1000kV氧化锌避雷器的隔震分析
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摘要
为1 000kV氧化锌避雷器的底部设计了铅芯橡胶支座隔震装置。利用ANSYS有限元软件建立避雷器模型,计算了安装隔震装置前后,在风荷载、接线端子板荷载和水平地震作用下避雷器的内力与位移。安装隔震装置后,避雷器在地震作用下的内力与相对位移有大的降低,整个结构在各种荷载组合下均具备足够的安全储备。
An isolatim system is designed for mitigating earthquake-induced disasters of 1000kV metal oxide arresters,which consists of several lead-rubber base isolators.The finite element models of an arrester,are established with the general finite element analysis software ANSYS,one model is with isolation,but another is without.The internal forces and displacements of the two models are calculated under wind loading,junction board loading and horizontal seismic loading respeclively.In comparison with the model with out isolation,the seismic responses of the model with isolation are reduced distinctly due to the effects of the isolation.The whole structure of the arrester with isolation is enough safe.
An isolatim system is designed for mitigating earthquake-induced disasters of 1000kV metal oxide arresters,which consists of several lead-rubber base isolators.The finite element models of an arrester,are established with the general finite element analysis software ANSYS,one model is with isolation,but another is without.The internal forces and displacements of the two models are calculated under wind loading,junction board loading and horizontal seismic loading respeclively.In comparison with the model with out isolation,the seismic responses of the model with isolation are reduced distinctly due to the effects of the isolation.The whole structure of the arrester with isolation is enough safe.
引文
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[2]Irvine HM,Gaughey TK.The linear theory of free vibrations of a suspended cable[J].Proc.R.Soc.Lond,1974,(A341):299-315.
[3]李宏男,王前信.大跨越输电塔体系的动力特性[J].土木工程学报,1997,30(5):2-4.
[4]李宏男,王前信.输电塔-线耦联体系地震反应分析方法[J].地震工程与工程振动,1996,20(3):2-4.
[5]瞿伟廉,殷惠君,陈波.输电线路动力分析的多质点模型研究[J].华中科技大学学报,2003,20(2):3-4.
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