大底盘多塔楼连体结构的振动计算和动力特性  

Vibrational Analysis of Multi-tower Structure Linked by Spatial Corridors and with Enlarged Base at the Bottom

作　　者：包世华[1] 王建东[2] 

机构地区：[1]清华大学土木系,北京100084 [2]河北省建筑设计研究院,石家庄050011

出　　处：《建筑结构》1997年第6期40-44,共5页Building Structure

基　　金：国家自然科学基金;河北省建委系统资助项目

摘　　要：用沿高度方向分段连续化的方法,对底部为大底盘、上部为多塔楼、塔楼间带连廊的高层建筑结构,建立一个分段连续的串并联振动模型,导出其水平振动的弯扭耦连振动微分方程组,用常微分方程求解器COLSYS求解其自振频率及相应的振型.讨论了连廊不同刚度时的振动特性.为复杂结构提供了一种可用的动力计算简化方法.Using the commonly used continuum technique for multi-tower structure linked by spatial corridors and with enlarged base at the bottom, a new piecewise continous series-parallel vibrational model is established. Then, the vibrational differential equations for the model are derived. Moreover, using the ODE (Ordinary Differential Equation) solver, which is a general-purpose program developed for solving vari ous ODE problems including eigen-value problem, the natural frequencies and vibrational modes are obtained, and the dynamical behaviors for different parameters are discussed.

关 键 词：底盘 塔楼 水平振动 高层建筑 结构分析 

分 类 号：TU973.2[建筑科学—结构工程]