摘要
自复位钢板剪力墙是将后张拉节点和薄钢板剪力墙相结合而构成的一种新型抗侧力体系。后张拉梁柱节点和柱脚节点提供复位能力,减小结构震后残余变形,内填钢板则是主要的抗侧力元件和耗能元件。地震后通过更换钢板可使结构恢复正常使用功能。建立了自复位钢板剪力墙有限元模型进行水平加载分析,研究了内填钢板和边缘框架的相互作用,以及内填钢板的厚度和跨高比对自复位钢板剪力墙强度、刚度、滞回性能及耗能能力的影响。分析结果表明,自复位钢板剪力墙的塑性变形发生在内填钢板上,边缘构件保持弹性以提供复位能力。随着钢板厚度和跨高比增大,自复位钢板剪力墙的强度、刚度、耗能能力增大,但残余变形也随之增大。自复位钢板剪力墙的复位刚度与钢板厚度无关,但随着跨高比的增大而减小。
Self-centering steel plate shear wall（SC-SPSW）is a new lateral load-resisting system,composed of post-tensioned connections and steel plate shear wall.The SC-SPSW system utilizes thin steel web plate to provide lateral load resistance and energy dissipation,and then self-centers the building by post-tensioned beam-to-column connections and column base connections.SC-SPSW is developed for reducing the loss of building functionality after an earthquake by controlling structural damage to some replaceable thin steel plate.In this paper,a number of SC-SPSW finite element models are conducted and numerically analyzed under lateral loading.The nonlinear response of SC-SPSW system with regard to the interaction between the infill plate and edge members is studied.The effects of thicknesses and aspect ratios of infill plates on the strength,stiffness,hysteretic and dissipation capacities of SC-SPSWs are evaluated.Results show that plastic deformations are provided by the infill plate,and the edge members remain elastic to provide selfcentering capability.It is illustrated that with an increasing thicknesses and aspect ratios of infill plates,the strength,stiffness and energy dissipation capacities of SC-SPSW are enhanced,but the residual deformation increases as well.The self-centering stiffness of SC-SPSW is irrelevant with the thickness of infill plate,but decreases with the increase of aspect ratio of infill plate.
作者
罗小奇
陈麟
吴珊瑚
LUO Xiaoqi;CHEN Lin;WU Shanhu(School of Civil Engineering, Guangzhou University, Guangzhou 510006, China)
出处
《建筑钢结构进展》
CSCD
北大核心
2018年第1期23-31,共9页
Progress in Steel Building Structures
基金
广东省自然科学基金(8351009101000001)
广州市珠江科技新星专项(2011J2200023)
关键词
自复位
钢板剪力墙
后张拉节点
残余变形
抗震性能
self-centering
steel plate shear wall
post tensioned connection
residual deformation
seismic behavior
