半刚性框架-密肋网格复合钢板剪力墙结构抗震性能试验研究

对一榀单跨两层半刚性框架-密肋网格复合钢板剪力墙结构进行了低周反复荷载作用下的试验研究。系统分析了结构的受力机制、破坏模式和耗能机理，得到了承载力、刚度、延性及耗能能力等指标，评价了该种结构体系的抗震性能。结果表明：结构在弹性工作阶段主要依靠墙板的剪切机制承担水平荷载，非弹性阶段区格中钢板的对角拉力带为结构提供侧向承载能力；密肋网格的设置有效限制了内嵌钢板的面外变形值，提高了结构的弹性刚度，克服了滞回曲线的“捏缩”效应，减小了钢板的噪音及震颤，显著增强了结构的耗能能力；框架与钢板墙协同工作良好，结构塑性变形能力强，安全储备高，是一种优良的抗侧力体系；破坏模式为各区格中的钢板撕裂，拉力带效应明显，边框架柱脚及边框架梁端形成塑性铰。

Experimental study on seismic behavior of semi-rigid steel frames with multi-ribbed grid composite steel plate shear wall structure

Experimental testing was conducted on a two-story single bay semi-rigid steel frame with multi-ribbed grid composite steel plate shear wall specimen, under quasi-static loading, to research its seismic performance. The interaction between the wall plate and the surrounding frame and failure model were investigated with regard to the load-carrying capacity, ductility, stiffness and energy dissipation capacity. Experimental result indicates that the structure resists the lateral loads by shear action of the wall plate in the elastic stage and when in the inelastic stage the resistance is provided by the tension zone which arises in the buckled wall plate. The multi-ribbed grids limit the out-of plane deformation of wall plate, increase the initial stiffness, avoid the pinch shrinkage of the hysteresis loop, reduce the noise and vibration of steel plate and significantly improve the energy dissipation capacity and safety margin. The surrounding frame cooperates with the wall plate in resisting the lateral loads, and the structure exhibits stable behavior at very large deformation. The primary inelastic damage mode is the yielding and tearing in tension zone of the infill plates combined with the surrounding frame beam and column yielding.