Hardfill坝横向地震反应分析的剪切楔法

英文篇名：Shear wedge method of lateral seismic response analysis of Hardfill dams
中文刊名：武汉大学学报(工学版)
英文刊名：Engineering Journal of Wuhan University
作者：何蕴龙 ; 肖伟 ; 李平
英文作者：HE Yunlong ; XIAO Wei ; LI Ping(State Key Laboratory of Water Resources and Hydropower Engineering Science ; Wuhan University ; Wuhan 430072 ; China)
中文关键词：剪切楔 ; 自振频率 ; 振型 ; 动水压力 ; 反应谱
英文关键词：shear wedge ; natural frequency ; mode shape ; hydrodynamic pressure ; response spectrum
出版日期：2008-08-28
机构：武汉大学水资源与水电工程科学国家重点实验室;
年：2008
期：04
出版单位：武汉大学学报(工学版)

摘要

基于一维剪切楔理论,导出Hardfill坝自振频率和振型的计算公式,并采用一个简化等效体系计算动水压力引起的坝体自振频率和振型的变化.在此基础上,利用反应谱法计算Hardfill坝的地震动力反应.通过算例分析,比较剪切楔法与有限元法计算所得坝体自振特性,论证剪切楔法计算坝体地震动力反应的适用性和准确性.
Formulas for computing natural frequencies and mode shapes of Hardfill dams are derived based on one-dimensional shear wedge theory;and an equivalent system is applied to calculate the influences of the hydrodynamic pressure on natural freqeuencies and mode shapes.Furthermore,the seismic dynamic responses of Hardfill dams are calculated using response spectrum method.An example is analyzed to compare the differences of natural frequencies and mode shapes between shear wedge method and FEM;and the applicability and accuracy of shear wedge method to analyze the seismic dynamic responses of Hardfill dams are illustrated.

引文

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