桁架式多腔体钢板组合剪力墙与H型钢梁连接节点抗震性能研究

RESEARCH ON SEISMIC BEHAVIOR OF CONNECTIONS BETWEEN DOUBLE-SKIN MULTI-CAVITY OF COMPOSITE WALL WITH STEEL TRUSS AND H-SHAPED STEEL BEAM

基于桁架式多腔体钢板组合剪力墙的构造特点,提出了4类不同构造的桁架式多腔体钢板组合剪力墙与H型钢梁节点,针对性地设计了4个代表性的桁架式多腔体钢板组合剪力墙与H型钢梁节点足尺模型(标准节点、盖板节点、立板节点和全板节点),采用有限元软件ANSYS对试件进行三维非线性有限元模拟。结果表明:4个节点最终在竖向外肋板端部钢梁翼缘开裂而破坏,均能实现"塑性铰外移"的预期目标;滞回曲线均呈饱满的梭形,抗震性能良好,因此所提出的节点满足GB 50011-2010《建筑抗震设计规范》的设计要求,可以在桁架式多腔体钢板组合剪力墙结构中应用。

Based on the construction features of double-skin multi-cavity composite walls with steel truss,four new different configurations of the double-skin multi-cavity composite wall with steel truss to H-shaped steel beams connections proposed,so as to design four full-scale wall-beam joints (standard joint,cover-plate joint,vertical-plate joint and binding-plate joint). The finite element analysis( FEA) of specimens was carried out by using ANSYS software. The results showed that the four joints eventually cracked and failured at the flanges steel beam at the end of external plate,and could achieve the expected goal of shift-away of plastic hinge. The hysteresis loops were plump,which indicated that four wall-beam connections were possessed of good seismic behavior. Therefore,the four joints met the requirements of seismic design of Code for Seismic Design of Buildings (GB 50011-2010),which could be applied to the structure of composite wall with double skins stiffened by steel truss.