高轴压比的装配式钢结构抗震性能研究  

Seismic behavior of box plate steel structure with assembled structure under high axial compression ratio

作　　者：马倩 MA Qian(Faculty of Engineering,Huanghe S&T University,Zhengzhou 450000,China)

机构地区：[1]黄河科技学院工学院,河南郑州450000

出　　处：《兵器材料科学与工程》2021年第4期75-80,共6页Ordnance Material Science and Engineering

基　　金：国家自然科学基金(51178164)。

摘　　要：为研究高轴压比下装配建筑箱板式钢结构抗震性能,构建有、无加劲肋的两组3层单开单元模块钢结构试件A和试件B,统计不同轴压比下两组试件的抗震性能。结果表明:试件加载初期滞回曲线重合率高,加载后期轴压比为0.8时试件的水平位移显著高于轴压比为0.5时;随轴压比由0.5增到0.8,试件承载能力下降;轴压比升高试件极限承载力降低,试件B的极限承载力高于试件A;轴压比为0.8时,试件A强度、刚度降显著高于试件B,试件B在屈服后期等效黏滞阻尼比高于试件A;轴压比增加装配式建筑箱板钢结构抗震性能降低,有加劲肋可提高钢结构抗震性能。In order to study the seismic performance of prefabricated building box plate steel structure under high axial compression ratio,two groups of three story single unit module steel structure specimens A and B with or without stiffeners were constructed. The seismic performance of two groups of specimens under different axial compression ratios was analyzed. The results show that the coincidence rate of hysteretic curves is high at the initial stage of loading,and the horizontal displacement of specimens with axial compression ratio of 0.8 is significantly higher than that with axial compression ratio of 0.5. As the axial compression ratio increases from 0.5 to 0.8,the bearing capacity of specimens decreases gradually. The ultimate bearing capacity of specimen B is higher than that of specimen A. As the axial compression ration is 0.8,strength and stiffness of specimen A are significantly higher than that of specimen B,the equivalent viscous damping of specimen B is higher than that of specimen A at the late stage of yielding. With the increase of axial compression ratio,the seismic performance of prefabricated box plate steel structure reduces,and the seismic performance of steel structure with stiffeners improves.

关 键 词：装配式建筑 箱板式钢结构 加劲肋 轴压比 抗震性能 承载力 

分 类 号：TU391[建筑科学—结构工程]