动水作用下大型渡槽结构有限条法地震反应分析  

Seismic Response Analysis for Large-scale Aqueduct with Fluid Influence Based on Finite Strip Method

作　　者：李起丛 王云峰 黄玉红 

机构地区：[1]广西南宁桂澜水电设计有限公司,广西南宁530001 [2]广西南宁水利电力设计院,广西南宁530001 [3]广西南宁良庆区农林水利局,广西南宁530219

出　　处：《水利与建筑工程学报》2011年第3期153-155,共3页Journal of Water Resources and Architectural Engineering

摘　　要：根据有限条法原理,把渡槽槽身划分为若干有限条,推导出渡槽槽身结构的单元刚度矩阵、质量矩阵的显示表达式。采用空间梁单元模拟渡槽支架,联接槽身和支架的支座采用弹性元件单元模拟;采用附加质量法考虑水体的动水作用;计算了大型渡槽结构在三种工况分别输入三种地震波作用下的时程响应。Based on the theory of finite strip method,the aqueduct body is discretely meshed into some strips,and the explicit formulas for the element stiffness and mass matrix of the aqueduct body are derived.The braces of the aqueduct are simulated by using beam elements,and the rubber supports linking the aqueduct body and its braces are simulated by using spring elements.Then,the earthquake time history response of the large-scale aqueduct with fluid influence by added mass method is discussed under three cases and during respectively inputting three synchronous earthquake waves.

关 键 词：大型渡槽结构 有限条法 动水作用 地震时程响应 

分 类 号：TV672.3[水利工程—水利水电工程]