超高层巨型钢框架结构失效模式分析

英文篇名：Failure mode analysis of super-tall huge steel frame structure
中文刊名：东南大学学报(自然科学版)
英文刊名：Journal of Southeast University(Natural Science Edition)
作者：沈霄鹤 ; 欧进萍
英文作者：Shen Xiaohe1 Ou Jinping1 ; 2(1 Faculty of Infrastructure Engineering ; Dalian University of Technology ; Dalian 116024 ; China) (2 College of Hydraulic and Civil Engineering ; Harbin Institute of Technology ; Harbin 150090 ; China))
中文关键词：巨型钢框架结构 ; Pushover分析 ; 失效模式 ; 防屈曲支撑
英文关键词：huge steel frame structure ; Pushover analysis ; failure mode ; buckling-restrained brace
出版日期：2009-11-20
机构：大连理工大学建设工程学部;哈尔滨工业大学土木水利学院;
年：2009
期：S2
出版单位：东南大学学报(自然科学版)

摘要

采用有限元软件对某超高层巨型钢框架结构进行Pushover非线性弹塑性分析,分别改变巨型框架梁布置或巨型框架梁高,得到各自失效模式.比较不同结构失效模式下的最大侧移,找出具有最优结构构造形式的巨型钢框架结构.将最优巨型钢框架结构中的失效支撑替换为防屈曲支撑,重新通过Pushover分析其失效模式,与原最优巨型钢框架结构的失效模式进行比较.分析结果表明:部分采用防屈曲支撑改变了巨型钢框架的最弱失效模式,使其抗震性能得到明显提高.通过逐步将失效支撑替换为防屈曲支撑,得到具有最优经济性能和抗震性能的超高层巨型钢框架结构.
Based on the nonlinear elastic-plastic Pushover analysis of a super-tall huge steel frame structure by using a finite element software,failure modes of different huge steel beam locations and heights are obtained.By comparing maximal displacements of these failure modes,the optimal structure of huge steel frame structure can be obtained.Then,the failed brace of the optimal structure is replaced by the buckling-restrained brace and the failure mode of the new structure is compared with the former failure mode.The analysis results show that the buckling-restrained brace can change the weakest failure mode of the huge steel frame structure,which significantly improves the seismic capacity.When the failure brace is gradually replaced by the buckling-restrained brace,a super-tall huge steel frame structure with optimal economy capability and seismic capacity can be obtained.

引文

[1]陈麟,张耀春,邓雪松.巨型钢结构[M].北京:科学出版社,2007.
    [2]徐国林.巨型梁对巨型钢结构抗震性能影响及优化设计[D].中国地震局工程力学研究所,2005.
    [3]张耀春,张文元.超高层巨型钢结构体系的研究与应用[J].建筑钢结构进展,2005,7(4):19-26.Zhang Yaochun,Zhang Wenyuan.The Study and application of steel structures[J].Progression Steel Building Structures,2005,7(4):19-26.(in Chinese)
    [4]刘建彬.防屈曲支撑及防屈曲支撑钢框架设计理论研究[D].清华大学土木工程系,2005.
    [5]陈煜,舒兴平.防屈曲支撑框架抗震性能研究[J].湖南大学学报:自然科学版,2005,6(32):6-9.Chen Yu,Shu Xingping.Seismic capability research of steel frames with buckling restrained braces[J].Journal of HunanUniversity:Natural Sciences,2005,6(32):6-9.(in Chinese)
    [6]李国强,胡大柱,孙飞飞.屈曲约束支撑铰接钢框架结构体系抗震性能[J].华中科技大学学报,2008,36(12):120-124.Li Guoqiang,Hu Dazhu,Sun Feifei.Seismic behavior of hinge-connected steel frames with buckling restrained braces[J].J Huazhong Univ of Sci&Tech:Natural Science Edition,2008,36(12):120-124.(in Chinese)
    [7]北京金土木软件技术有限公司,中国建筑标准设计研究院.SAP2000中文版使用指南[S].北京:人民交通出版社,2007.
    [8]侯爽,欧进萍.结构Pushover分析的侧向力分布及高阶振型的影响[J].地震工程与工程振动,2004,24(3):89-97.Hou Shuang,Ou Jinping.A study of load pattern selection of Pushover analysis and influence of higher modes[J].Earthquake Engineering and Engineering Vibration,2004,24(3):89-97.(in Chinese)