配置强格构式型钢混凝土柱的抗震性能试验研究

Experimental study on seismic performance of strong latticed steel reinforced concrete column

通过缩尺比为1/5的5个大跨高比配置强格构式型钢混凝土柱和1个实腹式型钢混凝土柱在水平低周反复荷载作用下的试验,获得了各试件发生正截面破坏的荷载-位移滞回曲线;分析了各试件的延性、极限位移角及耗能性能。结果表明,带缀板的强格构式型钢对核心区混凝土有更强的约束作用,所有试件破坏都表现为型钢屈服、混凝土压溃,表现出良好的延性。得出了轴压比、强格构式型钢布置形式对试件抗震性能的影响。

At the scale ratio of 1/5,five strong latticed steel reinforced concrete columns with big span-depth ratio and one full-web steel reinforced concrete column were tested subjected to horizontal low cyclic loading.In the case of cross section damage,the load-displacement hysteresis curves of each specimen were obtained.The ductility,limiting displacement drift and energy dissipation ability of specimens were analyzed.Results show that the strong latticed steel with batten plates has strong restriction effect on the core concrete and that the destruction features of the specimens are yielding of steel and crushing of the concrete,which exhibits good ductility.The effects of axial compression ratio and strong latticed steel arrangements on seismic performance of the specimens were obtained.