Y型偏心支撑钢框架受力性能有限元分析
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摘要
对5个具有不同耗能梁段长度的Y型偏心支撑钢框架的滞回性能与耗能梁段的耗能性能进行了非线性有限元分析。研究表明:Y型偏心支撑钢框架具有良好的耗能性能和延性,耗能梁段能够充分发挥耗能和变形的作用;耗能梁段的长度对Y型偏心支撑钢框架的强度、刚度、延性和耗能性能均产生明显的影响,耗能梁段越短,其塑性变形越大,Y型偏心支撑钢框架的承载力越高,耗能梁段过长钢框架的抗震性能越差。
It was performed nonlinear finite element analysis for five Y shape eccentrically braced steel frames on different length of dissipative beam part.Analysis indicates that: the energy-dissipation performance and ductility of Y shape eccentrically braced steel frames are very good;the dissipation and deformation function of dissipative beam part can be fully used;strength,rigidity,ductility and energy-dissipation performance of Y shape eccentrically braced steel frames vary with the length of dissipative beam part;the shorter the dissipative beam part is,the larger plastic deformation is and the higher bearing capacity of it is;the longer the dissipative beam part is,the weaker cyclic behavior of steel frame is.
It was performed nonlinear finite element analysis for five Y shape eccentrically braced steel frames on different length of dissipative beam part.Analysis indicates that: the energy-dissipation performance and ductility of Y shape eccentrically braced steel frames are very good;the dissipation and deformation function of dissipative beam part can be fully used;strength,rigidity,ductility and energy-dissipation performance of Y shape eccentrically braced steel frames vary with the length of dissipative beam part;the shorter the dissipative beam part is,the larger plastic deformation is and the higher bearing capacity of it is;the longer the dissipative beam part is,the weaker cyclic behavior of steel frame is.
引文
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[3]庄晓勇.K型偏心支撑钢框架在循环荷载作用下的性能研究[D].西安:西安科技大学,2006.ZHUANG Xiao-yong.Behavior study of K shape eccentrically braced steel frames under cyclic load[D].Xi′an:Xi′an Uni-versity of Science and Technology,2006.
[4]中国建筑技术研究院.JGJ99-98.高层民用建筑钢结构技术规程[S].北京:中国建筑工业出版社,1998.China Architecture Research Institute JGJ 99-98.Technical specification for steel structure of tall buildings[S].Beijing:China Architecture Industry Press,1998.
[5]北京钢铁设计研究总院.GB 50017-2003.钢结构设计规范[S].北京:中国计划出版社,2003.Beijing Lron and Steel Design Research Institute GB 50017-2003.Code for design of steel structures[S].Beijing:ChinaProjed Press,2003.
[6]郭秉山.钢框架梁柱腹板连接在循环荷载作用下的滞回性能及抗震设计对策[D].西安:西安建筑科技大学,2004.GUO Bing-shan.Hysteretic behavior and design criterion of beam-to-column web connections in steel moment frames undercyclic load[D].Xi′an:Xi′an University of Architecture and Technology,2004.
[7]姚谦峰,陈平.土木工程结构试验[M].北京:中国建筑工业出版社,2001.YAO Qian-feng,CHEN Ping.Civil engineering structural test[M].Beijing:China Architecture Industry Press,2001.
[8]郭秉山,庄晓勇,闫月梅.K型偏心支撑钢框架支撑的设计研究[J].西安科技大学学报,2007,27(1):30-34.GUO Bing-shan,ZHUANG Xiao-yong,YANYue-mei.Brace design of Kshape eccentrically braced steel frames[J].Journalof Xi′an University of Science and Technology,2007,27(1):30-34.
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