考虑几何参数影响的联肢剪力墙抗震性能研究  

Seismic Performance of Coupled Shear Walls Considering the Influence of Geometric Parameters

作　　者：邓又民 付俊杰[2] 伍云天[2,3] 何飞 DENG Youmin;FU Junjie;WU Yuntian;HE Fei(Shenzhen Capol International&Associates Limited Changsha Branch,Changsha 41000,China;School of Civil Engineering,Chongqing University,Chongqing 400045,China;Key Laboratory of New Technology for Construction of Cities in Mountain Area,Ministry of Education,Chongqing University,Chongqing 400045,China;Capol International&Associates(Hunan)Limited,Changsha 410000,China)

机构地区：[1]深圳市华阳国际工程设计股份有限公司长沙分公司,长沙410000 [2]重庆大学土木工程学院,重庆400045 [3]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400045 [4]华阳国际工程设计(湖南)有限公司,长沙410000

出　　处：《结构工程师》2023年第1期61-70,共10页Structural Engineers

摘　　要：耦联比是反映联肢剪力墙墙肢与连梁的耦合作用程度的重要参数。然而,耦联比与结构体系的非线性特征高度相关,导致在结构初步设计阶段难以确定。因此,有必要引入在初步设计阶段即可方便确定的其他参数。本研究采用连梁跨高比和墙肢高宽比来代替耦联比,设计了9个联肢剪力墙原型结构,利用增量动力分析方法,研究了连梁跨高比和墙肢高宽比对钢筋混凝土联肢剪力墙地震易损性特征和极限承载力的影响。采用双因子二次响应面法进一步揭示了连梁跨高比和墙肢高宽比的组合对联肢剪力墙整体性能的影响,得到响应变量的最优值,并利用曲线拟合找出连梁跨高比和墙肢高宽比最优关系。结果表明,连梁跨高比和墙肢高宽比可以有效地作为耦联比的补充,在初步设计阶段作为衡量钢筋混凝土联肢剪力墙的整体抗震性能的参数。Coupling ratio(CR)has been widely used to reflect the coupling degree of shear wall and coupling beam.However,the parameter CR is highly related to the nonlinear characteristics of the structural system,which is thus difficult to determine at the preliminary design stage.Therefore,it is necessary to introduce other parameters,which can be easily determined at the preliminary design stage.In this study,the span to depth ratioαb of the coupling beam and the height to width ratioαw of the wall pier are used to replace CR as the seismic design parameters at the preliminary design stage,and nine prototype structures are designed.The influence ofαb andαw on seismic vulnerability and ultimate load carrying capacity of RC coupled walls is studied by using incremental dynamic analysis method.The influences ofαb andαw on the overall behavior of the coupled shear wall are further revealed by the double factor quadratic response surface method.The optimal relationship betweenαb andαw was found by curve fitting.The results show thatαb andαw can be used as the alternative parameters to CR to ensure the optimal overall performance of RC coupled walls.

关 键 词：耦联比 连梁跨高比 墙肢高宽比 增量动力分析法 响应面法 

分 类 号：TU398.2[建筑科学—结构工程] TU352.11