自复位两边连接梯形波纹钢板剪力墙滞回性能分析  

Hysteretic Behavior Analysis of Self-Centering Trapezoidal Corrugated Steel Plate Shear Wall with Beam-Only Connected Web Plates

作　　者：谭志伦 赵秋红[1,2] Tan Zhilun;Zhao Qiuhong(School of Civil Engineering,Tianjin University,Tianjin 300350,China;Key Laboratory of Coast Civil Structure Safety of Ministry of Education,Tianjin University,Tianjin 300350,China)

机构地区：[1]天津大学建筑工程学院,天津300350 [2]天津大学滨海土木工程结构与安全教育部重点实验室,天津300350

出　　处：《天津大学学报（自然科学与工程技术版）》2022年第12期1262-1274,共13页Journal of Tianjin University：Science and Technology

基　　金：国家自然科学基金资助项目(51878447,51678406);天津市研究生科研创新项目(2020YJSB084).

摘　　要：本文提出了一种自复位两边连接梯形波纹钢板剪力墙结构,包括自复位钢框架与内嵌梯形竖波纹钢墙板,其中墙板仅与梁上下连接,以方便装配化施工.采用通用有限元软件ABAQUS建立了单层单跨自复位梯形波纹钢板剪力墙的有限元模型,并进行非线性滞回分析,以研究墙板连接形式、墙板波形及框架预应力水平对结构滞回性能和复位性能的影响.结果表明:自复位两边连接梯形波纹钢板剪力墙可有效耗散地震能量,控制震后残余侧移,且侧边加劲时两边连接墙板的承载力、耗能能力及残余侧移与角部切角时四边连接墙板基本相当.随着厚度的增加,两边连接波纹墙板的抗侧模式由剪切屈曲向剪切屈服转变,结构承载力及单位板厚的耗能能力显著增加,当板厚从3 mm增至9 mm时增幅分别为40%和50%,但结构残余侧移亦显著增加,2%侧移角下的残余侧移角可能超过规范可修限值的0.5%.随着波纹墙板波折角或波长的减小,结构残余侧移可有效降低,但结构承载力及耗能能力亦有所降低,最高可分别达30%和60%.另一方面,随着预应力筋的初始预应力增加50%,结构承载力增加13%,最大残余侧移角显著降低,由0.80%减小到0.35%,而耗能能力基本不变.随着预应力筋面积的增加,结构承载力增加,但残余侧移和耗能能力基本不变.因此,两边连接波纹墙板的屈曲及抗侧模式对自复位波纹钢板剪力墙结构滞回和复位性能的影响较为明显,且与传统波纹钢板剪力结构不完全一致,自复位两边连接波纹钢板剪力墙初期设计时应综合考虑墙板波形与框架预应力水平对结构滞回及复位性能的影响,使结构充分发挥承载力和耗能能力,并有效控制震后残余侧移.This paper proposes a self-centering trapezoidal corrugated steel plate shear wall structure with beam-only connected web plates,including a self-centering steel frame and embedded trapezoidal vertical corrugated steel wall panels.The wall panels are connected only to the beams to facilitate assembly construction.The general finite element software ABAQUS is used to establish a three-dimensional finite element model of a single-layer single-span selfcentering trapezoidal corrugated steel plate shear wall and perform nonlinear hysteresis analysis to investigate the influence of wall panel connection form,wall panel waveform,and the prestress level of the structure on the hysteretic and recentering performances.The results show that the self-centering trapezoidal corrugated steel plate shear wall connected on beam only can effectively dissipate the seismic energy and control the residual drift after an earthquake.When the lateral side is stiffened,its bearing capacity,energy dissipation capacity,and residual drift are relatively equal with the self-centering corrugated steel plate shear wall with web plates in which a corner is cut out and connected with beam and column.With increasing thickness,the lateral resistance mode of the corrugated steel plate shear wall connected on beam only changes from shear buckling to shear yield,and the structural bearing capacity and energy dissipation capacity per unit thickness increase significantly.When the thickness increases from 3mm to 9mm,the amplitude is 40%and 50%,respectively.Notably,however,the residual drift of the structure also sig-nificantly increases to 0.5%above the repairable limit.With the reduction of the corrugation angle or wavelength of the corrugated wall panel,the residual drift of the structure can be effectively reduced.However,the bearing and energy consumption capacities of the structure are reduced,and the maximum drop can reach 30%and 60%,respectively.Alternatively,as the initial prestress of the post-tensioned tendons is increased by 50%,the structu

关 键 词：自复位梯形波纹钢板剪力墙 两边连接 滞回分析 有限元参数分析 抗震性能 

分 类 号：TU391[建筑科学—结构工程]