全钢防屈曲钢板剪力墙抗震性能模型试验

Model test of seismic behavior of all-steel anti-buckling steel-shear-wall

针对约束板厚度对全钢防屈曲钢板剪力墙结构体系抗震性能的影响问题,对不同厚度约束板的全钢防屈曲钢板剪力墙进行了低周往复荷载试验,研究了剪力墙的受力特点与破坏模式,分析了约束板厚度对剪力墙的承载力、刚度、耗能能力的影响规律.结果表明:约束钢板对内嵌板具有一定屈曲抑制作用,剪力墙的刚度退化趋势较为平稳;随着约束板厚度的增加,局部贯通的褶皱明显减少;增加约束板厚度能够显著提高剪力墙的屈服荷载和极限荷载,在加载后期,承载力退化加速.

Aiming at the influence of constraint plate thickness on the seismic behavior of all-steel anti-buckling steel-shear-wall structure system,the low-cycle reciprocating load test for the all-steel anti-buckling steel-shear-wall with constraint plates of different thicknesses was conducted.The stress characteristics and failure mode of shear-wall were studied,and the influence of restraint plate thickness on the bearing capacity,stiffness and energy dissipation capacity of shear-wall was analyzed.The results show that the constraint plates have inhibition effect on inner panel buckling to some extents,and the stiffness degradation trend of shear-wall is relatively stable.With the increase of constraint plate thickness,the local penetration wrinkles are significantly reduced.Through increasing the thickness of constraint plates,the yield and ultimate loads of shear-wall can be significantly enhanced.However,the bearing capacity degradation is accelerated in the later loading stage.