剪切型结构地震响应的多刚体离散分析方法  

A Discrete Analysis Method of Multi-Rigid-Body Model for Earthquake Response of Shear-Type Structures

作　　者：赖明[1] 李英民[1] 

机构地区：[1]重庆建筑大学

出　　处：《建筑结构学报》1994年第6期17-24,共8页Journal of Building Structures

基　　金：霍英东教育基金;国家自然科学基金

摘　　要：本文将多刚体系统动力学理论应用于剪切型结构的地震响应分析中，建立了剪切型结构的多刚体离散模型，导出了求解剪切型结构地震响应的动力学方程，指出这一方程具有与传统变形体有限元方法相类似的形式，可用一般的数值方法（本文采用Ｗｉｌｓｏｎ－θ法）求解。据此，本文编制了剪切型结构地震响应的分析程序，以实际震害中倒塌的两栋钢筋砼框架结构房屋为例进行了非线性时程分析，计算结果与震害一致。初步的研究表明，多刚体离散分析方法在建筑结构地震响应的分析中具有良好的应用前景。The theory of multi-rigid-body is used in this paper for analyzing earthquake response of shear-type structures. The multirigid-body discrete model for shear-type structure is first developed and the yi bration equation for earthquake response of structure is derived. It is found that the vibration equation of this method is similar to that of the traditional finite element method in formulation, and the equation can be solved by the ordinary numerical methods. A computer program for earthquake response analysis of shear-type structure has been developed on the basis of multi-rigid-body model, and it has been used to analyze the nonlinear responses of two reinforced concrete frames collapsed in Tangshan earthquake. The analytical results agree well with those due to the actual earthquake damage: In comparison with other approaches, the multi-rigid-body model is simple and reliable. It has good prospects of application to more widely used structures such as bending-type and shear--bending-type structures.

关 键 词：混凝土 剪切型结构 地震响应 多刚体离散分析 

分 类 号：TU375.401[建筑科学—结构工程]