钢支撑滞回模型及防倒塌加固效果分析
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摘要
提出了一个基于18参数的钢支撑滞回模型,可准确模拟普通钢支撑的滞回行为。以一典型RC框架教学楼的钢支撑加固为例,通过推覆分析和基于动力增量分析(IDA)的倒塌易损性分析,研究了普通钢支撑加固的效果。
In this paper,a hysteretic model of conventional steel brace based on 18 parameters is put forward.The model could simulate the hysteretic behavior of conventional steel brace accurately.Then a typical RC frame that was closed to the epicenter and collapsed during Wenchuan Earthquake is analyzed.Push-over analysis and collapse fragility analysis based on incremental dynamic analysis are implemented to discuss the strengthening effect with steel braces.The result could be referred for the seismic collapse prevention design of RC frames.
In this paper,a hysteretic model of conventional steel brace based on 18 parameters is put forward.The model could simulate the hysteretic behavior of conventional steel brace accurately.Then a typical RC frame that was closed to the epicenter and collapsed during Wenchuan Earthquake is analyzed.Push-over analysis and collapse fragility analysis based on incremental dynamic analysis are implemented to discuss the strengthening effect with steel braces.The result could be referred for the seismic collapse prevention design of RC frames.
引文
[1]GB50011-2001,建筑抗震设计规范[S]GB 50011-2001,Code for Seismic Design of Buildings[S](in Chinese)
[2]清华大学、西南交通大学、北京交通大学土木工程结构专家组.汶川地震建筑震害分析[J].建筑结构学报,2008,29(4):1～9Civil and Structural Groups of Tsinghua University,Xinan Jiaotong University and Beijing JiaotongUniversity.Analysis on Building Seismic Damage inWenchuan Earthquake[J].,Journal of BuildingStructures,2008,29(4):1～9(in Chinese)
[3]叶列平,陆新征,赵世春,李易.框架结构抗地震倒塌能力的研究——汶川地震极震区几个框架结构震害案例的分析[J].建筑结构学报,2009,30(6):67～76Ye L P,Lu X Z,Zhao S C,Li Y,Seismic collapseresistance of RC frame structures———Case studies onthe seismic damage of several RC frame structures underextreme ground motion in Wenchuan Earthquake[J].Journal of Building Structures,2009,30(6):67～76(in Chinese)
[4]陆新征,叶列平.基于IDA分析的结构抗地震倒塌能力研究[J].工程抗震与加固改造,2010,32(1):13～18Lu X Z,Ye L P.Study on the seismic collapseresistance of structural system[J].EarthquakeResistant Engineering and Retrofitting,2010,32(1):13～18(in Chinese)
[5]连尉安,张耀春.钢支撑滞回性能模拟及疲劳寿命评估[J].钢结构,2002,(增刊):350～355Lian W A,Zhang Y C.Hysteretic behavior simulationand fatigue life prediction for the steel brace[J],SteelStructures,2002,(Sup.):350～355(in Chinese)
[6]申林.高层结构钢支撑滞回性能分析及抗震设计对策[D].西安:西安建筑科技大学,2001Shen L.Hysteretic behavior and design criterion of steelbraces in high-rise building under cycle loading[D].Xi’an:Xi’an University of Architecture andTechnology,2001(in Chinese)
[7]Alexander M Remennkov,Warren R Walpole.Modelingthe inelastic cyclic behaviour of a bracing member forwork-hardening material[J].International Journal ofSolids and Structures,1997,34(27):3491～3515
[8]Ali Davaran,Narges Easazadeh Far.An inelastic modelfor low cycle fatigue prediction in steel braces[J].Journal of Constructional Steel Research,2009,65(3):523～530
[9]Murat Dicleli,Ertugrul Emre Calik.Physical Theoryhysteretic model for steel braces[J].Journal ofStructural Engineering,2007,134(7):1215～1228
[10]Jun Jin,Sherif El-Tawil.Inelastic cyclic model for steelbraces[J].Journal of Engineering Mechanics,2003,129(5):548～557
[11]Nariman M Haroun,Robin Shepherd.Inelastic behaviorof X-bracing in plane frames[J].Journal of StructuralEngineering,1986,112(4):764～780
[12]Ikeda K,Mahin S A.Cyclic response of steel braces[J].Journal of Structural Engineering,1986,112(2):342～361
[13]李国强,谢卫兵,沈祖炎.高层支撑钢框架弹塑性地震反应简化分析模型[J].建筑结构,1996,(11):3～6Li G Q,Xie W B,Shen Z Y.Simplified analyticalmodel for the elasto-plastic analysis of high-rise bracedsteel frame[J].Building Structures,1996,(11):3～6(in Chinese)
[14]陆新征,叶列平,缪志伟.建筑抗震弹塑性分析[M].北京:中国建筑工业出版社,2009Lu X Z,Ye L P,Miao Z W.Elasto-plastic Analysis ofBuildings Against Earthquake[M].Beijing:ChinaArchitecture and Building Press,2009(in Chinese)
[15]Goggins J M,Broderick B M,Elghazouli A Y,Lucas AS.Experimental cyclic response of cold-formed hollowsteel bracing members[J].Engineering Structures,2005,27:977～989
[16]马玉虎.汶川地震典型框架结构震害分析和防倒塌对策研究[D].北京:清华大学,2010Ma Y H.Seismic damage simulation and collapseresistance strategies of typical RC frames during theGreat Wenchuan Earthquake[D].Beijing:TsinghuaUniversity,2010(in Chinese)
[17]Quantification of building seismic performance factors[S].ATC-63 Project Report(90%Draft),FEMAP695/April 2008
[18]Bousalem B,Chikh N.Development of a confined modelfor rectangular ordinary reinforced concrete columns[J].Materials and Structures,2007,40:605～613
[2]清华大学、西南交通大学、北京交通大学土木工程结构专家组.汶川地震建筑震害分析[J].建筑结构学报,2008,29(4):1～9Civil and Structural Groups of Tsinghua University,Xinan Jiaotong University and Beijing JiaotongUniversity.Analysis on Building Seismic Damage inWenchuan Earthquake[J].,Journal of BuildingStructures,2008,29(4):1～9(in Chinese)
[3]叶列平,陆新征,赵世春,李易.框架结构抗地震倒塌能力的研究——汶川地震极震区几个框架结构震害案例的分析[J].建筑结构学报,2009,30(6):67～76Ye L P,Lu X Z,Zhao S C,Li Y,Seismic collapseresistance of RC frame structures———Case studies onthe seismic damage of several RC frame structures underextreme ground motion in Wenchuan Earthquake[J].Journal of Building Structures,2009,30(6):67～76(in Chinese)
[4]陆新征,叶列平.基于IDA分析的结构抗地震倒塌能力研究[J].工程抗震与加固改造,2010,32(1):13～18Lu X Z,Ye L P.Study on the seismic collapseresistance of structural system[J].EarthquakeResistant Engineering and Retrofitting,2010,32(1):13～18(in Chinese)
[5]连尉安,张耀春.钢支撑滞回性能模拟及疲劳寿命评估[J].钢结构,2002,(增刊):350～355Lian W A,Zhang Y C.Hysteretic behavior simulationand fatigue life prediction for the steel brace[J],SteelStructures,2002,(Sup.):350～355(in Chinese)
[6]申林.高层结构钢支撑滞回性能分析及抗震设计对策[D].西安:西安建筑科技大学,2001Shen L.Hysteretic behavior and design criterion of steelbraces in high-rise building under cycle loading[D].Xi’an:Xi’an University of Architecture andTechnology,2001(in Chinese)
[7]Alexander M Remennkov,Warren R Walpole.Modelingthe inelastic cyclic behaviour of a bracing member forwork-hardening material[J].International Journal ofSolids and Structures,1997,34(27):3491～3515
[8]Ali Davaran,Narges Easazadeh Far.An inelastic modelfor low cycle fatigue prediction in steel braces[J].Journal of Constructional Steel Research,2009,65(3):523～530
[9]Murat Dicleli,Ertugrul Emre Calik.Physical Theoryhysteretic model for steel braces[J].Journal ofStructural Engineering,2007,134(7):1215～1228
[10]Jun Jin,Sherif El-Tawil.Inelastic cyclic model for steelbraces[J].Journal of Engineering Mechanics,2003,129(5):548～557
[11]Nariman M Haroun,Robin Shepherd.Inelastic behaviorof X-bracing in plane frames[J].Journal of StructuralEngineering,1986,112(4):764～780
[12]Ikeda K,Mahin S A.Cyclic response of steel braces[J].Journal of Structural Engineering,1986,112(2):342～361
[13]李国强,谢卫兵,沈祖炎.高层支撑钢框架弹塑性地震反应简化分析模型[J].建筑结构,1996,(11):3～6Li G Q,Xie W B,Shen Z Y.Simplified analyticalmodel for the elasto-plastic analysis of high-rise bracedsteel frame[J].Building Structures,1996,(11):3～6(in Chinese)
[14]陆新征,叶列平,缪志伟.建筑抗震弹塑性分析[M].北京:中国建筑工业出版社,2009Lu X Z,Ye L P,Miao Z W.Elasto-plastic Analysis ofBuildings Against Earthquake[M].Beijing:ChinaArchitecture and Building Press,2009(in Chinese)
[15]Goggins J M,Broderick B M,Elghazouli A Y,Lucas AS.Experimental cyclic response of cold-formed hollowsteel bracing members[J].Engineering Structures,2005,27:977～989
[16]马玉虎.汶川地震典型框架结构震害分析和防倒塌对策研究[D].北京:清华大学,2010Ma Y H.Seismic damage simulation and collapseresistance strategies of typical RC frames during theGreat Wenchuan Earthquake[D].Beijing:TsinghuaUniversity,2010(in Chinese)
[17]Quantification of building seismic performance factors[S].ATC-63 Project Report(90%Draft),FEMAP695/April 2008
[18]Bousalem B,Chikh N.Development of a confined modelfor rectangular ordinary reinforced concrete columns[J].Materials and Structures,2007,40:605～613
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