高层建筑框架结构与基础地基共同工作的半解析自由振动分析  

Analysis on Free Vibration by Semi-analytical Approach for Collaboration of Frame Structure of Tall Building and Foundation

作　　者：谢向东[1] 

机构地区：[1]襄樊学院建筑工程学院,湖北襄阳441053

出　　处：《襄樊学院学报》2012年第2期5-8,共4页Journal of Xiangfan University

基　　金：襄樊学院博士基金项目

摘　　要：将高层建筑框架结构与其基础等效连续化为一个半无限大弹性地基上的闭口薄壁筒体,并以此三维模型,用半解析法对其动力特性进行计算.计算结果表明:简化模型合理,分析方法正确,为高层建筑框架结构的自由振动计算提供了一种合理可行的简化计算方法,并得出了一些结论.In the paper,the superstructure and its foundation of a tall building frame structure are simplified equivalently and continuously to a three-dimensional model,which is a combination of thin-wall tubes on semi-infinite elastic subgrade.And its dynamic characteristics are computed with the three-dimensional model by semi-analytical approach based on ODE（Ordinary Differential Equation） Solver.It is observed from the computing example that the new method is reasonable and feasible,At the same time,some valuable conclusions are obtained through analyzing the reasonable results of the numerical example.

关 键 词：高层建筑 框架结构 自由振动 闭口薄壁筒 半解析法 

分 类 号：TU973[建筑科学—结构工程]