结构弹塑性折减系数法的研究  

A Study of Reduction Factor Methods for Elastoplastic Analysis of Structures

作　　者：马英展 刘文锋[2] 付兴潘[2] 

机构地区：[1]青岛筑原建筑设计事务所,青岛266022 [2]青岛理工大学土木工程学院,青岛266033

出　　处：《青岛理工大学学报》2008年第2期27-31,35,共6页Journal of Qingdao University of Technology

基　　金：山东省教育厅科技计划项目(J07YA09-2)

摘　　要：折减系数法是估算结构最大弹塑性反应的近似方法.折减系数法中,体系通过折减系数Ry、位移延性系数μ与周期Tn的Ry-μ-Tn关系式得出位移修正系数C,既而得出体系最大弹塑性位移.通过列举3种折减系数法——Newmark-Hall方法、Krawinkler-Nassar方法以及Vidic,Fajfar和Fischinger方法,对其Ry-μ-Tn关系式进行了对比研究,并选择10条地震波进行弹塑性时程分析,对3种方法得出的弹塑性位移结果进行了比较.Reduction factor metho sponse of structur reduction factor R cation factor C of es. In the reduc y, displacement ds are the practical methods to estimate the maximum elastoplastic retion factor methods, through the Ry-μ-Tn relationships composed of ductility factor μ, and period Tn of structures, the displacement modifi- structures can be computed, then the maximum inelastic displacement of structures can also be got. Three reduction factor methods are presented-the method by Newmark-Hall. the method by Krawinkler-Nassar,the method by Vidic, Fajfar and Fischinger. The Ry-μ- Tn relationships are compared and studied. 10 seismic waves are selected and the analysis of elastoplastic time history is proceeded to compare the inelastic displacement for each method.

关 键 词：弹塑性结构 折减系数 延性系数 位移 

分 类 号：TU311.4[建筑科学—结构工程] TU313.3