大型变电站在近断层地震动作用下的地震反应分析
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摘要
结合近断层地震动特征,针对我国变电站量大面广的特点,建立了考虑变电站主体结构-电气设备相互作用的三维动力分析模型;选取多条实际近断层地震动记录作为地震动输入,采用非线性动力时程分析方法对大型变电站进行地震反应分析,并与远断层地震动作用下的地震反应结果进行了对比分析。结果表明,大型变电站在近断层地震动作用下的地震反应大于远断层地震动作用下的结果,该类建筑物对近断层地震动的作用较敏感,近断层处变电站的地震破坏影响程度更大。此外,还分析了近断层地震动作用下采用隔震技术的变电站地震反应,发现其抗震性能优于未采用隔震措施的变电站,即隔震技术适用于建造在近断层附近的变电站。
Combining with the characteristics of near-fault ground motions,and according to the specific conditions in China,a three dimensions dynamic analysis model considering interactions of main structure and electrical equipment of the substations is established.The nonlinear time-history dynamic method with a series of near-fault ground motion waves is used in seismic response analysis of large substations,and the results are comparative analyzed with the results of seismic response under far-fault ground motions.It is shown that the reactions of substation buildings under near-fault ground motions are stronger than those in common ground motions and the destruction of the former is more serious than the latter.Meanwhile,the seismic reactions of substations with isolation technology under near-fault ground motions are investigated to compare with those in normal substations.It can be learned that the seismic reactions of isolation substations under near-fault ground motions are better than those substations without isolation technology,which is feasible for the substations built in the regions of near-fault ground.
Combining with the characteristics of near-fault ground motions,and according to the specific conditions in China,a three dimensions dynamic analysis model considering interactions of main structure and electrical equipment of the substations is established.The nonlinear time-history dynamic method with a series of near-fault ground motion waves is used in seismic response analysis of large substations,and the results are comparative analyzed with the results of seismic response under far-fault ground motions.It is shown that the reactions of substation buildings under near-fault ground motions are stronger than those in common ground motions and the destruction of the former is more serious than the latter.Meanwhile,the seismic reactions of substations with isolation technology under near-fault ground motions are investigated to compare with those in normal substations.It can be learned that the seismic reactions of isolation substations under near-fault ground motions are better than those substations without isolation technology,which is feasible for the substations built in the regions of near-fault ground.
引文
[1]城市与工程减灾基础研究论文集编辑委员会.城市与工程减灾基础研究论文集[M].北京:中国科学技术出版社,1995.
[2]Wang G Q,Zhou X Y,Zhang P Z,et al.Caracteristics of ampli-tude and duration for near fault strong ground motion from the 1999Chi-Chi,Taiwan,earthquake[J].Soil Dynamics and EarthquakeEngineering,2002,22:73-96.
[3]文波,牛荻涛,韩永兴,等.陕西省供电系统在5.12汶川大地震中破坏及震害评估[J].建筑结构,2008,38(10):54-56.
[4]Malhotra P K.Response of buildings to near-field pulse-likeground motions[J].Earthquake Engineering and Structural Dy-namics,1999,28:1309-1326.
[5]Hall J F,Heaton T H,Halling MW,et al.Near-source groundmotion and its effects on flexible buildings[J].Earthquake Spec-tra,1995,11(4):569-605.
[6]刘启方,袁一凡,金星,等.近断层地震动的基本特征[J].地震工程与工程振动,2006,26(1):1-10.
[7]杨迪雄,李刚.近断层地震动的强度度量参数研究[J].地震工程与工程振动,2008,28(4):31-36.
[8]文波.配电楼-电气设备系统的地震反应及减震控制研究[D].西安:西安建筑科技大学,2008.
[9]国家电网工程输变电工程典型设计[M].北京:中国电力出版社,2005.
[10]北京金土木软件技术有限公司,中国建筑标准设计研究院.SAP2000中文版使用指南[M].北京:人民交通出版社,2006.
[2]Wang G Q,Zhou X Y,Zhang P Z,et al.Caracteristics of ampli-tude and duration for near fault strong ground motion from the 1999Chi-Chi,Taiwan,earthquake[J].Soil Dynamics and EarthquakeEngineering,2002,22:73-96.
[3]文波,牛荻涛,韩永兴,等.陕西省供电系统在5.12汶川大地震中破坏及震害评估[J].建筑结构,2008,38(10):54-56.
[4]Malhotra P K.Response of buildings to near-field pulse-likeground motions[J].Earthquake Engineering and Structural Dy-namics,1999,28:1309-1326.
[5]Hall J F,Heaton T H,Halling MW,et al.Near-source groundmotion and its effects on flexible buildings[J].Earthquake Spec-tra,1995,11(4):569-605.
[6]刘启方,袁一凡,金星,等.近断层地震动的基本特征[J].地震工程与工程振动,2006,26(1):1-10.
[7]杨迪雄,李刚.近断层地震动的强度度量参数研究[J].地震工程与工程振动,2008,28(4):31-36.
[8]文波.配电楼-电气设备系统的地震反应及减震控制研究[D].西安:西安建筑科技大学,2008.
[9]国家电网工程输变电工程典型设计[M].北京:中国电力出版社,2005.
[10]北京金土木软件技术有限公司,中国建筑标准设计研究院.SAP2000中文版使用指南[M].北京:人民交通出版社,2006.
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