半刚接钢框架内填RC墙结构简化分析模型  

SIMPLIFIED FE MODEL OF PARTIALLY-RESTRAINED STEEL FRAME WITH RC INFILL WALLS

作　　者：孙国华[1,2] 顾强[2] 何若全[1,2] 方有珍[2] 申林 

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]江苏省结构工程重点实验室(苏州科技学院),江苏苏州215011 [3]中国建筑标准设计研究院,北京100044

出　　处：《工程力学》2012年第2期149-158,共10页Engineering Mechanics

基　　金：国家自然科学基金项目(50378058)

摘　　要：该文提出了一种用于分析半刚接钢框架内填RC墙结构（简称PSRCW）滞回性能的简化分析模型（即斜向板带模型）,基于混凝土应力-应变关系给出了斜向板带的轴力-位移关系曲线,采用Pivot塑性滞回模型模拟斜向板带的力学行为。采用有限元方法分析了板带恢复力模型、板带数量及倾角对PSRCW结构斜向板带模型的影响,结果表明Pivot塑性滞回模型可较好地模拟斜向板带的滞回性能,可采用7条以上板带及40°~50°之间板带倾角描述PSRCW结构的整体性能。应用该简化模型对有关试件进行了滞回性能模拟,并与试验结果比较,两者吻合良好。A simple inclined strip model for analyzing the hysteretic behavior of partially-restrained steel frame with reinforced concrete walls（PSRCW） is presented.The axial force vs displacement of inclined strip is derived according to the constitutive relationship of concrete,and the hysteretic rules of inclined strips is determined through multi-linear plastic pivot of non-linear link element.The main parameters of PSRCW are analyzed,including mechanical model,quantity and inclined angles of strips.The results demonstrate that multi-linear plastic pivot can be used to simulate the hysteretic behavior of inclined strip,and more than seven strips and an inclined strip angle of 40-50 degree are suggested.The comparison between the results of calculation and those of corresponding tests shows good agreement.

关 键 词：半刚接钢框架 内填墙 滞回性能 有限元法 板带模型 

分 类 号：TU398.2[建筑科学—结构工程]