半刚性框架-槽钢十字形约束钢板剪力墙结构抗震性能试验研究

Experimental study on seismic behavior of semi-rigid connection steel frame-unbonded cross buckling-restrained steel plate shear wall

为研究半刚性框架-槽钢十字形约束钢板剪力墙结构的抗震性能,通过一榀1∶3比例单跨3层半刚性框架-槽钢十字形约束钢板剪力墙的拟静力试验,研究半刚性框架与槽钢约束墙体的相互影响,分析结构的承载力、刚度、耗能和节点转动能力等。试验结果表明:该结构具有良好的耗能能力,半刚性框架和墙板协同工作良好,墙板的设置显著降低梁柱节点的延性要求,避免梁柱刚性连接在强震作用下的脆性破坏;槽钢构件的设置可改善钢板的受力性能,提高墙体的承载力和刚度,有效减少滞回曲线的"捏缩"现象,降低薄板墙的噪音及震颤,内填板以小区格内的局部屈曲为主,试件面内呈弯剪破坏模式。

In order to study the seismic behavior of the semi-rigid connection steel frame with unbonded cross buckling-restrained steel plate shear walls,a one-third scale,one-bay and three-story experimental specimen of semirigid connection steel frame with steel plate shear walls was tested under the quasi-static loading to determine some seismic properties,including the failure mode,hysteretic behavior,ductility and energy dissipation. The results show that the specimen exhibits excellent ductility,energy dissipation capacity and great safety margin; the stiffness degradation of the joints is not serious; the requirement of ductility and stress are distinctly lowered by arranging infill panels; the cooperative work between the frame and the steel plate shear wall is well; buckling-restrained element improves the force condition of steel panels,increases the stiffness and load-carrying capacity of panels,and lightens the shrinkage of hysteretic loop and reduces the noise and tremor of panels. The specimen showes failure mode of bending-shear in the plane.