某轻型钢框架抗震性能分析
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摘要
轻型钢框架是一种在国内外得到广泛应用的结构体系,具有安全、节能环保、经济、适用等优点。目前,国内外对这种结构形式的静力性能研究较多,对其动力性能研究较少,对其结构抗震性能综合评估的研究就更少。运用有限元软件MIDAS7.3.0,分别采用振型分解反应谱法、时程分析法、静力弹塑性分析法(Pushover法),对某轻型钢框架的动力及抗震性能进行评价,研究了该轻型钢框架在多遇及罕遇地震作用下的变形与受力性能、薄弱层的出现和破坏规律,结果表明该结构满足小震不坏、中震可修、大震不倒的抗震设防要求,可为此种结构体系在类似工程中的应用提供借鉴。
Light-weight steel frame structure is a kind of structure system which has been widely used all over the world.It has a lot of advantages,such as,safety,energy-efficiency,environment protection,economical efficiency and so on.At present,much research concentrates on static behavior of this structure,but dynamic behavior is not investigated deeply,few comprehensive papers about the seismic performance of the structure can be found.In this paper,a light-weight steel frame with swing columns,a new structure system was analyzed.The dynamic characters and seismic behaviors were investigated by using response spectrum method,time-history method and Pushover method respectively.The finite element software MIDAS7.3.0 was adopted.At the same time,the deformation and load bearing capacity of the light-weight steel frame under frequent earthquakes was computed.The emergence and failure mechanism of weak story were discussed under rare earthquakes.The results show that the structure can meet the requirement of no-damage under frequent earthquakes,repairable under moderate earthquakes,and no-collapse under rare earthquakes.It provides some valuable suggestions for using this structural system in the similar engineering.
Light-weight steel frame structure is a kind of structure system which has been widely used all over the world.It has a lot of advantages,such as,safety,energy-efficiency,environment protection,economical efficiency and so on.At present,much research concentrates on static behavior of this structure,but dynamic behavior is not investigated deeply,few comprehensive papers about the seismic performance of the structure can be found.In this paper,a light-weight steel frame with swing columns,a new structure system was analyzed.The dynamic characters and seismic behaviors were investigated by using response spectrum method,time-history method and Pushover method respectively.The finite element software MIDAS7.3.0 was adopted.At the same time,the deformation and load bearing capacity of the light-weight steel frame under frequent earthquakes was computed.The emergence and failure mechanism of weak story were discussed under rare earthquakes.The results show that the structure can meet the requirement of no-damage under frequent earthquakes,repairable under moderate earthquakes,and no-collapse under rare earthquakes.It provides some valuable suggestions for using this structural system in the similar engineering.
引文
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[6]王亚永.关于设计反应谱、时程法和能量方法的探讨[J].建筑结构学报,2000,21(1):21-28.Wang Y Y.A reviewof seismic response spectra,timehistory analysis and energy method[J].Journal ofBuilding Structures,2000,21(1):21-28.(inChinese)
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[11]Atc-40.Seismic Evaluation and Retrofit of ConcreteBuilding[R].Report No.Atc-40.Applied TechnologyCouncil,Redwood City,California,1996.
[12]Federal Emergency Management Agency,NehrpGuidelines for the Seismic Rehabilitation of Buildings[S].Fema273,Chapter3,11-15,1997.
[13]中华人民共和国建设部.GB 50011—2001建筑抗震设计规范[M].北京:中国建筑工业出版社,2008.Ministry of Construction of the People’S Republic ofChina.GB 50011—2001 Code for Seismic Design ofBuildings[S].Beijing:China Architecture&BuildingPress,2001.(in Chinese)
[14]马人乐,赵林,何敏娟.大型超高钢结构电视塔抗震性能分析[J].同济大学学报(自然科学版),2007,35(10):1310-1315.Ma R L,Zhao L,He M J.Earthquake resistantbehavior of super high-rising steel tower[J].Journalof Tongji University(Nature Science),2007,35(10):1310-1315.(in Chinese)
[15]王元清,黄怡,石永久,等.超高层钢结构建筑动力特性与抗震性能的有限元分析[J].土木工程学报,2006,39(5):65-71.Wang Y Q,Huang Y,Shi Y J,et al.Finite elementanalysis on dynamic characteristics and seismicresistance of super high-rise steel structures[J].China Civil Engineering Journal,2006,39(5):65-71.(in Chinese)
[16]王飞,罗永峰,宋怀金.上海金虹桥国际中心静力弹塑性(Pushover)分析[J].工业建筑,2008(增刊):1717-1722.Wang F,Luo Y F,Song HJ.The pushover analysis ofShanghai gold rainbow international center[J].Industrial Construction,2008(Supplement):1717-1722.(in Chinese)
[17]汪大绥,贺军利,张风新.静力弹塑性分析(Pushover Analysis)的基本原理和计算实例[J].世界地震工程,2004,29(1):45-53.Wang D S,He J L,Zhang F X.The basic principleand a case study of the static elastoplastic analysis[J].World Earthquake Engineering,2004,29(1):45-53.(in Chinese)
[2]黄怡,王元清,陈宏,等.多层轻钢框架结构的抗震性能分析[J].工业建筑,2006,36(12):73-75.Huang Y,Wang Y Q,Cheng H,et al.Analysis ofaseismic properties of light weight steel multi-storystructure[J].Industrial Construction,2006,36(12):73-75.(in Chinese)
[3]黄炳生,舒赣平,吕志涛.多层轻钢框架的地震时程分析[J].工业建筑,2001,31(8):5-7.Huang B S,Shu G P,Lu Z T.Earthquake time historyanalysis for multistory light steel frames[J].IndustrialConstruction,2001,31(8):5-7.(in Chinese)
[4]李杰,李国强.地震工程学导论[M].北京:地震工程出版社,1992.Li J,Li G W.Direction for earthquake engineering[M].Beijing:Earthquake Press,1992.(in Chinese)
[5]王亚勇,戴国莹.建筑抗震设计规范疑问解答[M].北京:中国建筑工业出版社,2006.Wang Y Y,Dai G Y.Dount and explanation of codefor seismic design of buildings[M].Beijing:ChinaArchitecture&Building Press,2006.(in Chinese)
[6]王亚永.关于设计反应谱、时程法和能量方法的探讨[J].建筑结构学报,2000,21(1):21-28.Wang Y Y.A reviewof seismic response spectra,timehistory analysis and energy method[J].Journal ofBuilding Structures,2000,21(1):21-28.(inChinese)
[7]Neumark N M,Hall W J.Earthquake Spectra andDesign[M].Erri,1982.
[8]Ohaski Y.On the significance of phase content ineatthquake ground motions[J].EESD,1979,7(5).
[9]Seki M.Nonlinear earthquake response test oftorsionally coupled reinforced concrete buildingsframes[C].Pro of 8thWCEEM,1984.
[10]Chen Y.Inelastic Behavior of Steel FramesConsidering Varying Combined Stress in The Members[D].Tokyo:Uni of Tokyo,1994.
[11]Atc-40.Seismic Evaluation and Retrofit of ConcreteBuilding[R].Report No.Atc-40.Applied TechnologyCouncil,Redwood City,California,1996.
[12]Federal Emergency Management Agency,NehrpGuidelines for the Seismic Rehabilitation of Buildings[S].Fema273,Chapter3,11-15,1997.
[13]中华人民共和国建设部.GB 50011—2001建筑抗震设计规范[M].北京:中国建筑工业出版社,2008.Ministry of Construction of the People’S Republic ofChina.GB 50011—2001 Code for Seismic Design ofBuildings[S].Beijing:China Architecture&BuildingPress,2001.(in Chinese)
[14]马人乐,赵林,何敏娟.大型超高钢结构电视塔抗震性能分析[J].同济大学学报(自然科学版),2007,35(10):1310-1315.Ma R L,Zhao L,He M J.Earthquake resistantbehavior of super high-rising steel tower[J].Journalof Tongji University(Nature Science),2007,35(10):1310-1315.(in Chinese)
[15]王元清,黄怡,石永久,等.超高层钢结构建筑动力特性与抗震性能的有限元分析[J].土木工程学报,2006,39(5):65-71.Wang Y Q,Huang Y,Shi Y J,et al.Finite elementanalysis on dynamic characteristics and seismicresistance of super high-rise steel structures[J].China Civil Engineering Journal,2006,39(5):65-71.(in Chinese)
[16]王飞,罗永峰,宋怀金.上海金虹桥国际中心静力弹塑性(Pushover)分析[J].工业建筑,2008(增刊):1717-1722.Wang F,Luo Y F,Song HJ.The pushover analysis ofShanghai gold rainbow international center[J].Industrial Construction,2008(Supplement):1717-1722.(in Chinese)
[17]汪大绥,贺军利,张风新.静力弹塑性分析(Pushover Analysis)的基本原理和计算实例[J].世界地震工程,2004,29(1):45-53.Wang D S,He J L,Zhang F X.The basic principleand a case study of the static elastoplastic analysis[J].World Earthquake Engineering,2004,29(1):45-53.(in Chinese)
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