不同连梁跨高比框架-核心筒结构抗震性能分析
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摘要
为了研究不同跨高比连梁对框架-核心筒结构抗震性能的影响,应用PERFORM-3D有限元软件建立不同连梁跨高比的框架-核心筒结构分析模型,对其进行动力弹塑性时程分析。先研究连梁跨高比对结构自振周期的影响,再以结构的变形和延性(包括层间位移角、层位移、层剪力、结构塑性损伤过程)以及结构的耗能能力作为性能评估参数,对不同连梁跨高比的框架-核心筒结构进行抗震性能分析。分析结果表明:不同跨高比连梁对结构的自振周期有一定的影响,连接筒体的连梁对结构自振周期的影响比筒体内部连梁的影响大;结构的塑性耗能主要由连梁承担,不同跨高比连梁的耗能能力差别较大,连接筒体的连梁耗能较好。在此基础上,对连梁合理跨高比的范围提出了具体建议,以供实际工程参考。
In order to study the effects of span-depth ratio of coupling beam on the seismic response of frame-core tube structures,the numerical models were established by using PERFORM-3D,and the nonlinear analysis of the frame-core tube structure with various span-depth ratio of coupling beam were conducted.Firstly,the effect of span-depth ratio of coupling beam on the natural period of structure was investigated.Then,during the analysis,the structural deformation and ductility(including inter-story drifts,the story displacement,the story shear force and the development of structural plastic damage),structural energy dissipation ability and so on,were used as measures for structural seismic performance.The results show that different span-depth ratio of coupling beam has a certain impact on natural period of structure;structural energy dissipation is mainly taken by the coupling beams,and the energy dissipation capacity of coupling beam with different span-depth ratio is different.On this basis,some valuable suggestions about reasonable span-depth ratio of coupling beam are put forward into practical application.
In order to study the effects of span-depth ratio of coupling beam on the seismic response of frame-core tube structures,the numerical models were established by using PERFORM-3D,and the nonlinear analysis of the frame-core tube structure with various span-depth ratio of coupling beam were conducted.Firstly,the effect of span-depth ratio of coupling beam on the natural period of structure was investigated.Then,during the analysis,the structural deformation and ductility(including inter-story drifts,the story displacement,the story shear force and the development of structural plastic damage),structural energy dissipation ability and so on,were used as measures for structural seismic performance.The results show that different span-depth ratio of coupling beam has a certain impact on natural period of structure;structural energy dissipation is mainly taken by the coupling beams,and the energy dissipation capacity of coupling beam with different span-depth ratio is different.On this basis,some valuable suggestions about reasonable span-depth ratio of coupling beam are put forward into practical application.
引文
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[5]韩小雷,唐剑秋,黄艺燕,等.钢管混凝土巨型斜交网格筒体结构非线性分析[J.]地震工程与工程振动,2009,29(4):77-84(Han Xiaolei,Tang Jianqiu,HuangYiyan.Nonlinear analysis of huge oblique crossing latticestructure with concrete filled steel tube[J.]Journal ofEarthquake Engineering and Engineering Vibration,2009,29(4):77-84(in Chinese))
[6]韩小雷,陈学伟,郑宜,等.足尺钢框架振动台试验及动力弹塑性数值模拟[J].地震工程与工程振动,2008,28(6):134-141(Han Xiaolei,Chen Xuewei,JackCheang.Dynamic experiment and numerical simulation ofa full scale steel frame[J.]Journal of EarthquakeEngineering and Engineering Vibration,2008,28(6):134-141(in Chinese))
[7]曹资,薛素铎,王雪生等.空间结构抗震分析中的地震波选取与阻尼比取值[J.]空间结构,2008,4(3):3-8(Cao Zi,Xue Suduo,Wang Xuesheng.Selection ofearthquake waves and values of damping ratio for spacestructures in aseismic analysis[J.]Spatial Structures,2008,4(3):3-8(in Chinese))
[8]解振涛,张俊发,高永昭.高层建筑结构的输入地震动问题探讨[J.]四川建筑科学研究,2007,33(增):62-66(Xie Zhentao,Zhang Junfa,Gao Yongzhao.Somediscussion on input seism on tall building in layered soil-field[J.]Sichuan Building Science,2007,33(S):62-66(in Chinese))
[9]GB 50011—2001建筑抗震设计规范[S.]北京:中国建筑工业出版社,2008(GB 50011—2001Code for seismicdesign of buildings[S.]Beijing:China Architecture&Building Press,2008
[10]ASCE 41.Seismic rehabilitation of buildings[S.]AmericanSociety of Civil Engineers,2006
[2]GB 50010—2002混凝土结构设计规范[S.]北京:中国建筑工业出版社,2002(GB 50010—2002 Code for designof concrete structures[S.]Beijing:China Architecture&Building Press,2002(in Chinese))
[3]Mander J B,Priestley M J N,Park R.Theoretical stressstrain model for confined concrete[J.]Journal of StructureEngineering,ASCE,1988,114(8):1804-1826
[4]缪志伟,吴耀辉,马千里,等.框架-核心筒高层混合结构的三维空间弹塑性抗震分析[J.]建筑结构学报,2009,30(4):119-129(Miao Zhiwei,Wu Yaohui,Ma Qianli.Seismic performance evaluation using nonlinear time historyanalysis with three-dimensional structural model for a hybridframe-core tube structure[J.]Journal of Building Structures,2009,30(4):119-129(in Chinese))
[5]韩小雷,唐剑秋,黄艺燕,等.钢管混凝土巨型斜交网格筒体结构非线性分析[J.]地震工程与工程振动,2009,29(4):77-84(Han Xiaolei,Tang Jianqiu,HuangYiyan.Nonlinear analysis of huge oblique crossing latticestructure with concrete filled steel tube[J.]Journal ofEarthquake Engineering and Engineering Vibration,2009,29(4):77-84(in Chinese))
[6]韩小雷,陈学伟,郑宜,等.足尺钢框架振动台试验及动力弹塑性数值模拟[J].地震工程与工程振动,2008,28(6):134-141(Han Xiaolei,Chen Xuewei,JackCheang.Dynamic experiment and numerical simulation ofa full scale steel frame[J.]Journal of EarthquakeEngineering and Engineering Vibration,2008,28(6):134-141(in Chinese))
[7]曹资,薛素铎,王雪生等.空间结构抗震分析中的地震波选取与阻尼比取值[J.]空间结构,2008,4(3):3-8(Cao Zi,Xue Suduo,Wang Xuesheng.Selection ofearthquake waves and values of damping ratio for spacestructures in aseismic analysis[J.]Spatial Structures,2008,4(3):3-8(in Chinese))
[8]解振涛,张俊发,高永昭.高层建筑结构的输入地震动问题探讨[J.]四川建筑科学研究,2007,33(增):62-66(Xie Zhentao,Zhang Junfa,Gao Yongzhao.Somediscussion on input seism on tall building in layered soil-field[J.]Sichuan Building Science,2007,33(S):62-66(in Chinese))
[9]GB 50011—2001建筑抗震设计规范[S.]北京:中国建筑工业出版社,2008(GB 50011—2001Code for seismicdesign of buildings[S.]Beijing:China Architecture&Building Press,2008
[10]ASCE 41.Seismic rehabilitation of buildings[S.]AmericanSociety of Civil Engineers,2006
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