能力谱法用于渡槽结构地震响应数值分析的影响因素研究
摘要
本文以南水北调沙河南—黄河南沙河段工程的渡槽设计方案为背景,采用SAP2000建立渡槽模型,对其进行能力谱法与时程分析法对比研究,探求能力谱法用于渡槽结构地震响应数值分析的影响因素。结果表明,承台高度对渡槽结构的能力谱法分析结果的影响不可忽略;相比于Vidic关系模型的折减方法,选用ATC-40折减方法得到的弹塑性需求谱进行能力谱法分析的误差较大;渡槽能力谱法分析结果与时程分析结果的相对误差随着槽墩高度的增加而增加。
引文
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[2]Westergaard.Water Pressure on Dams During Earthquakes[J].Trans.ASCE,1933,98:418-433
[3]汪大绥,贺军利,张凤新.静力弹塑性分析(Pushover Analysis)的基本原理和计算实例[J].世界地震工程,2004,20(1).:45-53
[4]Applied Technology Council(ATC).Seismic Evaluation and Retrofit of Concrete Buildings(ATC-40)[R].Red Wood City,California.Report No.SSC96-01,1996
[5]Vidic T,Fajfar P,Fischinger M.A procedure for determining consistent inelastic design spectra.Proceeding of Workshop nonlinear seismic analysis of RC structures,Slovenia,1992.
[6]《水工建筑物抗震设计规范》(DL5073-2000)[S].北京:中国电力出版社,2001
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