不均匀剪切型层模型结构基于能量概念的弹塑性地震位移反应分析  

INELASTIC SEISMIC DISPLACEMENT RESPONSE ANALYSIS OF NON - UNIFORM SHEARING LUMPED MASS MDOF STRUCTURE BASED ON ENERGY CONCEPT

作　　者：经杰[1] 叶列平[1] 钱稼茹[1] 

机构地区：[1]清华大学

出　　处：《土木工程学报》2003年第12期14-19,共6页China Civil Engineering Journal

基　　金：国家自然科学基金(59895410)

摘　　要：采用能量概念能更清楚地揭示结构抗震性能的本质。首先介绍了基于能量概念的结构抗震设计有关研究状况。同时根据地震作用下不均匀剪切型层模型结构的弹性和弹塑性时程分析结果,研究了能量在其楼层间分布的特点,给出了楼层能量集中的规律及相关影响因素。并采用等往复振动能量准则建议了能量集中楼层的弹塑性位移计算方法。It is much clearer to reveal the essential of structural seismic behavior using the concept of energy. First of all, the corresponding conditions for the study of the structural seismic design based on energy concept are introduced. Meanwhile, according to the results from the elastic and inelastic time - history analysis of the nonuniform shearing lumped mass MDOF structure under seismic action, that the distinguishing feature of the energy distribution between storeys has been studied, hence the regularity of energy concentration and related influence factors in the storey are given. Based on the equal cyclic energy criterion of vibration , the computation method of inelastic displacement at the energy concentrated storey of the structure is suggested.

关 键 词：层模型结构 能量 弹塑性位移 地震 

分 类 号：TU352[建筑科学—结构工程]