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。内填钢板只与钢梁连接可以减小对边框柱的需求,消除节点开口在钢板角部的应力集中,从而避免了钢板角部撕裂。建立自复位两边连接钢板剪力墙有限元模型进行水平加载分析,研究内填钢板和边缘框架的相互作用,并与自复位四边连接钢板剪力墙的工作性能进行对比分析。分析结果表明,与自复位四边连接钢板剪力墙相比,钢板两边连接的自复位钢板墙具有更好的复位能力,但强度、刚度和耗能能力较小。
Self-centering steel plate shear wall（ SC-SPSW） is a new lateral load-resisting system composed of posttensioned connections and steel plate shear wall. The SC-SPSW system utilizes thin steel web plate to provide lateral load resistance and energy dissipation,while recenters the building by post-tensioned beam-to-column connections and column base connections to reduce the residual drift. Connecting the web plate to the frame beams only can reduce frame columns demands and mitigate web plate damage by eliminating the stress concentration on web plate corners due to the post-tensioned connections rock openings. The finite element model of SC-SPSW with beam-connected web plates was conducted and numerically analyzed under lateral loading. The interaction between the infill plate and frame members was studied. The behavior of the SC-SPSWs with beam-connected and fully-connected web plates was compared by using the results of nonlinear analysis. The results showed that SC-SPSW with beam-connected web plates had better recentering capacity,but smaller strength,stiffness and energy dissipation capacities than fully-connected SC-SPSW.
出处
《钢结构》
北大核心
2017年第3期7-12,共6页
Steel Construction
基金
广东省自然科学基金团队项目(8351009101000001)
广州市珠江科技新星专项项目(2011J2200023)
关键词
自复位
钢板剪力墙
后张拉节点
残余变形
耗能
self-centering
steel plate shear wall
post-tensioned connection
residual deformation
energy dissipation
