0306760154602546035495地震载荷与地震弯矩计算计算内容计算公式及数据1(0~1)2(1~2)3(2~3)4(3~4)5(4~5)6(5~顶)hi1.51.12×1049.15×1045.56×1051.92×1064.06×1066.69.×10610mihi1.57.60×1063.31×1081.05×10104.30×10107.50×10101.29×1011???615.1iiihmA2.58×1011hi31.25×1088.37×1093.09×10113.7×10121.65×10134.47×1013mihi38.49×10103.03×10135.86×10158.29×10163.45×10178.60×1017???613iiihmB1.29×1018A/B2.0×10-7基本振型参与系数ηk15.175.11100.2iikhhBA?????0.002340.01870.110.3850.8261.37阻尼比0.02衰减指数=0.9+.975阻尼调整系数η2η2=1+地震影响系数最大值αmaxαmax=0.24(设计烈度为8度,设计基本地震加速度0.3g时)各类场地土的特征周期TgTg=0.4(地震分组为第二组,Ⅱ类场地土)地震影响系数α1086.01.319×24.052.14.0η2975.0max975.011???????????????????????TTgTg=0.4T1=1.52Tg=5水平地震力Fk1/NgmFkkk111???1.3457.0617577269.214571.822209.19垂直地震影响系αmaxαmax=0.65αmax=0.65?0.24=0.156当量质量meq/kg取meq=0.75m0=0.75底面垂直地震力/N=αmaxiihm3.47.351.283.465.336.831.70
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