装配式钢结构建筑抗震性能研究

Research on Seismic Performance of Prefabricated Steel Structure Buildings

文中主要对低周反复加载条件下装配式钢结构滞回曲线、位移时程响应以及骨架曲线进行分析,并利用有限元模型分析了柱距以及桁架跨度对结构最大层间位移的影响。结果表明,装配式钢结构的水平荷载随着位移的增加呈现先近似线性增加后降低的趋势,承受的荷载最大值为110kN。随着柱距的增加以及桁架跨度的增加,装配式钢结构各个方向的层间最大位移不断增加。当柱距从6.5m增加至8.5m,X向层间最大位移提升了28.2%,Y向层间最大位移提升了51.5%,Z向层间最大位移提升了32%;当桁架跨度从10m增加至20m,X向层间最大位移提升了34.3%,Y向层间最大位移提升了46.4%,Z向层间最大位移提升了41.4%。

In this paper,hysteresis curve,displacement time-history response and skeleton curve of prefabricated steel structure under low cycle repeated loading were analyzed.The influence of column distance and truss span on the maximum interstory displacement of the structure was analyzed by finite element model.The results show that with the increase of displacement,the horizontal load of the prefabricated steel structure increases approximately linearly first and then decreases,and the maximum load is 110kN.With the increase of column distance and truss span,the maximum displacement between layers in each direction of the prefabricated steel structure increases continuously.When the column distance increases from 6.5m to 8.5m,the maximum displacement in the X direction increases by 28.2%,the maximum displacement in the Y direction increases by 51.5%,and the maximum displacement in the Z direction increases by 32%.When the span of the truss increases from 10m to 20m,the maximum displacement in the X direction,the maximum displacement in the Y direction and the maximum displacement in the Z direction increase by 34.3%,46.4%and 41.4%respectively.