500kV配电装置楼隔震结构屋面变电构架地震响应分析  

Seismic Response Analysis of Substation Gantry on 500kV AC Power Distribution Building with Isolation

作　　者：陈寅 郑威 朱东 闫勇 Chen Yin;Zheng Wei;Zhu Dong;Yan Yong(Central Southern China Electric Power Design Institute Co.,Ltd.of China Power Engineering Consulting Group,Wuhan 430071,China)

机构地区：[1]中国电力工程顾问集团中南电力设计院有限公司,武汉430071

出　　处：《特种结构》2023年第3期99-105,共7页Special Structures

基　　金：中电工程科技项目(DG2-T03-2022)。

摘　　要：变电构架是重要的电力设施,为了研究变电构架的抗震性能,以位于8度抗震设防区典型的500kV配电装置楼屋面变电构架为研究对象,采用有限元分析软件,对落地变电构架、屋面变电构架地震响应进行对比分析,并比较了隔震前后屋面变电构架的地震响应。研究结果表明:屋面变电构架地震响应约为落地变电构架的3倍;采用隔震设计后,屋面变电构架底部剪力比最大值为0.13,结构的加速度响应峰值最大可降低86%,隔震效果显著。同时,频谱分析表明,变电构架置于配电装置楼屋面后,地震响应能量大幅增加,振动频率分布范围更广更复杂;隔震后,屋面变电构架加速度响应大幅降低,地震响应能量明显降低。The substation gantry is important power facility.In order to study the seismic performance of gantry,the substation gantry on 500kV power distribution building in the 8 degree seismic fortification zone was taken as the research object.Using the finite element method,the seismic responses of the gantry on land,and the gantry on roof with isolation or non-isolation were analyzed and compared.The results showed that the seismic response values of the gantry on roof was about 3 times of that on land.The isolation effect was remarkable and the maximum bottom shear ratio of the gantry on roof was 0.13,and the peak acceleration response of the structure can be reduced by 86%.At the same time,through spectrum analysis,it was found that the seismic response energy of the substation gantry on the roof of power distribution building was greatly increased,and the vibration frequency distribution was wider and more complex.With isolation,the acceleration response of the gantry on the roof decreased greatly,and the seismic response energy was obviously reduced.

关 键 词：配电装置楼 变电构架 隔震结构 地震响应 频谱分析 

分 类 号：TM63[电气工程—电力系统及自动化] TU311.3[建筑科学—结构工程]