摘要
本文用沿高度方向分段连续化的方法,对底部为大底盘、上部为多塔楼的高层建筑结构,建立了其水平振动的微分方程组.用常微分方程求解器COLSYS求解其自振频率及相应的振型,讨论了其振动的特性,为复杂结构提供了一种可用于设计的动力计算简化方法.
In this paper, firstly using the commonly used continuum technique for multi-towers with enlarged base in the lower floors, a new piecewise continuous vibrational model is established. Then, the vibrational differential equations for the model have been derived. Secondly, using the ODE (Ordinary Differential Equation) solver, which is a general-purpose program developed for solving various ODE problems including eigen value problem, the natural frequencies and vibrational modes have been obtained, and the dynamical behaviours for different parameters are discussed.
出处
《建筑结构》
CSCD
北大核心
1996年第6期3-9,共7页
Building Structure
基金
国家自然科学基金
关键词
高层建筑结构
大底盘
多塔楼
水平振动
tall building structure
multi-towers
enlarged base
horizontal vibration
dynamical behaviours