基于能量原理的Park＆Ang损伤模型简化计算方法  

A simplified method for computing Park & Ang damage model based on energy concept

作　　者：杨伟[1] 欧进萍[1,2] 

机构地区：[1]哈尔滨工业大学深圳研究生院城市与土木工程学科部,广东深圳518055 [2]大连理工大学土木水利学院,辽宁大连116024

出　　处：《地震工程与工程振动》2009年第2期159-165,共7页Earthquake Engineering and Engineering Dynamics

基　　金：国家973项目课题(2007CB714202)

摘　　要：Park&Ang损伤模型综合考虑了结构最大变形和累积滞回耗能的耦合作用,具有一定的先进性,被国内外研究者广泛采用;但由于该模型中参数的计算困难,尤其涉及结构滞回耗能的计算问题时,该模型的应用受到了一定的限制;文中从能量的关系入手,寻找出结构滞回耗能与结构最大位移的关系,利用该关系可方便求解出结构的滞回耗能,从而为该模型的计算提供了一种简便方法;最后,例题分析证明本文的方法简便可行,计算效率高。Park ＆ Ang damage model considers both the effects of maximum inelastic displacement and the effects of cumulative hysteretic energy, which is widely used in the world. But some difficult problems arise when computing the parameters of the model, especially when computing the hysteretic energy. A simplified method based on energy concept is found to compute the hysteretic energy, which can be obtained from the relation between hysteret- ic energy and maximum displacement. Finally, examples show the method is feasible and convenient .

关 键 词：损伤模型 能量方程 滞回耗能 最大位移反应 

分 类 号：TU311[建筑科学—结构工程] P315.95[天文地球—地震学]