罕遇地震作用下复杂高层建筑结构弹塑性分析
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摘要
针对某复杂高层钢框架结构,运用ANSYS进行有限元数值建模,建模过程中对钢管混凝土复合材料进行简化处理,求得其组合弹性模量。在模态分析和地震载荷作用下时程分析的基础上,对该结构进行在罕遇地震作用下的弹塑性分析,求得结构的基底剪力-顶部位移曲线,进而对结构进行推覆分析,得到结构各构件和层间的位移及内力,找到结构的薄弱层为第5层,为结构设计提供可靠的参考数据。
In this paper finite element numerical simulation of a complex high-rise building is completed,simplified treatment in modeling process is introduced for composite concrete filled steel tube material,thereby its combined elastic modulus is worked out.Based on modal analysis and time-history analysis under earthquake action,elastic-plastic analysis of this building under rare earthquake action is conducted,and the curve of base shear to the roof displacement is obtained.Further it calculates the internal force in members and inter-story displacement by pushover analysis.It is indicated that the location of weak story is the fifth story of this building.The results of this paper can be valuable data for structural design.
In this paper finite element numerical simulation of a complex high-rise building is completed,simplified treatment in modeling process is introduced for composite concrete filled steel tube material,thereby its combined elastic modulus is worked out.Based on modal analysis and time-history analysis under earthquake action,elastic-plastic analysis of this building under rare earthquake action is conducted,and the curve of base shear to the roof displacement is obtained.Further it calculates the internal force in members and inter-story displacement by pushover analysis.It is indicated that the location of weak story is the fifth story of this building.The results of this paper can be valuable data for structural design.
引文
[1]GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2011(GB50011—2010Code for seismic design of buildings[S].Beijing:China Architecture&Building Press,2011(in Chinese))
[2]汪梦甫,周锡元.高层建筑结构抗震弹塑性分析方法及抗震性能评估的研究[J].土木工程学报,2003,36(11):44-49(Wang Mengfu,Zhou Xiyuan.Modified push-over analysis and seimic performance evaluation for tall building[J].China Civil Engineering Journal,2003,36(11):44-49(in Chinese))
[3]Zhao Fengxin,Zhang Yushan.Artificial ground motioncompatible with specified ground shaking peaks and target response spectrum[J].Earthquake Engineering and Engineering Vibration,2006,5(13):41-48
[4]王丹.钢框架结构的地震易损性及概率风险分析[D].哈尔滨:哈尔滨工业大学,2006(Wang Dan.Seismic fragility analysis and probabilistic risk analysis of steel frame structures[D].Harbin:Harbin Institute of Technology,2006(in Chinese))
[5]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003
[6]张应迁,张洪才.ANSYS有限元分析从入门到精通[M].北京:人民邮电出版社,2010
[7]吴高峰,杜健民,陈兴冲.ANSYS软件在高层建筑地震反应分析中的应用[J].兰州铁道学院学报:自然科学版,2001,20(6):53-56(Wu Gaofeng,Du Jianmin,Chen Xingchong.Application of ANSYS in the seismic response analysis of tall buildings[J].Journal of Lanzhou Railway University:Natural Science Edition,2001,20(6):53-56(in Chinese))
[8]熊辉霞,张耀庭,陈敬申.某复杂高层建筑结构时程分析[J].振动与冲击,2008,37(7):171-173(Xiong Huixia,Zhang Yaoting,Chen Jingshen.Time-history analysis of the high-rise building structure[J].Journal of Vibration and Shock,2008,37(7):171-173(in Chinese))
[2]汪梦甫,周锡元.高层建筑结构抗震弹塑性分析方法及抗震性能评估的研究[J].土木工程学报,2003,36(11):44-49(Wang Mengfu,Zhou Xiyuan.Modified push-over analysis and seimic performance evaluation for tall building[J].China Civil Engineering Journal,2003,36(11):44-49(in Chinese))
[3]Zhao Fengxin,Zhang Yushan.Artificial ground motioncompatible with specified ground shaking peaks and target response spectrum[J].Earthquake Engineering and Engineering Vibration,2006,5(13):41-48
[4]王丹.钢框架结构的地震易损性及概率风险分析[D].哈尔滨:哈尔滨工业大学,2006(Wang Dan.Seismic fragility analysis and probabilistic risk analysis of steel frame structures[D].Harbin:Harbin Institute of Technology,2006(in Chinese))
[5]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003
[6]张应迁,张洪才.ANSYS有限元分析从入门到精通[M].北京:人民邮电出版社,2010
[7]吴高峰,杜健民,陈兴冲.ANSYS软件在高层建筑地震反应分析中的应用[J].兰州铁道学院学报:自然科学版,2001,20(6):53-56(Wu Gaofeng,Du Jianmin,Chen Xingchong.Application of ANSYS in the seismic response analysis of tall buildings[J].Journal of Lanzhou Railway University:Natural Science Edition,2001,20(6):53-56(in Chinese))
[8]熊辉霞,张耀庭,陈敬申.某复杂高层建筑结构时程分析[J].振动与冲击,2008,37(7):171-173(Xiong Huixia,Zhang Yaoting,Chen Jingshen.Time-history analysis of the high-rise building structure[J].Journal of Vibration and Shock,2008,37(7):171-173(in Chinese))
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