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THT K KHUNG TRCS KHUNGHnh m hnh khung khng gianTi trng Tnh ti

Khi khai bo trong etabs, cc s liu v trng lng ring ca cu kin s c chng trnh t tnh nn ta b qua vic khai ny. Trng lng cc lp hon thin ca sn thng, sn nh v sinh v l gia.Bng 4.1- Cu to v tnh ti khai bo ca sn thng, sn v sinh v l gia.STTCu to n (kN/m3)(m)gtc (kN/m2) gtt (kN/m2)

1Gch ceramic 1.2200.010.20.24

2Va lt 1.3180.010.180.23

3Va trt 1.3180.010.180.23

Tng ti0.560.71

Trng lng cc lp hon thin ca sn sn thng v sn hm. Bng 4.2 -Cu to v tnh ti khai bo ca sn hm v sn miSTTCu ton(kN/m3)(m)gtc (kN/m2) gtt (kN/m2)

1Va lt 1.3180.010.180.23

2Va trt 1.3180.010.180.23

Tng ti0.360.47

Hot ti: Bng 4.3 Thng k hot ti khai bo ca tng sn.snchc nngdin tch(m2)nhot ti(kN/m2)hot titng ng(kN/m2)h sgim tihot titng ng(kN/m2)

S1phng ng12.091.21.950.310.160.31

phng lm vic9.091.21.95

S2l gia3.521.34.80.380.160.38

phng ng17.921.21.95

S3phng khch20.441.21.950.310.160.31

S4l gia3.471.34.80.390.160.39

phng ng10.371.21.95

phng khch6.141.21.95

S5phng v sinh4.111.21.950.300.150.30

phng khch3.431.21.95

phng khch14.411.21.95

S6phng v sinh3.351.21.950.310.160.31

phng bp3.761.21.95

phng bp13.591.21.95

S7phng v sinh6.951.21.950.540.200.54

phng snh6.641.23.6

S8phng bp7.21.21.950.530.190.53

phng snh6.881.33.6

S9phng snh13.421.33.60.710.200.71

S10phng snh17.61.33.60.620.170.62

S11phng snh161.33.60.650.180.65

Ti tng truyn ln dm.

Trong : Bt : chiu dy tng (m). Ht : chiu cao tng (m). t : khi lng ring ca tng, t = 18 (kN/m3). n : h s vt ti, n =1.2.Bng 4.4 Thng k ti trng tng truyn ln sn.chiu cao tng(m)loi tngxy trn dm(kN/m)trn sn (kN/m)trn ban cng (kN/m)

D 200x300D300x600

320012.96--12.96

3.3100-7.137.13-

200-14.2614.2614.26

2.7100-5.835.83-

200-11.6611.6611.66

4.7100-10.1510.15-

200-20.320.320.3

Gi tnh

Gi tr tiu chun thnh phn gi tnh ca ti trng gi W cao Z so vi mc chun c xc nh theo cng thc. W0 = W*k*c Trong : Wo l gi tri p lc gi ly theo bn phn vng ph lc D v iu 6.4 (Thnh ph H Ch Minh thuc vng IIA); Wo = 83 daN/m2 = 0.83 kN/m2.

k: h s tnh n s thay i p lc gi theo cao ly theo cng thc:. (TCVN 229 1999) c: h s kh ng ly theo bng 6 ca TCVN 2737-1995

Gi tr tnh ton thnh phn gi tnh: Wtt = .Wo = 1.2 Wo

Bng 4.5 -Thng k ti trng gi tnh ln tng tng.

Tng w0 (kN/m2)H (m)htt (m)KcW (kn/m2)B (m)Fx(kN)L (m)Fy (kN)

mi thang my0.8352.22.51.041.41.452840.64666.7

mi0.8349.73.31.031.41.442840.324666.24

140.8346.43.31.011.41.412839.484664.86

130.8343.13.30.991.41.382838.644663.48

120.8339.83.30.971.41.352837.84662.1

110.8336.53.30.941.41.312836.684660.26

100.8333.23.30.921.41.282835.844658.88

90.8329.93.30.891.41.242834.724657.04

80.8326.63.30.861.41.22833.64655.2

70.8323.33.30.831.41.162832.484653.36

60.83203.30.81.41.122831.364651.52

50.8316.73.30.761.41.062829.684648.76

40.8313.43.30.711.40.992827.724645.54

30.8310.13.30.661.40.922825.764642.32

20.836.85.30.591.40.822822.964637.72

10.831.51.50.391.40.542815.124624.84

Gi ngBc 1: xem cng trnh c thuc phm vi tnh ton thnh phn ng khng.Cng trnh c chiu cao trn 40m nn cn phi tnh thnh phn ng ca ti trng gi.Cc bc tnh ton thnh phn gi ng ca ti trng giBc 2: thit lp s tnh ton ng hc. s tnh ton l thanh cng xn c hu hn im tp trung khi lng.Lu : im tp trung khi lng; t cao trnh trng tm kt cu. Gi tr khi lng tp trung = TT+0.5HT(xem bng 1 tnh h s chit gim i vi 1 s dng khi lng cht tm thi trn cng trnh.

4.6-Bng h s chit gim i vi mt s dng khi lng cht tm thi trn cng trnh.

Bc 3: xc nh gi tr tiu chun thnh phn tnh ca p lc gi ln cc thnh phn ca cng trnh.Bc 4: xc nh gi tr tiu chun v gi tr tnh ton thnh phn ng ca ti trng gi.Xc nh gi tr tiu chun v tnh ton

Xc nh tn s dao ng f1(Hz) ca cng trnh ( da vo cc phn mm sap, etabs,, hoc cng thc trang 25 TCXD 229)

; Gi tr fL 4.7bng sau:

=0.3: s dng cho cng trnh b tng ct thp c kt cu bao che.

=0.15: s dng cho cng trnh thp, tr thp, ng khi.

So snh f1 v fL l gi tr gii hn ca tn s dao ng ph thuc vo vng p lc gi v h s :

(l gim loga dao ng ca kt cu, ph thuc dng kt cu v vt liu chu lc ca cng trnh).Trng hp 1:f1 > fLthnh phn ng ch xt n xung vn tc gi.

Gi tri tiu chun thnh phn ng ca p lc gi tc dng ln cng trnh:

Trong d :

: p lc ng ca ti trng gi.

: gi tr tiu chun thnh phn tnh ca p lc gi.

: l h s p lc ch ng ca ti trng gi, cao tng ng phn th j ca cng trnh, khng th nguyn.

: h s tng quan p lc ng ca ti gi ng vi dng dao ng khc nhau ca cng trnh, khng th nguyn.

Cch xc nh h s p lc ng

Bng 4.8 trang 8- H s p lc ng

X nh bng cch tra bng hoc s dng cng thc .

Cach xc nh h s tng quan khng gian p lc ng

(dng dao ng th nht ) ly theo bng 4 => ph thuc kch thc mt n gi.

( dng dao ng th 2 v th 3)

Bng 4.9 - h s tng quan khng gian , ph thucv.

Bng 4.10 cc tham s v.

Ghi ch: gi phng X, v; gi phng Y, vTrng hp 2: f1 < fLThnh phn ng phi xt n xung vn tc gi + lc qun tnh ca cng trnh. Khi , ta phi xc nh s dng dao ng cn tnh ton.Gi tr tiu chun thnh phn ng tc dng ln phn th j ng vi dng dao ng i:

Trong :

: p lc ng ca ti trng gi tc dng ln phn th j ca cng trnh ng vi dng dao ng th i.

:khi lng tp trung ca ph cng trnh th j.

: h s ng lc ng vi dng dao ng th I, khng th nguyn.

:h s c xc nh bng cch chia cng trnh thnh n phn, trong phm vi mi phn, trong phm vi mi phn ti trng gi c th coi nh l khng i.

: dch chyn ngang t i ca trng tm phn cng trnh th j ng vi dng do ng ring th I, khng th nguyn.

Cch xc nh h s ng lc ng vi dng dao ng i.

ph thuc vo thng s v gim loga ca dao ng :

Trong :: h s tin cy =1.2.W0: p lc gi tiu chun.

th xc nh h s ng lc dng cong 1( =0.3); ng cong 2(=0.15)

Cch xc nh dch chuyn ngang t i Da vo cc phn mm sap, etabs,, hoc cng thc trang 25 TCXD 229 nh sau:

Trong cc h s i v Bi ng vi 3 dng dao ng u tin ly bng

Cch xc nh cc h s

Trong :

: l thnh phn ng ca ti trng gi tc ng khc nhau khi ch k n nh hng ca xung vn tc gi.

Ghi ch: : tnh ging nh nhng c nhn thm vi Sj kt qu t p lc thnh lc.Gi tr tnh tonthnh phn ng

W: l gi tr tiu chun thnh phn ng ca ti trng gi, ly bng hoc.: l h s iu chnh ti trng gi theo thi gian s dng cng trnh; : l h s tin cy =1.2.bng h s

Bng 4.11Bng thng k chu k v tn s dao ng ca 12 mode.modechu kf

11.8770.5328

21.86320.5367

31.66240.6015

40.55181.8123

50.52791.8942

60.49812.0076

70.26793.7324

80.24874.0203

90.24834.028

100.15796.3343

110.1486.7553

120.1476.8035

Bng 4.12Bng s liu tng quan gia i v i ca 3 mode u.modef(hz)i

10.53280.0631.764

20.53670.06261.767

30.60150.05581.812

4.13 s liu p lc ng ca ti trng gi theo tng tng ca cng trnh ng vi mode 1Tng HixWFjxvyWFjy

mi thang my52.20.540.64630.2896530.6810.305

mi49.70.550.64630.2950170.6810.311

1446.40.550.64630.2950170.6810.311

1343.10.560.64630.300380.6810.316

1239.80.560.64630.300380.6810.316

1136.50.570.64630.3057440.6810.322

1033.20.580.64630.3111080.6810.328

929.90.590.64630.3164720.6810.333

826.60.60.64630.3218360.6810.339

723.30.610.64630.32720.6810.345

6200.620.64630.3325640.6810.35

516.70.640.64630.3432920.6810.362

413.40.660.64630.354020.6810.373

310.10.680.64630.3647480.6810.384

26.80.720.64630.3862030.6810.407

11.50.890.64630.477390.6810.503

Bng 4.14 s liu p lc ng ca ti trng gi theo tng tng ca cng trnh ng vi mode 2

Tng HixWFxvyWFy

mi thang my52.20.5410.448210.4482

mi49.70.5510.456510.4565

1446.40.5510.456510.4565

1343.10.5610.464810.4648

1239.80.5610.464810.4648

1136.50.5710.473110.4731

1033.20.5810.481410.4814

929.90.5910.489710.4897

826.60.610.49810.498

723.30.6110.506310.5063

6200.6210.514610.5146

516.70.6410.531210.5312

413.40.6610.547810.5478

310.10.6810.564410.5644

26.80.7210.597610.5976

11.50.8910.738710.7387

Bng 4.15Bng s liu p lc ng ca ti trng gi theo tng tng ca cng trnh ng vi mode 3Tng HixWFxvyWFy

mi thang my52.20.5410.448210.4482

mi49.70.5510.456510.4565

1446.40.5510.456510.4565

1343.10.5610.464810.4648

1239.80.5610.464810.4648

1136.50.5710.473110.4731

1033.20.5810.481410.4814

929.90.5910.489710.4897

826.60.610.49810.498

723.30.6110.506310.5063

6200.6210.514610.5146

516.70.6410.531210.5312

413.40.6610.547810.5478

310.10.6810.564410.5644

26.80.7210.597610.5976

11.50.8910.738710.7387

Bng 4.16- Gi ng theo phng OX ng vi mode 1.Tng DiaphragmModeWFjkN/m2MassX(kN)UX=yi (m)yi*WFj(yi^2)*MiiWp(ji)(kN/m2)htt (m)B(m)Wp(kN)

mi thang myDM210.29118.6171.764-0.0080.00240.00800.03910.067102.5468.951

miDM110.2951162.3841.764-0.0080.00230.07250.03910.633463.34696.159

14DM10.2951549.9391.764-0.0080.00220.08950.03910.812593.346123.350

13D210.31549.9391.764-0.0070.00220.08030.03910.769823.346116.858

12D310.31565.5081.764-0.0070.0020.07240.03910.734353.346111.475

11D210.3061583.4501.764-0.0060.0020.06490.03910.699083.346106.120

10D310.3111583.4501.764-0.0060.00180.05510.03910.644463.34697.829

9D210.3161600.4851.764-0.0050.00170.04500.03910.585153.34688.826

8D310.3221619.6521.764-0.0050.00150.03580.03910.525123.34679.714

7D210.3271619.6521.764-0.0040.00130.02720.03910.458093.34669.537

6D310.3331638.1411.764-0.0030.00110.01890.03910.384213.34658.323

5D210.3431658.5331.764-0.0030.00090.01210.03910.308913.34646.892

4D310.3541658.5331.764-0.0020.00070.00730.03910.240263.34636.472

3D210.3651678.4371.764-0.0010.00050.00330.03910.162103.34632.063

2D310.3861914.9421.764-0.0010.00030.00160.03910.118895.34618.594

1D110.4771920.0451.7640.0001E-040.00010.03910.026491.5460.914

Bng 4.17- Gi ng theo phng OX ng vi mode 2Tng DiaphragmModeWFj(kN/m2)MassX(kN)UX=yi (m)yiWFjyi2MiiWp(ji)(kN/m2)htt (m)B(m)Wp(kN)

mi thang myDM220.4482118.61671.767000.000000.000002.5460

miDM120.45651162.3841.767000.000000.000003.3460

14DM20.45651549.9391.767000.000000.000003.3460

13D220.46481549.9391.767000.000000.000003.3460

12D320.46481565.5081.767000.000000.000003.3460

11D220.47311583.451.767000.000000.000003.3460

10D320.48141583.451.767000.000000.000003.3460

9D220.48971600.4851.767000.000000.000003.3460

8D320.4981619.6521.767000.000000.000003.3460

7D220.50631619.6521.767000.000000.000003.3460

6D320.51461638.1411.767000.000000.000003.3460

5D220.53121658.5331.767000.000000.000003.3460

4D320.54781658.5331.767000.000000.000003.3460

3D220.56441678.4371.767000.000000.000003.3460

2D320.59761914.9421.767000.000000.000005.3460

1D120.73871920.0451.767000.000000.000001.5460

Bng 4.18- Gi ng theo phng OX ng vi mode 3Tng DiaphragmModeWFj(kN/m2)MassX(kN)UX=yi (m)yiWFjyi2MiiWp(ji)(kN/m2)htt (m)B(m)Wp(kN)

mi thang myDM230.4482118.61671.812000.000000.000002.5460

miDM130.45651162.3841.812000.000000.000003.3460

14DM30.45651549.9391.812000.000000.000003.3460

13D230.46481549.9391.812000.000000.000003.3460

12D330.46481565.5081.812000.000000.000003.3460

11D230.47311583.451.812000.000000.000003.3460

10D330.48141583.451.812000.000000.000003.3460

9D230.48971600.4851.812000.000000.000003.3460

8D330.4981619.6521.812000.000000.000003.3460

7D230.50631619.6521.812000.000000.000003.3460

6D330.51461638.1411.812000.000000.000003.3460

5D230.53121658.5331.812000.000000.000003.3460

4D330.54781658.5331.812000.000000.000003.3460

3D230.56441678.4371.812000.000000.000003.3460

2D330.59761914.9421.812000.000000.000005.3460

1D130.73871920.0451.812000.000000.000001.5460

Bng 4.19- Gi ng theo phng OY ng vi mode 1.Tng DiaphragmModeWFj(kN/m2)MassX(kN)UX=yi (m)yiWFjyi2MiiWp(ji)(kN/m2)Htt (m)B(m)Wp(kN)

mi thang myDM210.3052118.6171.764000002.540.60

miDM110.31081162.3841.764000003.340.320

14DM10.31081549.9391.764000003.339.480

13D210.31651549.9391.764000003.338.640

12D310.31651565.5081.764000003.337.80

11D210.32211583.4501.764000003.336.680

10D310.32781583.4501.764000003.335.840

9D210.33341600.4851.764000003.334.720

8D310.33911619.6521.764000003.333.60

7D210.34471619.6521.764000003.332.480

6D310.35041638.1411.764000003.331.360

5D210.36171658.5331.764000003.329.680

4D310.3731658.5331.764000003.327.720

3D210.38431678.4371.764000003.325.760

2D310.40691914.9421.764000005.322.960

1D110.5031920.0451.764000001.515.120

Bng 4.20Gi ng theo phng OY ng vi mode 2.Tng DiaphragmModeWFj(kN/m2)Mass(kN)UY=yi (m)yiWFjyi2MiiWp(ji)(kN/m2)htt (m)B(m)Wp(kN)

mi thang myDM220.448118.61671.7670.0090.00390.00880.0600.108172.5288.784

miDM120.4571162.3841.7670.0080.00370.07820.0601.010733.32893.391

14DM20.4571549.9391.7670.0080.00360.09430.0601.281983.328118.455

13D220.4651549.9391.7670.0070.00340.08260.0601.199803.328110.862

12D320.4651565.5081.7670.0070.00320.07450.0601.145453.328105.840

11D220.4731583.451.7670.0060.0030.06490.0601.074623.32899.295

10D320.4811583.451.7670.0060.00280.05330.0600.973883.32889.986

9D220.491600.4851.7670.0050.00250.04330.0600.882523.32881.545

8D320.4981619.6521.7670.0050.00230.03430.0600.790043.32873.000

7D220.5061619.6521.7670.0040.0020.02460.0600.669823.32861.891

6D320.5151638.1411.7670.0030.00170.01780.0600.573243.32852.967

5D220.5311658.5331.7670.0030.00140.01120.0600.457273.32842.251

4D320.5481658.5331.7670.0020.0010.00600.0600.334163.32830.876

3D220.5641678.4371.7670.0010.00070.00280.0600.231383.32827.858

2D320.5981914.9421.7678E-040.00050.00120.0600.162455.32815.465

1D120.7391920.0451.7672E-040.00010.00010.0600.040721.5280.855

Bng 4.21- Gi ng theo phng OY ng vi mode 3.Tng DiaphragmModeWFj(kN/m2)MassX(kN)UX=yi (m)yiWFjyiMiiWp(ji)(kN/m2)htt (m)B(m)WpkN

mi thang myDM210.3052118.61671.812000002.540.60

miDM110.31081162.3841.812000003.340.320

14DM10.31081549.9391.812000003.339.480

13D210.31651549.9391.812000003.338.640

12D310.31651565.5081.812000003.337.80

11D210.32211583.451.812000003.336.680

10D310.32781583.451.812000003.335.840

9D210.33341600.4851.812000003.334.720

8D310.33911619.6521.812000003.333.60

7D210.34471619.6521.812000003.332.480

6D310.35041638.1411.812000003.331.360

5D210.36171658.5331.812000003.329.680

4D310.3731658.5331.812000003.327.720

3D210.38431678.4371.812000003.325.760

2D310.40691914.9421.812000005.322.960

1D110.5031920.0451.812000001.515.120

Bc 5: xc nh ni lc v chuyn v gy ra do thnh phn tnh v thnh phn ng ca ti trng gi.

4.22Trong :X: l thnh phn lc hoc chuyn v do tng gi gy ra.Xt: l thnh phn ni lc hoc chuyn v do thnh phn ng ca ti trng gi gy ra khi dao ng dng th i.s:s dao ng tnh ton.

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