铅芯橡胶支座微分型恢复力模型屈服前刚度的研究
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摘要
该文简介了微分型恢复力模型(Bouc-Wen模型)的发展过程及其在铅芯橡胶支座中的应用,基于两个不同规格支座的压剪试验比较了不同屈服前刚度K1(K1=5Kd―40Kd)的微分型恢复力模型与实测结果的差异,发现了一些有益的规律。之后,计算分析了一个上部结构为8层的隔震模型,铅芯橡胶支座屈服前刚度K1分别取10Kd―40Kd,对于不同的屈服前刚度K1,上部结构底层的水平刚度分别设为100Kd、300Kd、500Kd,用以比较屈服前刚度K1对不同周期结构的地震响应的影响。通过以上对比和计算,对隔震设计中铅芯橡胶支座屈服前刚度的取值给出了合理建议。
The paper introduces the development of differential restoring model (Bouc-Wen model) and its application in lead rubber bearing. Based on the compression-shear tests of two different LRBs, the differential restoring force model with various pre-yield shear stiffness ranging from 5Kd to 40Kd is considered and compared with the experimental results, and some important conclusions can be drawn from the results. An isolated eight-story super-structure is used as the numerical example. Its pre-yield shear stiffness of the LRB is chosen to be 10Kd and 40Kd, meanwhile the stiffness of the bottom floor of the super-structure is 100Kd, 300Kd and 500Kd for different shear pre-yield stiffness of the LRB. Thus the effect of different pre-yield shear stiffness on the structure with various natural periods can be considered and compared. Finally, a reasonable value of the pre-yield shear stiffness of the lead rubber bearing is given for the design of isolated buildings.
The paper introduces the development of differential restoring model (Bouc-Wen model) and its application in lead rubber bearing. Based on the compression-shear tests of two different LRBs, the differential restoring force model with various pre-yield shear stiffness ranging from 5Kd to 40Kd is considered and compared with the experimental results, and some important conclusions can be drawn from the results. An isolated eight-story super-structure is used as the numerical example. Its pre-yield shear stiffness of the LRB is chosen to be 10Kd and 40Kd, meanwhile the stiffness of the bottom floor of the super-structure is 100Kd, 300Kd and 500Kd for different shear pre-yield stiffness of the LRB. Thus the effect of different pre-yield shear stiffness on the structure with various natural periods can be considered and compared. Finally, a reasonable value of the pre-yield shear stiffness of the lead rubber bearing is given for the design of isolated buildings.
引文
[1]周福霖.工程结构减震控制[M].北京:地震出版社,1997.Zhou Fulin.Seismic control of structures[M].Beijing:Seismological Press,1997.(in Chinese)
[2]Bouc R.Forced vibration of mechanical system with hysteresis,Abstrcat[C].Proceeding of4th conference on nonlinear oscillation.Prague,Czechoslovakia,1967.
[3]Wen Yi-Kwei.Method for random vibration of hysteretic system[J].Journal of the Engineering Mechanics Division,ASCE,1976,102:249―263.
[4]Park Y J,Wen Y K,Ang A H-S.Random vibration of hysteretic systems under bi-directional ground motions[J].Earthquake Engineering and Structural Dynamics,1986,14:543―557.
[5]北京金土木软件技术有限公司.SAP2000中文版使用指南[M].北京:人民交通出版社,2006.Civil King Software Technology Co.,Ltd.Guide of SAP2000-Chinese version[M].Beijing:People’s Communication Press,2006.(in Chinese)
[6]北京金土木软件技术有限公司.ETABS中文版使用指南[M].北京:中国建筑工业出版社,2004.Civil King Software Technology Co.,Ltd.Guide of ETABS-Chinese version[M].Beijing:China Architecture&Building Press,2004.(in Chinese)
[7]ISO22762-3Part3,Elastomeric seisimic-protection isolator-Part3:Application for Buildings[S].2005.
[8]日本建筑学会.隔震结构设计[M].北京:地震出版社,2006.Architectural Institute of Japan.Recommendation for the design of base isolated buildings[M].Beijing:Seismological Press,2006.(in Chinese)
[9]GB50011-2001,建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.GB50011-2001,Code for seismic design of building[S].Beijing:China Architecture&Building Press,2001.(in Chinese)
[10]CECS126:2001,叠层橡胶支座隔震技术规程[S].北京:中国工程建设标准协会,2001.CECS126:2001,Technical specification for seismic isolation with laminated rubber bearing isolators[S].Beijing:China Association for Engineering Construction,2001.(in Chinese)
[2]Bouc R.Forced vibration of mechanical system with hysteresis,Abstrcat[C].Proceeding of4th conference on nonlinear oscillation.Prague,Czechoslovakia,1967.
[3]Wen Yi-Kwei.Method for random vibration of hysteretic system[J].Journal of the Engineering Mechanics Division,ASCE,1976,102:249―263.
[4]Park Y J,Wen Y K,Ang A H-S.Random vibration of hysteretic systems under bi-directional ground motions[J].Earthquake Engineering and Structural Dynamics,1986,14:543―557.
[5]北京金土木软件技术有限公司.SAP2000中文版使用指南[M].北京:人民交通出版社,2006.Civil King Software Technology Co.,Ltd.Guide of SAP2000-Chinese version[M].Beijing:People’s Communication Press,2006.(in Chinese)
[6]北京金土木软件技术有限公司.ETABS中文版使用指南[M].北京:中国建筑工业出版社,2004.Civil King Software Technology Co.,Ltd.Guide of ETABS-Chinese version[M].Beijing:China Architecture&Building Press,2004.(in Chinese)
[7]ISO22762-3Part3,Elastomeric seisimic-protection isolator-Part3:Application for Buildings[S].2005.
[8]日本建筑学会.隔震结构设计[M].北京:地震出版社,2006.Architectural Institute of Japan.Recommendation for the design of base isolated buildings[M].Beijing:Seismological Press,2006.(in Chinese)
[9]GB50011-2001,建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.GB50011-2001,Code for seismic design of building[S].Beijing:China Architecture&Building Press,2001.(in Chinese)
[10]CECS126:2001,叠层橡胶支座隔震技术规程[S].北京:中国工程建设标准协会,2001.CECS126:2001,Technical specification for seismic isolation with laminated rubber bearing isolators[S].Beijing:China Association for Engineering Construction,2001.(in Chinese)
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