GioXII. xc nh ti trng gi X .* n v: Chiu di - Mt ; Khi lng - Tn ;
Lc - Tn (Tn lc =10KN) ; Thi gian - Giya im:H Ch MinhQun G VpCp
C.T:IIBTCT-IIVng:IIA2.1. Thnh phn tnh* C. thc tnh gi tr tnh ton
thnh phn tnh ca ti trng gi W cao z:W = g * Wo * k * c.Trong :+ Wo l
gi tr TC p lc gi tnh, vng II, nh hng bo A, c W=0.0832+ k l h s k n
s thay i ca p lc gi theo cao v dng a hnh ly theo bng 5Ti khu vc Qun
G Vp , k c tra theo loi a hnh dngA53.8+ c l h s kh ng ly theo bng
6.c y =0.8c ht =0.6+ g l h s tin cy ca ti trng gi, ly bng:1.2+ Bx:
B rng n gi X (song song vi phng Y)53.80+ Ct mt t:-1+ Ct mt mng cng
trnh:-1*. Tng ti trng gi (y+ht) ln tng tng, qui v lc tp trung:Cc
tng.Cao h tngH s kBxi (m)Txi (kN)qy (kN/m)qht (kN/m)Cao h tngH s
kBxi (m)Txi (kN)qy (kN/m)qht
(kN/m)TANGTRIET13.90.8653.8010.483.702.7713.90.861.0010.480.070.05TANG23.93.31.0353.8016.964.433.323.93.31.033.9016.960.320.24TANG37.23.31.1153.8015.874.773.587.23.31.117.2015.870.640.48TANG410.53.31.1753.8016.845.033.7710.53.31.1710.5016.840.980.74TANG513.83.31.2153.8017.605.203.9013.83.31.2113.8017.601.331.00TANG617.13.31.2553.8016.675.374.0317.13.31.2517.1016.671.711.28TANG720.43.31.2753.8017.145.464.0920.43.31.2720.4017.142.071.55TANG823.73.31.3053.8017.565.594.1923.73.31.3023.7017.562.461.85TANG9273.31.3253.8017.935.674.25273.31.3227.0017.932.852.13TANG1030.33.31.3453.8018.285.764.3230.33.31.3430.3018.283.242.43TANG1133.63.31.3653.8018.595.844.3833.63.31.3633.6018.593.652.74TANGMAI36.93.31.3853.8018.895.934.4536.93.31.3836.9018.894.073.05SANTHUONG38.921.397.5019.160.830.6238.921.3938.9019.164.323.24Tng
170.0053.800.00Tng 180.0053.800.00Tng 190.0053.800.00Tng
200.0053.800.00Tng 210.0053.800.00Tng 220.0053.800.00Tng
230.0053.800.00Tng 240.0053.800.00Tng 250.0053.800.00Tng
260.0053.800.00Tng 270.0053.800.00Tng 280.0053.800.00Tng
290.0053.800.00Tng 300.0053.800.00Tng 310.0053.800.00Tng
320.0053.800.00Tng 330.0053.800.00Tng 340.0053.800.00Tng
350.0053.800.00Tng 360.0053.800.00Tng 370.0053.800.00Tng
380.0053.800.00Tng 390.0053.800.00Tng 400.0053.800.00Tng
410.0053.800.00Tng 420.0053.800.00Tng 430.0053.800.00Tng
440.0053.800.00Tng 450.0053.800.00Tng 460.0053.800.00Tng
470.0053.800.00Tng 480.0053.800.00Tng 490.0053.800.00Tng
500.0053.800.00Tng42.2013+sotang2.2. Thnh phn ng.* c trng ca tng
tng: (nu tnh c trng ng lc hc bng ETABS th khng cn nhp EJ)Cc tng.Ct
cao h tngM (T)EJx
(Tm2)13+sotangTANGTRIET1.003.9057.09TANG23.903.3036.58TANG37.203.3040.99TANG410.503.3038.33TANG513.803.30371.02TANG617.103.30380.81TANG720.403.30380.81TANG823.703.30380.81TANG927.003.30380.81TANG1030.303.30380.81TANG1133.603.30380.81TANGMAI36.903.30380.81SANTHUONG38.902.00380.81Tng
170.000.00Tng 180.000.00Tng 190.000.00Tng 200.000.00Tng
210.000.00Tng 220.000.00Tng 230.000.00Tng 240.000.00Tng
250.000.00Tng 260.000.00Tng 270.000.00Tng 280.000.00Tng
290.000.00Tng 300.000.00Tng 310.000.00Tng 320.000.00Tng
330.000.00Tng 340.000.00Tng 350.000.00Tng 360.000.00Tng
370.000.00Tng 380.000.00Tng 390.000.00Tng 400.000.00Tng
410.000.00Tng 420.000.00Tng 430.000.00Tng 440.000.00Tng
450.000.00Tng 460.000.00Tng 470.000.00Tng 480.000.00Tng
490.000.00Tng 500.000.0023+2*sotangTng3590.49Cc h s ng vi 3 dng dao
ng ring ca cng trnh:a1a2a313+2*sotangB1B2B313+2*sotangCc chu k dao
ng ring c bn ca cng trnh (Xc nh theo phn mm phn tch kt
cu):T1T2T3T4T5T6Cc tn s dao ng ring c bn ca cng trnh:fL
(Hz)f1f2f31.30.0000.0000.00034+2*sotangTrong fL l gi tr gii hn ca
tn s dao ng ring, ng vi vng p lc:II KC BTCTd=0.3-r:H s tng quan
khng gian p lc ng ca ti trng
gi.r=28.000c=54.45038+2*sotang-xn=0.68939+2*sotangH s ng lc c tra
theo:e=(g*Wo)/(940*f)e1e2e3a hnh dng A: k=0.857*( cao)^0.1316a hnh
dng B: k=0.6583*( cao)^0.1808x1x2x3a hnh dng C: k=0.346*(
cao)^0.279144+2*sotang1.2*95*1.453*1.4*38.7*3.3 /1000 = 29.6 (T)*.
Tng ti trng gi (y+ht) ln tng tng, qui v lc tp trung:TpCc tng.Ct cao
WzWFj (f1>fL)f1
