低层冷弯薄壁型钢龙骨体系房屋抗震性能有限元分析

发布时间：2018-07-08 11:32

本文选题：冷弯薄壁型钢 + 龙骨体系房屋　；参考：《建筑结构学报》2014年05期

【摘要】：采取从组件到整体结构的分析方法,对一栋两层冷弯薄壁型钢龙骨体系房屋振动台试验足尺模型的抗震性能进行非线性动力分析研究。利用自攻螺钉连接的恢复力模型和精细化的剪力墙数值模型,得到房屋模型中各剪力墙的恢复力特性,建立带非线性弹簧支撑的简化剪力墙宏观模型。结合各剪力墙的恢复力特性,采用刚性横隔板的假定,确立冷弯薄壁型钢低层龙骨体系房屋结构的动力分析数值模型。分析结果表明:非线性动力分析所得整体结构的动力反应与试验结果吻合较好。在此基础上,通过对结构阻尼比的参数分析,并与房屋整体模型的振动台试验结果的比较,得到结构阻尼比的合理取值范围;最后讨论了线性动力分析对该体系房屋抗震性能分析的适用性,可供工程应用参考。
[Abstract]:The seismic behavior of a two-story cold-formed thin-walled steel keel building under shaking table test is studied by means of the analysis method from the component to the whole structure. By using the restoring force model of the self-tapping screw connection and the fine numerical model of the shear wall, the restoring force characteristics of each shear wall in the building model are obtained, and the simplified macroscopic model of the shear wall with nonlinear spring bracing is established. Combined with the restoring force characteristics of each shear wall, the dynamic analysis numerical model of cold-formed thin-walled steel low-rise keel system was established by using the assumption of rigid transverse partition. The results show that the dynamic response of the whole structure obtained by nonlinear dynamic analysis is in good agreement with the experimental results. On this basis, the reasonable range of the damping ratio of the structure is obtained by analyzing the parameters of the damping ratio of the structure and comparing with the results of the shaking table test of the whole building model. Finally, the applicability of linear dynamic analysis to seismic performance analysis of this system is discussed, which can be used as a reference for engineering application.
【作者单位】：同济大学建筑工程系;
【基金】：国家自然科学基金项目(50878168)
【分类号】：TU392.1;TU352.11

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