巨型钢框撑-组合钢板墙筒体结构地震易损性分析
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摘要
巨型钢框撑-组合钢板墙筒体结构是由巨型钢框架、巨型支撑、组合钢板墙核心筒和伸臂桁架组成的新型超高层结构体系。利用ABAQUS软件建立这种结构体系的计算模型,基于增量动力分析方法得到结构的易损性曲线,对结构的易损性能进行评估和分析。结果表明:巨型钢框撑-组合钢板墙筒体结构在设防烈度大震作用下发生倒塌破坏的概率较小,结构具有良好的抗震性能。巨型支撑可有效控制结构地震作用下的位移反应,减小各损伤状态的超越概率,提高结构的抗倒塌安全储备。
Mega steel braced frame-composite steel plate shear wall structure is an innovative hybrid structural system for super high-rise buildings,which consists of mega steel frame,mega braces,composite steel plate core wall and outriggers.Finite element model of this type of structure was conducted by soft ware ABAQUS.Structural fragility curves based on incremental dynamic analysis was obtained.The collapse probability of this hybrid structure is relatively small that imply its adequate seismic capacity under strong earthquakes.Displacement response as well as exceed probabilities relevant to different damage criterions can be reduced effectively by using mega braces,then the collapse resistant capacity of structure can be improved.
Mega steel braced frame-composite steel plate shear wall structure is an innovative hybrid structural system for super high-rise buildings,which consists of mega steel frame,mega braces,composite steel plate core wall and outriggers.Finite element model of this type of structure was conducted by soft ware ABAQUS.Structural fragility curves based on incremental dynamic analysis was obtained.The collapse probability of this hybrid structure is relatively small that imply its adequate seismic capacity under strong earthquakes.Displacement response as well as exceed probabilities relevant to different damage criterions can be reduced effectively by using mega braces,then the collapse resistant capacity of structure can be improved.
引文
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[6]吕大刚,于晓辉,王光远.基于单地震动记录IDA方法的结构倒塌分析[J].地震工程与工程振动,2009,29(6):33-38(Lu Dagang,Yu Xiaohui,Wang Guangyuan.Structural collapse analysis based on single-record IDAmethod[J].Journal and Earthquake Engineering andEngineering Vibration,2009,29(6):33-38(in Chinese))
[7]GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010(GB 50011—2010,Code for seismicdesign of buildings[S].Beijing:China Architecture andBuilding Press,2010(in Chinese)
[8]吕大刚,李晓鹏,王光远.基于可靠度和性能的结构整体地震易损性分析[J].自然灾害学报,2006,15(2):107-114(Lu Dagang,Li Xiaopeng,Wang Guangyuan.Global seismic fragility analysis of structures based onreliability and performance[J].Journal of NaturalDisasters,2006,15(2):107-114(in Chinese))
[9]卜一,吕西林,周颖,等.采用增量动力分析方法确定高层混合结构的性能水准[J].结构工程师,2009,25(2):77-84(Bo Yi,Lu Xilin,Zhou Ying,et al.Studies onthe multi-levels of hybrid structures using incrementaldynamic analysis[J].Structural Engineers,2009,25(2):77-84(in Chinese))
[10]JGJ 3—2010高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2010(JGJ 3—2010 Technicalspecification for concrete structures of tall building[S].Beijing:China Architecture and Building Press,2010(inChinese))
[11]刘星,陈麟,周云.钢框架-钢筋混凝土核心筒结构在强震作用下的性能分析[J].钢结构,2010,25(3):9-14(Liu Xing,Chen Lin,Zhou Yun.Study on seismicperformance of steel frame and RC core-wall structure understrong earthquake[J].Steel Construction,2010,25(3):9-14(in Chinese))
[12]胡晓.巨型钢框撑-组合钢板剪力墙筒体结构基于性能的抗震分析[D].广州大学,2011(Hu Xiao.Performance-based seismic analysis of mega steel bracedframe-composite steel plate shear wall structure[D].Guangzhou University,2011(in Chinese))
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