地震动选择及输入顺序在振动台试验中的应用研究
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摘要
振动台试验中,经过相似理论设计的缩尺模型,经历一系列特定顺序地震波的输入,激励起模型结构的动力非线性行为,来研究和评价结构的抗震性能。因此对于表现出非线性行为的模型结构来说,振动台试验是个不可逆过程。因此如何选择地震波,以及如何确定地震波的输入顺序,对振动台试验成功与否,显得尤为重要。重点介绍振动台试验的选波方法以及地震波的输入顺序,并将该方法应用到再生混凝土框架模型振动台试验,通过试验结果验证了该方法的正确性。试验结果表明,通过该方法选波,能准确合理地评价结构的抗震行为。
In shaking table tests,the scaled-down model designed through the theory of similarity is excited by the selected earthquake waves in a specified sequence to the nonlinear stage in order to study and evaluate the structural seismic performances.Due to the nonlinear history of the model,shaking table test is an irreversible process.Then how to select the input and determine the input sequence is very important to the success of the shaking table test.This paper puts forward the method of wave selection and determination of the input sequence.The shaking table test of a recycled reinforced concrete frame is used to verify the method.The experimental results show that the seismic performance of the structure could be accurately evaluated by the selected waves.
In shaking table tests,the scaled-down model designed through the theory of similarity is excited by the selected earthquake waves in a specified sequence to the nonlinear stage in order to study and evaluate the structural seismic performances.Due to the nonlinear history of the model,shaking table test is an irreversible process.Then how to select the input and determine the input sequence is very important to the success of the shaking table test.This paper puts forward the method of wave selection and determination of the input sequence.The shaking table test of a recycled reinforced concrete frame is used to verify the method.The experimental results show that the seismic performance of the structure could be accurately evaluated by the selected waves.
引文
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[12]中华人民共和国住房和城乡建设部.GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urbon-Rural Development ofthe People's Republic of China.GB 50011—2010Code for seismic design of buildings[S].Beijing:China Architecture&Building Press,2010.(in Chi-nese)
[2]王亚勇,戴国莹.《建筑抗震设计规范》的发展沿革和最新修订[J].建筑结构学报,2010,31(6):2-16.Wang Yayong,Dai Guoying.Evolution and presentupdation of‘Code for seismic design of buildings’[J].Journal of Building Structures,2010,31(6):2-16.(in Chinese)
[3]王亚勇.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):71-76.Wang Yayong.A review of response spectra,timehistory analysis and energy method[J].Journal ofBuilding Structures,2000,21(1):71-76.(in Chi-nese)
[4]曲哲,叶列平,潘鹏.建筑结构弹塑性时程分析中地震动记录选取方法的比较研究[J].土木工程学报,2011,44(7):10-21.Qu Zhe,Ye Lieping,Pan Peng.Comparative studyon methods of selecting earthquake ground motions fornonlinear time history analyses of building structures[J].China Civil Engineering Journal,2011,44(7):10-21.(in Chinese)
[5]Jayaram N,Lin T,and Baker J W.A computational-ly efficient ground-motion selection algorithm for matc-hing a target response spectrum mean and variance[J].Earthquake Spectra,2011,27(3):797-815.
[6]Baker J W.Conditional Mean Spectrum:Tool forground motion selection[J].Journal of Structural En-gineering,2011,137(3):322-331.
[7]Baker J W,Jayaram N.Correlation of spectral accel-eration values from NGA ground motion models[J].Earthquake Spectra,2008,24(1):299-317.
[8]杨溥,李英民,赖明.结构时程分析法输入地震波的选择控制指标[J].土木工程学报,2000,33(6):33-37.Yang Pu,Li Yingmin,Lai Ming.A new method forselecting inputting waves for time history analysis[J].China Civil Engineering Journal,2000,33(6):33-37.(in Chinese)
[9]邓军,唐家祥.时程分析法输入地震记录的选择与实例[J].工业建筑,2000,30(8):9-12.Deng Jun,Tang Jiaxiang.Choice and measurement ofseismic records for time-history analysis[J].Industri-al Construction,2000,30(8):9-12.(in Chinese)
[10]谢礼立,翟长海.最不利设计地震动研究[J].地震学报,2003,25(3):250-261.Xie Lili,Zhai Changhai.Study on the severest realground motion for seismic design and analysis[J].Acta Seismologica Sinica,2003,25(3):250-261.(in Chinese)
[11]翟长海,谢礼立.抗震结构最不利设计地震动研究[J].土木工程学报,2005,38(12):51-58.Zhai Changhai,Xie Lili.The severest design groundmotion for seismic design and analysis of structure[J].China Civil Engineering Journal,2005,38(12):51-58.(in Chinese)
[12]中华人民共和国住房和城乡建设部.GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urbon-Rural Development ofthe People's Republic of China.GB 50011—2010Code for seismic design of buildings[S].Beijing:China Architecture&Building Press,2010.(in Chi-nese)
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