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对一榀缩尺比为1∶3的单跨双层半刚性框架-纵横密肋加劲防屈曲低屈服点钢板剪力墙结构进行了低周往复加载试验。从滞回性能、承载力、刚度、耗能能力、结构延性及破坏模式等方面对纵横加劲的防屈曲性能及低屈服点钢内嵌板的工作性能进行评价。研究结果表明:纵横密肋有效延缓了内嵌板的屈曲,提高了结构的延性和极限承载力;低屈服点钢内嵌板与半刚性框架具有良好的协同工作性能,内嵌板采用低屈服点钢可有效提高结构的延性和耗能性能;整体结构具有理想的破坏模式,试件破坏主要由内嵌板的区格内局部屈曲、撕裂和框架塑性铰的形成控制。
Low-cycle reciprocating loading test was carried out on a single-span double-walled semi-rigid frame with longitudinal and transverse rib stiffened buckling and low yield point steel plate shear walls with a 1: 3 scale ratio. The anti-buckling property of longitudinal and transverse stiffening and the working performance of low-yield-point steel inner panel were evaluated from hysteretic behavior, bearing capacity, stiffness, energy dissipation capacity, structural ductility and failure modes. The results show that the longitudinal and transverse ribs effectively delay the buckling of the inner panel and improve the ductility and ultimate bearing capacity of the panel. The low-yield point steel inner panel and the semi-rigid frame have good interoperability. The inner panel adopts low yield Point steel can effectively improve the ductility and energy dissipation performance of the structure. The whole structure has an ideal failure mode. The failure of the specimen is mainly controlled by the local buckling and tearing of the panel and the plastic hinges of the frame.