【作者】 李楠；

【导师】 赵秋红； 王湘安；

【作者基本信息】 天津大学 ， 建筑与土木工程（专业学位）， 2017， 硕士

【摘要】 非加劲钢板剪力墙体系在国外的工程领域中是常用的抗震体系。波纹钢板剪力墙作为一种新型抗震体系,有望改善非加劲钢板剪力墙易发生弹性屈曲,屈曲后抗侧刚度较小以及施工时为避免重力屈曲而延迟安装影响工期等问题。现有的波纹钢板剪力墙抗震性能方面的研究极少,尤其是大比例尺的模型试验研究在国外仅有一例,国内仅有两例,且均为单层模型试验。因此,本文通过试验研究与有限元模拟相结合的方法,针对波纹钢板剪力墙体系在低周往复荷载作用下的抗震性能,主要进行了以下研究:(1)进行建筑抗震设计,采用基于承载力的钢板剪力墙设计方法,完成本文中试件的设计工作。(2)对4个1:3比例尺的双层模型试件(非加劲钢板剪力墙试件、横向浅波纹钢板剪力墙试件、横向深波纹钢板剪力墙试件和竖向深波纹钢板剪力墙试件)进行低周往复加载试验,分析了不同内嵌钢板对结构抗震性能的影响。(3)使用有限元分析软件ABAQUS对试验进行数值模拟,验证有限元方法在波纹钢板剪力墙研究中的准确性,分析了内嵌钢板厚度和高宽比的变化对结构承载力的影响。试验结果表明:非加劲钢板剪力墙表现出较高的承载力以及延性,耗能能力较强。同时,暴露出滞回曲线捏拢、屈曲噪声大、屈曲后刚度退化严重等缺陷。波纹钢板剪力墙在加载前期基本不发生面外变形,内嵌钢板可以通过四边抗剪的抗侧承载方式达到屈服,试件滞回环饱满,表现出优于非加劲钢板剪力墙的耗能能力;在加载中后期,内嵌钢板应力分布不均匀,其承载力和刚度退化现象较非加劲钢板剪力墙更为明显,但仍然达到了6以上的延性系数,不失为一种具有优秀抗震性能的抗侧力体系。有限元模拟结果可以比较精确地模拟试件在低周往复荷载作用下的力学性能,同时全面揭示了波纹钢板剪力墙试件中的应力发展和变形过程,对波纹钢板剪力墙在工程中的应用和推广提供初步设计建议。更多还原

【Abstract】 The unstiffened steel plate shear wall(SPSW)system is a commonly used seismic system in the overseas engineering field.Corrugated steel plate shear wall(CoSPSW)is a new type of seismic system,is expected to improve the SPSW which is prone to elastic buckling and delay installation in construction to avoid buckling under gravity affect,and has small lateral post-buckling stiffness.There are few studies on the seismic performance of the CoSPSW.Especially for the large scale model test study,there is only one case abroad and two cases in China.In this thesis,seismic behavior under low cyclic loading of CoSPSW is researched by test and finite element methods.The main research works are as follows:(1)In this paper,the design method of steel plate shear wall based on bearing capacity is used to carry out the seismic design of the prototype building.(2)The effects of different panels on the seismic behavior of the 4 two-story specimens(unstiffened SPSW,horizontal shallow CoSPSW,horizontal deep CoSPSW and vertical deep CoSPSW)with 1:3 scales are analyzed.(3)The finite element analysis software ABAQUS is used to simulate the experiment.The accuracy of the finite element method in the study of CoSPSW is verified.The influences of the thickness and the height width ratio of the panel on the bearing capacity of the structure are analyzed.The test results of tests indicate that unstiffened SPSW shows high bearing capacity and ductility,energy dissipation capacity is stronger.At the same time,the defects such as the pinch of the hysteresis curve,the buckling noise and post-buckling stiffness degradation are exposed.In the early stage of loading,the CoSPSW does not have the out-of-plane deformation basically.After the panels yield by shear load,specimen hysteresis loops become full and show better energy dissipation capacity than unstiffened SPSW.In the later stage of loading,the stress distribution of the panels is not uniform,and then the degradation of bearing capacity and stiffness is more obvious than the SPSW.However,the ductility factor of CoSPSW is over 6 and the CoSPSW can be regarded as a kind of lateral force resisting system with excellent seismic performance.Finite element simulation results are in agreement with the experimental results,which show that the finite element method can accurately simulate the mechanical properties of the specimens under low cyclic loading.The finite element results can reveal the stress development and displacement process of the CoSPSW.Preliminary suggestions for the application and popularization of the CoSPSW are provided.更多还原