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针对地震作用下冷弯薄壁型钢结构房屋弹塑性位移的简化计算,基于层间剪切模型和冷弯薄壁型钢组合墙体的恢复力模型,对2层～7层冷弯薄壁型钢结构房屋进行弹塑性时程分析。通过对滞回耗能沿楼层高度分布规律的研究,确定了冷弯薄壁型钢结构房屋薄弱楼层的位置;研究了楼层屈服剪力系数、楼层数、结构自振周期和不同地震记录对弹塑性层间位移增大系数的影响;通过大量参数统计分析,提出了冷弯薄壁型钢结构房屋弹塑性层间位移增大系数与楼层屈服剪力系数和楼层数的定量关系,为罕遇地震作用下冷弯薄壁型钢结构房屋弹塑性位移验算提供依据。
Aiming at the simplified calculation of elasto-plastic displacement of cold-formed thin-walled steel structure houses under earthquake action, based on the model of interlayer shear and the restoring force model of cold-formed thin-walled steel composite wall, Housing elastoplastic time history analysis. Based on the research on the law of height distribution of hysteretic energy dissipation along the height of the floor, the location of the weak floors of the cold-formed thin-walled steel structure house was determined. The effects of the yield-shear coefficient, the number of floors, the natural period of the structure and the different seismic records on the elasto-plasticity The results show that the quantitative relationship between elastic-plastic interlayer displacement increase coefficient and floor yielding shear coefficient and floor number is obtained by statistical analysis of a large number of parameters. Under cold-formed thin-walled steel structure housing elastic-plastic displacement check provide basis.