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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。
The experimental study on the single-span single-span two-story semi-rigid frame-multi-ribbed steel composite shear wall structure under low cyclic loading was carried out. The stress mechanism, failure mode and energy dissipation mechanism of the structure are systematically analyzed. The indexes such as bearing capacity, stiffness, ductility and energy dissipation capacity are obtained, and the seismic performance of the structure is evaluated. The results show that the structure mainly depends on the shearing mechanism of the wallboard to carry the horizontal load in the elastic working stage and the diagonal tension belt of the steel plate in the inelastic stage provides the lateral load bearing capacity of the structure. The in-plane deformation of the embedded steel plate increases the elastic rigidity of the structure and overcomes the “pinch-in” effect of the hysteresis curve, reduces the noise and tremor of the steel plate and significantly increases the energy dissipation capacity of the structure. The frame and the steel plate The wall cooperates well, the structural plastic deformation ability is high and the safety reserve is high. It is an excellent anti-side force system. The failure mode is the tearing of the steel plate in each zone and the effect of tension zone is obvious. Form a plastic hinge.