第三章 地震作用和结构抗震验算
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Transcript of 第三章 地震作用和结构抗震验算
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3.1 3.1.1
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3.1
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3.2
3.3
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3.1.2 1.
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1
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3.7
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2. Fdt t=dt
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t=dt
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3.12
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3.
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3.
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3.1.3
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3.23.2.1 F(t)
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Km2
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F
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___ ___ ___
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___ ___
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G
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3.2.2kaI
3.1 kaII6789ka0.0540.1070.2150.429
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3.2.3
Sa
1.0 0.0 1.0
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3.6 T
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3.2.4
TT
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T
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1 0.05
21.0
0.9
10.02
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2 0.052 12max 2 =0.9+0.05-/0.05+5 3.31
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31 1=0.020.05-/8 3.32 100
42 2=10.05-/0.06+1.7
20.550.55
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3.2
6 7 8 9 0.040.08(0.12)0.16(0.24)0.32 0.5(0.72)0.9(1.2)1.4
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3.3 Ts
0.250.350.450.650.300.400.550.750.350.450.650.90
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3.1
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3.1 K
FEK= G
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P50p61
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3.3 3.3.1
3.34
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3.38
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n1 ,2.K .n KA 1(K) , A 2(K) .A n(K)
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K
X=(X(1) X(2) X(n))
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ij
IjK
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x=X YX__Y__
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K
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3.3.2 1.
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XT3.60
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Yj
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2.
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3.70
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3.23.16
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3.4
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j__i__
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ji
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Sj(
23T11.5H/B5
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3.3 Km
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3.5 40m
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3.20
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T11.4Tg
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3.4 n
T1
Tg (s)T11.4TgT11.4Tg 0.35 0.08T1+0.07
0.00.350.550.08T1+0.010.550.08T1-0.02
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3.7
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3.6
VEkii3.5 Grr
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3.5
1.153
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(891.25
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1 3
T1(s)T(s)3.6
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3.6 T
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2 31
3 :
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3.7
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9(
i
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24m3.7
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8
0.30g
9
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3.8
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3.9 1
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2 15
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3
4 899 89
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5 40m
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7 3.86580
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3.8
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3.10 3.10.1 __
rRE__
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3.9 rRE
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3.10.2 1.
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ue 1.0
[e]3.10h
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3.10
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2.1 1) 89 2) 790.5 3)150m 4)9 5)
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()1 12 2 1 3
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() 1 () 1) 2) () 23 3)
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y
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Vy__
Ve__
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upuep ()()0.83.11 0.51.5
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uyy
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3.11 P
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()
[p]3.120.401030%2025h
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3.12
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END
FEvk Fvii vmax65Geq75