基于地震响应时程的多层轻钢结构特性

通过对轻钢结构的地震响应特征进行研究,采用有限元方法对轻钢结构模型进行非线性地震响应分析,研究顶层位移和其他各层位移的变化,比较60,100,120,160mm几种不同厚度楼板的地震波响应,得到计算模型的应变、应力关系。研究结果表明：不同厚度楼板对相同的地震波有不同的地震响应,当楼板厚度为120mm和160mm时,对地震波产生的响应最为强烈;多层轻钢结构具有很好的剪切变形;在多层结构设计时,应该根据具体要求定性分析和定量计算楼板厚度对抗震性能的影响。

Structural property of multi-layer lightweight steel based on seismic response time history

Through the research on the seismic response characteristics of light steel structure,the finite element method was used to analyze the nonlinear seismic response of light steel structure model.The change of top displacement and other each layer displacement were compared,and the strain and stress relation of the computation model was obtained by the seismic wave response analysis of several different thickness floors which were 60 mm,100 mm,120 mm and 160 mm.The results indicate that the different thickness floors have different seismic responses to the same seismic waves.The response to seismic waves is most strongly when the floor thickness is 120 mm or 160 mm.The multi-storey light steel structure has good shear deformation,so the qualitative analysis and quantitative calculation should be used to analyze the influence of the thickness of floors to the seismic performance.