基于强震观测的隔震结构地震反应分析
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摘要
福建省防灾减灾中心大楼是一栋高约40m,安装有强震观测系统的隔震大楼,目前该结构台阵已记录到30多次地震引起的大楼地震反应。本文利用具有强大非线性功能的ETABS软件建立大楼结构模型,同时考虑隔震结构的楼梯和填充墙对结构地震反应的影响,并利用台阵记录验证大楼结构模型线弹性地震反应的可靠性,说明隔震大楼结构模型能很好地模拟大楼的地震反应过程。在此基础上结合大楼原型动力性能实验的实测参数,以大楼自由场地的三个实际地震记录作为输入,对大楼在中小地震作用下非线性地震反应进行分析,结果表明大楼具有良好的隔震效果。
The base-isolated building of Fujian Province Earthquake Administration is an about 40 meters high building,in which a strong seismic motion observation system has been installed since August 2005.We have obtained earthquakes records more than 30 times from the strong seismic motion real-time observation system until now.Using ETABS software to analyze the dynamic responses of the building,we consider the effect of stairs and filled wall on the seismic elastic responses of the building and compare the records with those calculated on the basis of ETABS software,and the results show that the structural model is reliable.Three earthquake records observed at free field of the building are chosen as seismic inputs and we consider the results of dynamic test of the building and analyze the seismic nonlinear responses of the building under small and middle earthquake actions.The results show that the isolation effect is significant.
The base-isolated building of Fujian Province Earthquake Administration is an about 40 meters high building,in which a strong seismic motion observation system has been installed since August 2005.We have obtained earthquakes records more than 30 times from the strong seismic motion real-time observation system until now.Using ETABS software to analyze the dynamic responses of the building,we consider the effect of stairs and filled wall on the seismic elastic responses of the building and compare the records with those calculated on the basis of ETABS software,and the results show that the structural model is reliable.Three earthquake records observed at free field of the building are chosen as seismic inputs and we consider the results of dynamic test of the building and analyze the seismic nonlinear responses of the building under small and middle earthquake actions.The results show that the isolation effect is significant.
引文
[1]胡聿贤.地震工程学[M].北京:地震出版社,2006.
[2]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
[3]周福霖.工程结构隔震减震研究进展[M].北京:地震出版社,2004.
[4]日本建筑学会.隔震结构设计[M].刘文光译,北京:地震出版社,2006.
[5]建筑防震减灾技术研究鉴定资料[G].福州:福州市规划设计研究院,2006.
[6]建筑防震减灾技术研究报告[R].福州:福州市规划设计研究院,2006.
[7]福建省防震减灾中心大楼橡胶隔震支座力学性能检测报告[R].广州:广州大学工程抗震研究中心,2003.
[8]韦永祥.基于强震和风振记录分析隔震结构的动力特性[D].哈尔滨:中国地震局工程力学研究所,2006.
[9]金星,韦永祥,陈学良,等.隔震建筑结构的强震观测与初步分析[J].地震工程与工程振动,2007,27(6):181-188.
[10]李鸿晶,朱士云,Celebi M.强震观测建筑结构的强地震反应分析[J].地震工程与工程振动,2003,23(6):31-36.
[11]董军,刘伟庆,王曙光,等,宿迁市文体馆基础隔震非线性时程分析研究[J].地震工程与工程振动,2002,22(6):103-108.
[12]Celebi M.Identification of site frequencies from building records[J].Earthquake Spectra,2003,19(1):1-23.
[13]Toshihide Kashima,Akihiro Itou,Hisashi Fujita.Dynamic behavior of a 9-story base-Isolated building during the 2003 Off Tokachi Earthquake,Japan[C]//Proceedings Third UJNR Workshop on Soil-Structure Interaction,Menlo Park,California,USA.2004.
[2]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
[3]周福霖.工程结构隔震减震研究进展[M].北京:地震出版社,2004.
[4]日本建筑学会.隔震结构设计[M].刘文光译,北京:地震出版社,2006.
[5]建筑防震减灾技术研究鉴定资料[G].福州:福州市规划设计研究院,2006.
[6]建筑防震减灾技术研究报告[R].福州:福州市规划设计研究院,2006.
[7]福建省防震减灾中心大楼橡胶隔震支座力学性能检测报告[R].广州:广州大学工程抗震研究中心,2003.
[8]韦永祥.基于强震和风振记录分析隔震结构的动力特性[D].哈尔滨:中国地震局工程力学研究所,2006.
[9]金星,韦永祥,陈学良,等.隔震建筑结构的强震观测与初步分析[J].地震工程与工程振动,2007,27(6):181-188.
[10]李鸿晶,朱士云,Celebi M.强震观测建筑结构的强地震反应分析[J].地震工程与工程振动,2003,23(6):31-36.
[11]董军,刘伟庆,王曙光,等,宿迁市文体馆基础隔震非线性时程分析研究[J].地震工程与工程振动,2002,22(6):103-108.
[12]Celebi M.Identification of site frequencies from building records[J].Earthquake Spectra,2003,19(1):1-23.
[13]Toshihide Kashima,Akihiro Itou,Hisashi Fujita.Dynamic behavior of a 9-story base-Isolated building during the 2003 Off Tokachi Earthquake,Japan[C]//Proceedings Third UJNR Workshop on Soil-Structure Interaction,Menlo Park,California,USA.2004.
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