型钢混凝土剪力墙基于性能的有害层间位移角限值研究  

Study on Performance Based Inter-Story Harmful Drift Limits of Steel Reinforced Concrete Shear Walls

作　　者：李莹辉[1,2,3] 蒋欢军 LI Yinghui;JIANG Huanjun(State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China;College of Civil Engineering,Tongji University,Shanghai 200092,China;East China Architectural Design and Research Institute Co.,Ltd.,Shanghai 200011,China)

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092 [2]同济大学土木工程学院,上海200092 [3]华东建筑设计研究院有限公司,上海200011

出　　处：《结构工程师》2020年第3期19-27,共9页Structural Engineers

基　　金：上海市优秀学术带头人计划项目(18XD1403900)

摘　　要：剪力墙结构在地震作用下墙肢底部塑性发展区的高度并不一定等于结构层高,若以塑性发展区的转角限值作为剪力墙结构的层间有害位移角限值,可能导致不准确的结果.本文提出在计算型钢混凝土剪力墙层间有害位移角限值时,应考虑层高与墙肢长度比值的影响.根据型钢混凝土剪力墙的损伤破坏特征及抗侧承载力下降程度,提出其抗震性能等级的划分方法.结合经过验证的三维有限元模型分析,得到不同性能等级的型钢混凝土剪力墙有害层间位移角的限值.分析了不同设计参数对不同性能等级的型钢混凝土剪力墙位移角限值的影响,并拟合位移角限值的计算公式.得到了不同性能等级位移角限值的统计特征值,为型钢混凝土剪力墙结构基于性能的抗震设计与分析提供参考.In shear wall structures,the plastic zone height of wall pier developed during earthquake motions is not always equal to the story height.If the drift limits of plastic zone are used as the inter-story harmful drift limits of shear wall structures,inaccurate results may be obtained.In this research,effects of story height to wall length ratio on inter-story harmful drift limits of steel reinforced concrete shear walls were studied.Based on damage characteristics and lateral load resistance capacity deterioration of steel reinforced concrete shear walls,a method to classify performance levels was proposed.Through a large number of parametric analyses of verified three dimensional finite element models,inter-story harmful drift limits of steel reinforced concrete shear walls at different performance levels were obtained.Effects of design parameters on the drift limits at different performance levels were analyzed and calculation formulae for the drift limits were derived by a fitting method.In addition,statistical values of drift limits at different performance levels were also obtained.This study provides a reference for performance-based seismic design and analysis of steel reinforced concrete shear wall structures.

关 键 词：型钢混凝土剪力墙 位移角限值 有害层间位移角 三维有限元 塑性区 

分 类 号：TU398.2[建筑科学—结构工程]