RC框架弹塑性位移的解构规则与构件的目标侧移角  

RULES OF ELASTOPLASTIC DRIFT DECOMPOSITION OF RC FRAMES AND THE TARGET DRIFT OF MEMBERS

作　　者：罗文斌[1] 钱稼茹[1] 

机构地区：[1]清华大学土木工程系,北京100084

出　　处：《工程力学》2003年第5期32-36,共5页Engineering Mechanics

基　　金：国家自然科学基金重大项目(59895410)

摘　　要：研究了RC框架在弹塑性状态下层间位移与构件变形之间的关系。引入塑性变形分布因子作为参数,建立了框架节的塑性变形分布因子与位移延性系数、强柱系数之间的关系,即chmcd--关系;在此基础上,提出了RC框架弹塑性位移的解构规则,可用于求解构件的目标侧移角,从而实现了基于位移设计的关键一步。Relations between the elastoplastic inter-story drift of frame and the deformation of members are studied. Introducing the plastic deformation distribution factor χ as a parameter, the relations among χ, displacement ductility ratio μδ and column overstrength factor ηc, namely χ-μδ-ηc equations, are presented. Furthermore, the rules of drift decomposition are developed. By decomposing the drift demand, the target deformability of beams and columns are determined, which is a key step of the displacement-based design.

关 键 词：结构工程 抗震 理论与分析 基于位移的设计 RC框架节 位移解构 目标侧移角 

分 类 号：TU375[建筑科学—结构工程]