直接基于位移的橡胶支座基础隔震剪力墙结构设计方法  

Direct displacement-based design of rubber isolator base-isolated RC shear wall structures

作　　者：王维[1] 王星星[1] 王冬梅 裴星洙[1] WANG Wei;WANG Xingxing;WANG Dongmei;PEI Xingzhu(School of Civil Engineering and Architecture,Jiangsu University of Science and Technology,Zhenjiang 212003,China)

机构地区：[1]江苏科技大学土木工程与建筑学院,镇江212003

出　　处：《江苏科技大学学报（自然科学版）》2018年第4期609-616,共8页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：国家自然科学基金资助项目(51708257;51708258);江苏科技大学人才引进项目(1122931605)

摘　　要：提出设置橡胶支座的基础隔震剪力墙结构(BRSW结构)直接基于位移的设计方法(DDB设计方法),该设计方法以橡胶隔震支座的水平位移和上部剪力墙结构的最大层间位移角作为性能参数,同时考虑了橡胶隔震支座和上部剪力墙结构的非线性.文中首先给出了DDB设计方法的基本假定和BRSW结构在不同地震水平下的性能目标;然后给出了DDB设计方法的设计步骤和设计实例;最后利用非线性动力弹塑性时程分析方法验证了DDB设计方法的有效性.研究结果表明,以抗震设计规范(GB50011-2010)的位移反应谱为基础,DDB设计方法的结果为非线性动力弹塑性时程分析方法结果的近似包络值,DDB设计方法是一种偏于保守的设计.A direct displacement-based design(DDBD)procedure for base-isolated RC shear wall structure(BRSW structure)is proposed,in which flexibility of rubber isolator and super RC shear wall are suitably accounted for.First of all,the model assumption of the DDBD procedure is presented,and the key parameters,maximum shear strain of rubber isolator and maximum interstory drift of superstructure,are defined to attain the performance objectives for each given earthquake intense.Then a step-by-step design procedure is proposed,followed by a case study.At last,time-history analysis(THA)of the designed BRSW structure is carried out to validate the proposed DDBD methodology.The analysis results indicate that,based on the displacement spectrums in Code for seismic design of buildings(GB50011-2010),the results of the DDBD methodology are almost envelopes of the THA results;therefore DDBD methodology is a conservative design.

关 键 词：直接基于位移的设计方法 性能目标 基础隔震 钢筋混凝土剪力墙 橡胶隔震支座 

分 类 号：TU352.[建筑科学—结构工程]