.5 140 7

11.76 2.35 47.76 5 0.336 85.5 4.1 140 6

14.11 2.35 50.11 5 0.257 90.0 3.2 140 4

16.46 2.35 52.46 5 0.201 94.5 2.5 140 3

18.81 0.19 54.81 5 0.160 99.0 2.0 140 0

19.00 2.35 55.00 6 0.158 99.4 1.9 500 1

21.35 2.35 57.35 6 0.128 104.1 1.6 500 1

23.70 2.35 59.70 6 0.107 108.8 1.3 500 0

26.05 2.05 62.05 6 0.090 113.5 1.1 500 0



.

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2 t nn loi ct 6 0.1 n=l/b = 1

3 Nn gm cst, ct 7.5 0.125 m =2H/b = 21.4658



H = 42.395 m


m thc, m T/m2

1.3 6.7 3 2900000 0.658228 0.1646 0.16456

30.6 36 4 2900000 15.49367 0.709 0.54444

42.395 47.795 5 1400 21.46582 0 -0.709

42.395 47.795 5 1400 21.46582 0 0

S = #REF! mm


cng cc: 11100 T/m

..

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TNHLN MNG CC




Ntc


su y i: 5.4 m

su mi cc: 36 m

Slng cc: 12


a = 5.6 m


L = 30.6 m











T/m3IL (o)

Eo

kG/cm2li(m)

1 t lp 0.4 1.8

2 St pha, do cng 2.6 1.91 16.08 126.9 2.6

3 St pha, do chy 3.7 1.71 8.00 50.2 1.3

4 Ct ht nh, km cht 7.8 1.85 30.00 100 7.8

5 Ct ht nh, cht va 40.5 1.92 32.00 140 21.5

6 Cui si, rt cht 9.1 2 35.00 500 0

Suy ra: tb= 31.84o

A = 14.16 m

B = 14.51 m

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0 2.83 36.00 5 1 62.9 10.2 140 16

2.83 2.83 38.83 5 0.962 68.3 9.8 140 16

5.66 2.83 41.66 5 0.804 73.8 8.2 140 13

8.49 2.83 44.49 5 0.613 79.2 6.2 140 10

11.33 2.83 47.33 5 0.456 84.6 4.6 140 7

14.16 2.83 50.16 5 0.342 90.1 3.5 140 6

16.99 2.01 52.99 5 0.262 95.5 2.7 140 3

19.00 2.83 55.00 6 0.219 99.4 2.2 500 1

21.83 2.83 57.83 6 0.174 105.0 1.8 500 1

24.66 2.83 60.66 6 0.141 110.7 1.4 500 1

27.49 0.61 63.49 6 0.116 116.4 1.2 500 0

28.10 -64.10 64.10 0 0.112 117.6 1.1 0 #DIV/0!

-36.00 #N/A 0.00 #N/A -0.071 117.6 -0.7 #N/A #N/A



.

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2 t nn loi ct 6 0.1 n=l/b = 1.05512

3 Nn gm cst, ct 7.5 0.125 m =2H/b = 13.4283



H = 42.635 m


m thc, m T/m2

1.3 6.7 3 2900000 0.409449 0.1024 0.10236

30.6 36 4 2900000 9.637795 0.723 0.62064

42.635 48.035 5 1400 13.42835 0.723 0

42.635 48.035 5 1400 13.42835 0.723 0

S = #REF! mm


cng cc: 10240 T/m

..

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