冷弯薄壁型钢结构住宅体系组合墙体抗震性能研究

Study on seismic performance of composite wall of cold-formed steel structure residential building

为了研究冷弯薄壁钢结构住宅组合墙体抗震性能,对四面组合墙体进行了竖向和水平低周反复加载试验,得到了几种组合墙体的抗震承载能力指标和位移延性系数u、耗能系数E等抗震性能指标.试验分析结果都表明,在满足承载能力的条件下,组合墙体骨架截面尺寸的增大对提高墙体的抗震承载能力没有效果,但延性系数和耗能系数有所提高.双面覆板的组合墙体的抗震承载能力是单面覆板组合墙体的抗震承载能力的2倍,且延性系数和耗能系数提高很多.

In order to study the seismic performance of composite wall of cold-formed structure residential building, four composite walls were tested with vertical and horizontal cyclic loading. The seismic bearing capacity, the displacement ductility factor and the seismic energy coefficient were obtained. Test results show that in the conditions of meeting the carrying capacity, the size of the combination wall frame section has no effect on the seismic bearing capacity of the wall,but the ductility factor and energy coefficient are improved. The seismic bearing capacity of combination wall with both sides is twice as much as that of the composite wall with single side, and the ductility factor and seismic energy coefficient of the former increased greatly.