偏心支撑对轻钢结构住宅抗震性能的影响
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摘要
偏心支撑钢框架是一种新型的偏心支撑结构,具有良好的刚度、延性及耗能能力。采用非线性有限元分析软件Sap2000建立了一个6层的轻钢结构框架模型,对框架结构分别布置中心支撑、偏心支撑,分别计算了3种结构模型在水平地震作用下的抗震性能,通过对比3种结构模型在荷载作用下的自振周期、加速度及其地震响应,分析了偏心支撑对轻钢住宅抗震性能的影响。
Eccentric braced steel frame is a new type of eccentric supporting structure with good stiffness,ductility and energy dissipation capacity.By using nonlinear finite element analysis software Sap2000,this paper establishes a 6-storey model of lightweight steel frame,arranges center support and eccentric support in the framework structure respectively and calculates seismic performance of three structures model under horizontal earthquake.By comparing the lateral stiffness,natural period and its seismic response of the three structural models under load,it analyses the influence of eccentric brace on seismic performance of lightweight steel structure residence.
Eccentric braced steel frame is a new type of eccentric supporting structure with good stiffness,ductility and energy dissipation capacity.By using nonlinear finite element analysis software Sap2000,this paper establishes a 6-storey model of lightweight steel frame,arranges center support and eccentric support in the framework structure respectively and calculates seismic performance of three structures model under horizontal earthquake.By comparing the lateral stiffness,natural period and its seismic response of the three structural models under load,it analyses the influence of eccentric brace on seismic performance of lightweight steel structure residence.
引文
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[2]GB50011-2001.建筑抗震设计规范[S].北京:中国建筑工业出版社,2002.GB50011-2001.Seismic Design of Building[S].Bei Jing:China Building Industry Press,2002.
[3]帕兹M.结构动力学—理论与计算[M].北京:地震出版社,2005.Paz M.Structural Dynamics-Theory and Computational[M].Bei Jing:Seismology Press.2005.
[4]李荣华.框架结构抗震性能的静力非线性分析研究[D].邯郸:河北工程大学,2007.Li Ronghua.Frame seismic performance of the static nonlinear analysis[D].HAN Dan:Hebei University of Engineering Civil Engineering,2007.
[5]北京金土木软件技术有限公司,中国建筑标准设计研究院.ETABS使用指南[M].北京:中国建筑工业出版社.Beijing Golden Civil Software Technology Co.,Ltd.China Building Standard Design&Research Institute.ETABS guide[M].Bei Jing:China Build-ing Industry Press.
[6]闫冬,戚春香,冯清海.Sap2000结构工程分析及实例详解[M].北京:中国建筑工业出版社,2003.Yan Dong,Qi Chunxiang,Feng Qinghai.Sap2000 structural engineering analysis and the exampel explanation[M].Bei Jing:China Building Indus-try Press,2003.
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