san 2 phuong-pptra bang

TÝNH TO¸N SµN S¦ên cã b¶n kª 4 c¹nh

I-Th«ng sè tÝnh to¸n0.865 chän s¬ ®å sè 1

8 Bªt«ng # 250

9 . Rn(kg/cm2)= 110

hb(m)= 0.2 ThÐp nhãm CII

Ф Ø10 Rk(kg/cm2)= 2600 ¤ sµn: s¶nh phßng lµm viÖc a(cm): 2

II-KÕT QU¶ TÝNH TO¸N

NhÞp c¹nh ng¾n 1.2269 2.7475 Ø10 @200 3.920

NhÞp c¹nh dµi 0.9685 2.3695 Ø10 @200 3.920

Gèi c¹nh ng¾n 2.8369 6.5221 Ø10 @120 6.540

Gèi c¹nh dµi 2.2452 5.5900 Ø10 @120 6.540

_

II-BiÓu diÔn cÊu t¹o Ld=9m

Ln=

8m

Ф[email protected]

Ф1

0@

200

Ф1

0@

120

Ф10@120

Eb 265000 J1 66666.6667

q(T/m2)=

Lt1(m)=

Lt2(m)=

GI¸ TRÞVÞ TRÝ

MT.m

Facm2

Bè trÝ thÐp

Fachäncm2

S¥ § å 1

S§ 2 S§ 7

S§ 6

S§ 5

S§ 4

S§ 3

S§ 11

S§ 10

S§ 9

S§ 8

c¸ c d¹ ng s¬ ®å t Ýnh cu¶ § AN SµN § ¥N LµM VIÖC 2 PH¦ ¥NG

tÝnh to¸n ®an sµn ®¬n lµm viÖc hai ph ¬ngtÝnh to¸n ®an sµn ®¬n lµm viÖc hai ph ¬ng

S§ 2

S§ 3

S§ 4

S§ 5

S§ 6

S§ 7

S§ 8

S§ 9

S§ 10

S§ 11

c¸ c d¹ ng s¬ ®å t Ýnh cu¶ § AN SµN § ¥N LµM VIÖC 2 PH¦ ¥NG

S¥ § å 1

Theo tµi liÖu " Sæ tay thùc hµnh KÕt cÊu c«ng tr×nh" cña t¸c gi¶ Vò M¹nh Hïng

ta cã c«ng thøc vµ b¶ng tra ®Ó thiÕt kÕ cÊu kiÖn BTCT ®èi víi ®an sµn ®¬n lµm

TÝnh cèt thÐp chÞu lùc cho b¶n theo çc gi¸ trÞ M«men ®· tÝnh ë trªn

*) TÝnh to¸n cô thÓ cho mét sè « sµn ®iÓn h×nh

1) ¤ sµn s¶nh phßng lµm viÖc9

=1.1258

q= 0.865

P= 62.28T

0.0197

0.01555

0.04555

0.03605M« men t¹i çc nhÞp vµ gèi & chän çch bè trÝ thÐp

1.226916 (T.m) 2.75

0.968454 (T.m) 2.37

2.836854 (T.m) 6.52

*) TÝnh to¸n ®an sµn ®¬n lµm viÖc 2 ph ¬ng

viÖc 2 ph ¬ng( øng víi s¬ ®å 9 b¶n kª 4 c¹nh

M«men ë nhÞp theo ph ¬ng ng¾n

M«men ë nhÞp theo ph ¬ng dµi

M« men ë gèi theo ph ¬ng ng¾n

M«men ë gèi theo ph ¬ng dµiÇc hÖ sè m91,m92,k91,k92 tra theo b¶ng

P=(g+p)l1.l2

(kg/m2)

q.l1.l2=Tra b¶ng ® îc çc hÖ sè nh sau

m91=

m92=

k91=

k92=

Fan= cm2

Fad= cm2

Fgn= cm2

91 91

92 92

91 91

91 92

.

.

.

.

M m P

M m P

M k P

M k P

d

n

l

l

91 91.M m P

92 91.M m P

91 91.M k P

20

0

0,5.(1 1 2. )

. .

n

aa

MA

R bh

A

MF

R h

2.245194 (T.m) 5.59

So s¸nh kÕt qu¶ tÝnh to¸n thÐp cña ®¬n vÞ thiÕt kÕ :

0.504 5.5

0.2 5.5

1.111 5.5

0.442 4.71

Þ thõa nhiÒu.

2) ¤ sµn s¶nh lín

5.4 =1.1254.8

q= 0.865

P= 22.42T

0.0197

0.0158

0.0456


0.4417 (T.m) 1.567

0.3486 (T.m) 1.223

1.0213 (T.m) 3.695

0.8083 (T.m) 3.394So s¸nh kÕt qu¶ tÝnh to¸n thÐp cña ®¬n vÞ thiÕt kÕ:

2.17 5.5

1.64 5.5

4.98 5.5

3.79 4.71

Fgd= cm2

L îng thÐp tÝnh to¸n L îng thÐp bè trÝ

Fan= cm2 Fan= cm2

Fad= cm2 Fad= cm2

Fgn= cm2 Fgn= cm2

Fgd= cm2 Fgd= cm2

KÕt qu¶ tÝnh to¸n lµ t ¬ng tù vµ c¸ch bè trÝ thÐp t¹i nhÞp lµ

(kg/m2)


m91=

m92=

k91=

k92=

Fan= cm2

Fad= cm2

Fgn= cm2

Fgd= cm2


Fan= cm2 Fan= cm2

Fad= cm2 Fad= cm2

Fgn= cm2 Fgn= cm2

Fgd= cm2 Fgd= cm2

91 91.M k P

91 91.M k P

d

n

l

l

91 91.M m P

92 92.M m P

91 91.M k P

92 92.M k P

Þ thõa nhiÒu ë phÇn nhÞp

3) ¤ sµn phßng lµm viÖc 3,6 x5,4m5.4

=1.53.6

q= 0.69

P= 13.41T

0.02080.0093

0.0464


0.279 (T.m) 1.365

0.1247 (T.m) 0.747

0.6224 (T.m) 3.113


1.84 4.71

0.88 4.71

4.05 5.5

1.84 4.71Þ

4) ¤ sµn phßng lµm viÖc 3,3 x 5,1m5.1

=1.5453.3

q= 0.69

P= 11.61T

0.0206

0.0087

KÕt qu¶ tÝnh to¸n lín vµ c¸ch bè trÝ cèt thÐp lµ

(kg/m2)


m91=m92=

k91=

k92=

Fan= cm2

Fad= cm2

Fgn= cm2

Fgd= cm2


Fan= cm2 Fan= cm2

Fad= cm2 Fad= cm2

Fgn= cm2 Fgn= cm2

Fgd= cm2 Fgd= cm2 L îng thÐp bè trÝ nh vËy lµ thõa nhiÒu ë phÇn nhÞp

(kg/m2)


m91=

m92=

d

n

l

l

d

n

l

l

d

n

l

l

91 91.M m P

92 92.M m P

91 91.M k P

92 92.M k P

d

n

l

l

0.0459


0.2394 (T.m) 1.168

0.1006 (T.m) 0.601

0.5336 (T.m) 2.653


1.59 4.71

0.76 4.71

4.85 5.5

2.18 4.71Þ

thõa nhiÒu t¹i phÇn nhÞp

k91=

k92=

Fan= cm2

Fad= cm2

Fgn= cm2

Fgd= cm2


Fan= cm2 Fan= cm2

Fad= cm2 Fad= cm2

Fgn= cm2 Fgn= cm2

Fgd= cm2 Fgd= cm2 KÕt qu¶ tÝnh to¸n lín vµ c¸ch bè trÝ cèt thÐp lµ

91 91.M m P

92 92.M m P

91 91.M k P

92 92 .M k P

ta cã c«ng thøc vµ b¶ng tra ®Ó thiÕt kÕ cÊu kiÖn BTCT ®èi víi ®an sµn ®¬n lµm -Xeùt tæ soá :

-Caét daûi baûn 1m theo phöông caïnh ngaén ñeå tính

So s¸nh c¸ch bè trÝ thÐp trong thuyÕt minh

*) TÝnh to¸n b¶n sµn mét ph ¬ng

1- ¤ sµn hµnh lang s¶nh 2,1 x 12m( q=700kg/m2)

® Baûn laøm vieäc theo phöông ngaén

Fa gèi f10a200 vµ Fa nhÞp f8a200 => ®¶m b¶o

2

1

125,7143 2

2,1

l

l

2 2

2 2

0,7.2,10,128625( . ) 12862,5( . )

24 24

0,7.2,10,25725 ( . ) 25725( . )

12 12

nh

g

qlM T m kG cm

qlM T m kG cm

2 20

2 20

12862,50.0198

90.100.8,5

257250.0396

90.100.8,5

nhnh

n

gg

n

MA

R bh

MA

R bh

1 1 2 0.02

1 1 2 0.04

nh

g

A

A

20

0 2

0,02.90.100.8,50.588

2600

0,04.90.100.8,51,177

2600

nh nanh

a

g nag

a

R bhF cm

R

R bhF cm

R

-Xeùt tæ soá :

-Caét daûi baûn 1m theo phöông caïnh ngaén ñeå tính

So s¸nh c¸ch bè trÝ thÐp trong thuyÕt minh

2- ¤ sµn khu vÖ sinh 1,8 x 3,9m( q=730kg/m2)

® Baûn laøm vieäc theo phöông ngaén

Fa gèi f8a200 vµ Fa nhÞp f8a200 => ®¶m b¶o

2

1

3,92,17 2

1,8

l

l

2 2

2 2

0,73.1,80,098( . ) 9855( . )

24 24

0,7.2,10,1971 ( . ) 19710( . )

12 12

nh

g

qlM T m kG cm

qlM T m kG cm

2 20

2 20

98550.0121

90.100.9,5

197100.0242

90.100.9,5

nhnh

n

gg

n

MA

R bh

MA

R bh

1 1 2 0.01225

1 1 2 0.0245

nh

g

A

A

20

0 2

0,01225.90.100.9,50.403

2600

0,04.90.100.9,50,806

2600

nh nanh

a

g nag

a

R bhF cm

R

R bhF cm

R

2 2

2 2

0,7.2,10,128625( . ) 12862,5( . )

24 24

0,7.2,10,25725 ( . ) 25725( . )

12 12

nh

g

qlM T m kG cm

qlM T m kG cm

20

0 2

0,02.90.100.8,50.588

2600

0,04.90.100.8,51,177

2600

nh nanh

a

g nag

a

R bhF cm

R

R bhF cm

R

2 2

2 2

0,73.1,80,098( . ) 9855( . )

24 24

0,7.2,10,1971 ( . ) 19710( . )

12 12

nh

g

qlM T m kG cm

qlM T m kG cm

S¥ §å 9(s¬ ®å 1 ë ®©y) S¥ §å 7(s¬ ®å 2 ë ®©y)

1 0.0179 0.0179 0.0417 0.0417 1 0.0226 0.0198no #VALUE! #VALUE! #VALUE! #VALUE! no #VALUE! #VALUE!

1.05 0.0178 0.0171 0.0437 0.0394 1.05 0.0231 0.0184no #VALUE! #VALUE! #VALUE! #VALUE! no #VALUE! #VALUE!

1.1 0.0194 0.0161 0.045 0.0372 1.1 0.0234 0.02691.125 0.0197 0.01555 0.04555 0.03605 1.125 0.0235 0.02115


















2 0.0183 0.0046 0.0392 0.0098 2 0.0189 0.004

150 200 250 300 350 400 50065 90 110 130 155 170 215

6 7.5 8.8 10 11 12 13.5210000 240000 265000 290000 310000 330000 360000

l2/l1 m91 m92 k91 k92 l2/l1 m71 m72

S¥ §å 7(s¬ ®å 2 ë ®©y) S¥ §å 8(s¬ ®å 3 ë ®©y) S¥ §å 6(s¬ ®å 4ë ®©y)

0.0556 0.0417 1 0.0198 0.0226 0.0417 0.0556 1#VALUE! #VALUE! no #VALUE! #VALUE! #VALUE! #VALUE! no

0.056 0.0385 1.05 0.0213 0.0221 0.045 0.0545 1.05#VALUE! #VALUE! no #VALUE! #VALUE! #VALUE! #VALUE! no

0.0565 0.035 1.1 0.0226 0.0212 0.0481 0.053 1.10.05645 0.03345 1.125 0.0232 0.0209 0.0494 0.05205 1.125


















0.0404 0.0076 2 0.028 0.0081 0.0555 0.0187 2

k71 k72 l2/l1 m81 m82 k81 k82 l2/l1

S¥ §å 6(s¬ ®å 4ë ®©y) S¥ §å 4(s¬ ®å 5 ë ®©y)

0.0269 0.0269 0.0625 0.0625 1 0.0267 0.018 0.0694#VALUE! #VALUE! #VALUE! #VALUE! no #VALUE! #VALUE! #VALUE!

0.0282 0.0255 0.0655 0.059 1.05 0.0267 0.0161 0.068#VALUE! #VALUE! #VALUE! #VALUE! no #VALUE! #VALUE! #VALUE!

0.0292 0.0242 0.0675 0.0558 1.1 0.0266 0.0146 0.06670.02965 0.0235 0.0683 0.054 1.125 0.0265 0.01385 0.06585


















0.0294 0.0074 0.0588 0.0147 2 0.0193 0.003 0.0412

m61 m62 k61 k62 l2/l1 m41 m42 k41

S¥ §å 4(s¬ ®å 5 ë ®©y) S¥ §å 5(s¬ ®å 6 ë ®©y) S¥ §å 3(s¬ ®å 7 ë ®©y)

0 1 0.018 0.0267 0 0.0694 1 0.0273#VALUE! no #VALUE! #VALUE! #VALUE! #VALUE! no #VALUE!

0 1.05 0.0199 0.0265 0 0.0705 1.05 0.0293#VALUE! no #VALUE! #VALUE! #VALUE! #VALUE! no #VALUE!

0 1.1 0.0218 0.0262 0 0.0708 1.1 0.03130 1.125 0.0227 0.026 0 0.0709 1.125 0.032250 1.15 0.0236 0.0258 0 0.071 1.15 0.0332

#VALUE! no #VALUE! #VALUE! #VALUE! #VALUE! no #VALUE!0 1.2 0.0254 0.0254 0 0.0707 1.2 0.0348
















#VALUE! no #VALUE! #VALUE! #VALUE! #VALUE! no #VALUE!0 2 0.04 0.0146 0 0.0397 2 0.0443

k42 l2/l1 m51 m52 k51 k52 l2/l1 m31

S¥ §å 3(s¬ ®å 7 ë ®©y) S¥ §å 2(s¬ ®å 8 ë ®©y)

0.0334 0 0.0893 1 0.0334 0.0273 0.0892 0#VALUE! #VALUE! #VALUE! no #VALUE! #VALUE! #VALUE! #VALUE!

0.0325 0 0.0882 1.05 0.0343 0.0252 0.0895 0#VALUE! #VALUE! #VALUE! no #VALUE! #VALUE! #VALUE! #VALUE!

0.0313 0 0.0867 1.1 0.0349 0.0231 0.0892 00.03075 0 0.08555 1.125 0.0351 0.0222 0.08885 0


















0.0142 0 0.0338 2 0.0303 0.0056 0.061 0

m32 k31 k32 l2/l1 m21 m22 k21 k22

S¥ §å 1(s¬ ®å 9 ë ®©y) S¥ §å 10(s¬ ®å 10 ë ®©y)

1 0.0365 0.0365 0 0 1 0.0099 0.0457no #VALUE! #VALUE! #VALUE! #VALUE! no #VALUE! #VALUE!

1.05 0.0384 0.0341 0 0 1.1 0.0102 0.0492no #VALUE! #VALUE! #VALUE! #VALUE! 1.125 0.0102 0.049875

1.1 0.0399 0.033 0 0 1.2 0.0102 0.05191.125 0.04065 0.0322 0 0 no #VALUE! #VALUE!

1.15 0.0414 0.0314 0 0 1.3 0.01 0.054no #VALUE! #VALUE! #VALUE! #VALUE! no #VALUE! #VALUE!

1.2 0.0428 0.0298 0 0 1.4 0.0097 0.0552no #VALUE! #VALUE! #VALUE! #VALUE! no #VALUE! #VALUE!

1.25 0.044 0.0282 0 0 1.5 0.0095 0.0556no #VALUE! #VALUE! #VALUE! #VALUE!

1.3 0.0452 0.0268 0 0no #VALUE! #VALUE! #VALUE! #VALUE!














2 0.0473 0.0118 0 0

l2/l1 m21 m22 k21 k22 l2/l1 m10-1 m10-2

S¥ §å 10(s¬ ®å 10 ë ®©y) S¥ §å 11(s¬ ®å 11 ë ®©y)

0.051 0.0853 1 0.0457 0.009 0.0855 0.051#VALUE! #VALUE! no #VALUE! #VALUE! #VALUE! #VALUE!

0.0574 0.093 1.1 0.0421 0.0094 0.0777 0.04480.05895 0.09475 1.125 0.0413 0.009225 0.076075 0.042093

0.0636 0.1 1.2 0.0389 0.0087 0.0712 0.03397#VALUE! #VALUE! no #VALUE! #VALUE! #VALUE! #VALUE!



0.0821 0.1155 1.5 0.0311 0.0059 0.0562 0.0279

k10-1 k10-2 l2/l1 m21 m22 k21 k22

Delete

san 2 phuong-pptra bang

Documents