钢筋混凝土剪力墙的变形能力及基于性能的抗震设计  

Deformation capacity and performance-based seismic design for reinforced concrete shear walls

作　　者：黄志华[1] 吕西林[1] 周颖[1] 

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

出　　处：《地震工程与工程振动》2009年第5期86-93,共8页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(9081502950708071)

摘　　要：影响钢筋混凝土剪力墙变形能力的主要因素包括高宽比r、轴压比n、边缘约束构件约束程度等。本文首先建立了钢筋混凝土剪力墙端部约束构件的配箍特征值λvw、轴压比n、高宽比r与剪力墙极限位移Δuw之间的关系,即λvw-n-r-Δuw关系,然后通过7个研究机构所进行的钢筋混凝土剪力墙试验对该关系进行了验证。在此关系的基础上,本文提出了钢筋混凝土剪力墙基于性能的抗震设计方法。根据本文方法,设计者可以在已知层间位移角需求θ及确定损伤指标Dw的情况下对剪力墙端部约束构件进行配箍。本文最后通过一算例详细介绍了该方法的设计过程。Deformation capacity of reinforced concrete shear walls is mainly influenced by wall aspect ratio r, axial force ratio n and concrete confinement at the boundaries of shear walls. In this paper, the relationship among the confining reinforcement characteristic value ,λ vw, the axial force ratio n, the wall aspect ratio r and the ultimate displacement A △nw is established firstly. Then, the relationship in form of λvw-n-r-△uw is verified by the RC shear wall experiments, which were conducted by 7 research institutions. Based on the relationship, the performance - based seismic design method for RC shear walls is put forward. According to the method proposed in the paper, the transverse reinforcement at wall boundaries could be assessed, if the inter-story drift demand θ and the damage index Dw are known. At the end of the paper, an example is illustrated to explain the method in detail.

关 键 词：钢筋混凝土剪力墙 变形能力 基于性能的抗震设计 

分 类 号：P315.95[天文地球—地震学]