蜂窝式梁-柱钢框架结构抗震性能分析  

Analysis on the Seismic Behavior of the Cellular Beam-Columns of Steel Frame Structure

作　　者：贾连光[1] 王健 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]辽宁省邮电规划设计院有限公司,辽宁沈阳110014

出　　处：《沈阳建筑大学学报（自然科学版）》2009年第3期451-455,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：建设部科技攻关项目(2007-k2-17)

摘　　要：目的研究蜂窝式梁-柱钢框架结构的抗震性能,为此类框架结构的抗震设计提供参考.方法应用有限元法,依据现行规范和规程设计一榀单层单跨(框架Ⅰ)、一榀两层单跨(框架Ⅱ)蜂窝式梁-柱钢框架结构进行抗震性能分析.分析和研究了节点域剪切变形、P-Δ效应对框架层间位移的影响.结果得到蜂窝式梁-柱钢框架结构在恒定竖向荷载和低周反复荷载作用下的受力机理和破坏机制,评价了其耗能能力和延性性能.框架Ⅰ的耗能能力略好于框架Ⅱ,两个框架的位移延性系数均小于4.0,表明延性均较差.对于蜂窝式梁-柱钢框架结构,在各阶段由节点板域剪切变形所产生的层间位移占框架总位移的比例均在50%以上.结论蜂窝框架耗能能力较好,但延性相对较差,抗震性能较差.提出了改善框架延性性能的具体方法,从而优化其抗震性能.节点域剪切变形、P-Δ效应对框架层间位移的影响较大.The researches on the seismic behavior of cellular beam-column frame structure can provide references for the seismic design of this kind of frame. According to the relevant provisions of the current norms and order, finite element method is used to analyze the seismic behavior of one pan single-storey single-span （ the first frame） and one pin two-story single-span （ the second frame） cellular beam-column frame structure. The analysis and researches are also on the node domain shear deformation, and the impact of P-△ effect on the displacement between stories. The energy capacity and the ductility of the frame have been estimated. The energy capacity of the first frame is a little better than the second frame. The displacement ductility coefficient of both is lower than 4.0, so the ductility of the two frames is a little worse. For cellular beams-columns of steel frame structure, at various stages the interlayer displacement arising from shear deformation of the node domain of the framework accounted for more than 50% of the total displacement. Cellular frame has better energy capacity, however, relatively worse ductility and seismic performance. Specific methods are put forward to improve the frame ductility and to optimize their seismic performance. The shear deformation on the node domain and P-△ on the framework have the great influence on the inter-layer displacement.

关 键 词：蜂窝构件 钢框架 低周反复荷载 抗震性能 有限元分析 

分 类 号：TU391[建筑科学—结构工程]