基于MPA方法评估结构地震位移需求
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摘要
在模态推覆分析(MPA)基础上,采用能力谱法(CSM),对某高层框—剪结构的地震位移需求进行了评估。首先,回顾了传统模态推覆理论,并提出了采用弹性谱与折减谱线性组合值评估地震位移需求的简化计算方法。然后,用MATLAB编程求解性能点,实现了能力谱法分析。最后,基于弹性谱和折减谱,采用提出的方法分别研究了不同地震峰值加速度(PGA)下结构地震位移需求,并与时程分析进行了对比,得到了误差包络图,说明简化方法对某高层框—剪结构具有良好适用性。
Using the capacity spectrum method( CSM),seismic displacement demands for a high-rise frame-shear wall building were estimated based on a modal pushover procedure. The theories of MPA method were reviewed,a novel method with linear combination of both elastic and reduced response spectrum results was developed. Then the capacity spectrum method was conducted through the performance points calculated by MATLAB programme. At last,displacement demands under various PGA were respectively estimated. Envelops of all errors were drawn compared to the time history analysis results to demonstrate the applicability of the novel method.
Using the capacity spectrum method( CSM),seismic displacement demands for a high-rise frame-shear wall building were estimated based on a modal pushover procedure. The theories of MPA method were reviewed,a novel method with linear combination of both elastic and reduced response spectrum results was developed. Then the capacity spectrum method was conducted through the performance points calculated by MATLAB programme. At last,displacement demands under various PGA were respectively estimated. Envelops of all errors were drawn compared to the time history analysis results to demonstrate the applicability of the novel method.
引文
[1]ATC-40.Seismic evaluation and retrofit of concrete buildings.Redwood City,CA,USA,1996.
[2]FEMA-273.NEHRP guidelines for the seicmic rehabilitation of buildings,FEMA,Washington,D.C,USA,1997.
[3]COLA-1995.Earthquake hazard reduction in existing reinforced concrete buildings and concrete frame buildings with masonry infills.City of Los Angeles,January 31,1995.
[4]毛建猛,谢礼立,翟长海.模态pushover分析方法的研究和改进[J].地震工程与工程振动,2006,26(6):50-55.MAO Jianmeng,XIE Lili,ZHAI Changhai.Studies on and improvements in modal pushover analysis[J].Earthquake Engineering And Engineering Vibration,2006,26(6):50-55.(in Chinese)
[5]包宇.基于性能的隔震结构抗震性能评价[D].武汉:华中科技大学,2014.BAO Yu.Performance-based seismic evaluation of isolated buildings[D].Wuhan:Huazhong University of Science and Technology,2014.(in Chinese)
[6]Chopra A.K,Goel R.A modal pushover analysis procedure for estimating seismic demands for buildings.[J]Earthquake Engineering and Structural Dynamics,2002(31):561-582.
[7]Chopra A.K,Goel R.A modal pushover analysis procedure to estimate seismic demands for buildings:theory and preliminary evaluation.Report No.PEER 200/03,Pacfic Earthquake Engineering Research Center,University of California,Berkeley,CA,2001.
[8]Mehdi Poursha,Faramarz Khoshnoudian,Moghadam A.S.A consecutive modal pushover procedure for nonlinear static analysis of one-way unsymmetric-plan tall building structures[J].Engineering Structures,2011,33(9):2417-2434.
[9]Chopra A.K.Dynamic of structures:Theory and Application to Earthquake Engineering(Second Edition)[M].New Jersey:PRENTICE HALL,Englewood Cliffs,2001.
[2]FEMA-273.NEHRP guidelines for the seicmic rehabilitation of buildings,FEMA,Washington,D.C,USA,1997.
[3]COLA-1995.Earthquake hazard reduction in existing reinforced concrete buildings and concrete frame buildings with masonry infills.City of Los Angeles,January 31,1995.
[4]毛建猛,谢礼立,翟长海.模态pushover分析方法的研究和改进[J].地震工程与工程振动,2006,26(6):50-55.MAO Jianmeng,XIE Lili,ZHAI Changhai.Studies on and improvements in modal pushover analysis[J].Earthquake Engineering And Engineering Vibration,2006,26(6):50-55.(in Chinese)
[5]包宇.基于性能的隔震结构抗震性能评价[D].武汉:华中科技大学,2014.BAO Yu.Performance-based seismic evaluation of isolated buildings[D].Wuhan:Huazhong University of Science and Technology,2014.(in Chinese)
[6]Chopra A.K,Goel R.A modal pushover analysis procedure for estimating seismic demands for buildings.[J]Earthquake Engineering and Structural Dynamics,2002(31):561-582.
[7]Chopra A.K,Goel R.A modal pushover analysis procedure to estimate seismic demands for buildings:theory and preliminary evaluation.Report No.PEER 200/03,Pacfic Earthquake Engineering Research Center,University of California,Berkeley,CA,2001.
[8]Mehdi Poursha,Faramarz Khoshnoudian,Moghadam A.S.A consecutive modal pushover procedure for nonlinear static analysis of one-way unsymmetric-plan tall building structures[J].Engineering Structures,2011,33(9):2417-2434.
[9]Chopra A.K.Dynamic of structures:Theory and Application to Earthquake Engineering(Second Edition)[M].New Jersey:PRENTICE HALL,Englewood Cliffs,2001.
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