空腔砌体复合填充墙钢框架结构极限承载能力试验研究

完成了模型率为1∶2的一榀纯钢框架和一榀1∶2空腔砌体复合填充墙钢框架试件的低周往复加载试验。详细地描述了钢框架结构和空腔砌体复合填充墙钢框架结构在低周往复加载作用下的破坏过程,分析了其在低周往复加载作用下的破坏形态、刚度退化、滞回性能和耗能能力等特性,结果显示空腔砌体复合填充墙钢框架结构比一般普通钢框架结构抗侧力性能好,耗能能力强。探讨了影响空腔砌体复合填充墙钢框架结构承载力的主要因素,并提出了改进措施。提出了空腔砌体复合填充墙钢框架结构的极限承载力计算公式,及其设计方法。该研究成果可为空腔砌体复合填充墙钢框架抗震设计提供依据。

Ultimate bearing capacity of steel frame structure with the cavity composite masonry infilling wall

The experimental research on the lateral resistance system steel frame structure with sandwich-type infilling wall has been done.Two 1:2-scale of steel frame specimens are tested under the reversed cyclic load.The failure process of two kinds steel frame structure is described in detail under the reversed cyclic load.The failure models,stiffness dissipation,hysteretic performance,and the characteristic of the dissipation of energy of steel frame are analyzed.The experimental researches show that the characteristic of the lateral resistance and energy dissipation of the steel frame system with sandwich-type infilling wall is better than the pure steel frame.Meanwhile,the main factor affecting the bearing capacity of steel frame with the masonry composite infilling wall is discussed,and the improved measure is put forward.At last,the formula for the bearing capacity of steel frame with the masonry composite infilling wall is put forward,and its design method is done.The research result is regarded as reference for seismic design of the steel frame with the masonry composite infilling wall.