摘要
在高地震烈度地区,高电压等级配电装置楼屋内二层及以上电气设施强度一般难以满足抗震要求,且设施布置复杂荷载大,结构抗震设计不利。文章针对某500kV配电装置楼采取整体基础隔震设计方案,运用有限元分析软件ETABS建立三维空间模型进行非线性时程分析,计算结果表明隔震效果显著,隔震结构水平向减震系数小于0.4,使布置于二层及屋面的电气设施满足抗震要求,上部结构可按设防烈度降低一度进行设计。
In areas with high seismic intensity,the strength of electrical installations on the second floor and above in a high-voltage power distribution building is generally difficult to meet the seismic requirements,and the layout of electrical installations is so complex with large loads that the seismic design of structures is full of disadvantage.In this paper,the spatial finite element model of a 500kV power distribution building designed as a base-isolation building was established by using the program ETABS,to simulate the seismic response with time history analysis,and the analysis results indicated that the seismic response of the isolated structure was effectively reduced with the horizontal seismic decrease coefficient being less than 0.4,as the electrical installations could withstand the seismic load,and the super-structure above isolation layer could be designed with the seismic precautionary intensity reduced by one degree.
作者
江飞
陈寅
JIANG Fei;CHEN Yin(Central Southern China Electric Power Design Institute Co.,Ltd.of CPECC,Wuhan 430071,China)
出处
《电力勘测设计》
2019年第9期14-17,27,共5页
Electric Power Survey & Design
关键词
配电装置楼
基础隔震
时程分析
减震系数
ETABS
power distribution building
base-isolation
time history analysis
seismic decrease coefficient
ETABS
