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小浪底土石坝纵向振动简化动力分析
Simplified Dynamic Analysis of Longitudinal Vibration for Xiaolangdi Earth Rock Dam
【摘要】 采用三维剪切楔理论和BubnovGalerkin 方法,对小浪底土石坝的纵向地震反应进行简化分析,得到了该坝的最大位移、最大速度、最大加速度、最大应力等动力特性.分析成果表明,小浪底大坝的基本自振周期约为1319s,坝顶的最大绝对加速度约为1036g .
【Abstract】 By use of the 3 dimensional shear wedge theory and the Bubnov Galerkin method,a simplified dynamic analysis of longitudinal earthquake responses of the Xiaolangdi earth rock dam is made.Some dynamic characteristics,such as the maximum displacement,speed,acceleration and stress,are obtained.The analysis result shows that the fundamental frequency of the Xiaolangdi earth rock dam is about 1 319 s.Its maximum absolute acceleration at the dam crest is about 1 036 g during earthquakes.
【关键词】 土石坝;
纵向振动;
地震反应;
反应谱;
【Key words】 earth rock dam; longitudinal vibration; earthquake response; response spectrum;
【Key words】 earth rock dam; longitudinal vibration; earthquake response; response spectrum;
- 【文献出处】 河海大学学报(自然科学版) ,JOURNAL OF HOHAI UNIVERSITY , 编辑部邮箱 ,1999年05期
- 【分类号】TV312
- 【下载频次】78