矩形空心墩地震动水效应的求解

英文篇名：Earthquake induced hydrodynamic response on rectangular hollow bridge pier
中文刊名：四川建筑科学研究
英文刊名：Sichuan Building Science
作者：赖伟 ; 谢凌志 ; 高永昭
英文作者：LAI Wei1 ; XIE Lingzhi2 ; GAO Yongzao1(1.Sichuan Institute of Building Research ; Chengdu 610081 ; China ; 2.Institute of Building ; Sichuan University ; Chengdu 610065 ; China)
中文关键词：矩形空心桥墩 ; 地震 ; 动水力 ; 线性辐射波浪理论
英文关键词：rectangular hollow bridge pier ; earthquake ; hydrodynamic force ; linear radiation wave theory
出版日期：2007-12-05
机构：四川省建筑科学研究院,四川大学城建学院,四川省建筑科学研究院四川成都610081,四川成都610065,四川成都610081
年：2007
期：S1
出版单位：四川建筑科学研究

摘要

针对地震下弹性矩形空心桥墩上的动水力,提出了一个近似半解析半数值方法。基于线性辐射波浪理论利用特征函数扩展法分别得到了空心墩内部和外部水体作用于桥墩有限节点上的动水力表达。于是,得到由梁单元有限元方法形成的矩形空心墩桥梁结构与水耦合振动的运动方程。与纯数值方法相比,这一方法计算相对简单、有效,可求解结构整体响应。算例表明,该方法计算具有较高精度。
A semi-analytical and semi-numerical approach for earthquake induced hydrodynamic force on elastic rectangular hollow bridge pier was developed.Based on linear radiation wave theory,the interior and exterior hydrodynamic forces on pier were got by eigenfunction expansion method.The coupling kinetic equations were solved by FEM with beam elements.This method is a relatively simple and efficient approach.Examples were presented to illustrated the accuracy of this method.

引文

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