基于新型隔震支座的支柱类电气设备振动台试验研究  

Shaking table test study of post-electrical equipment based on a new type of seismic isolation bearing

作　　者：杨玟 李彬彬[1,2] 苏三庆[1] 王威[1] 张拓 于新亮 李怀伟 YANG Wen;LI Binbin;SU Sanqing;WANG Wei;ZHANG Tuo;YU Xinliang;LI Huaiwei(School of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;Key Laboratory of Structural Engineering and Earthquake Resistance,Ministry of Education,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]西安建筑科技大学结构工程与抗震教育部重点实验室,陕西西安710055

出　　处：《地震工程与工程振动》2025年第2期203-212,共10页Earthquake Engineering and Engineering Dynamics

基　　金：陕西省创新能力支撑计划项目(2020PT-038);陕西省重点研发计划项目(2022SF-375);国家自然科学基金项目(52278214,52378314);陕西省自然科学基础研究计划重点项目(2022JZ-21)。

摘　　要：变电站是连接输送与分配电力的核心环节,支柱类电气设备在变电站中占据重要地位,其数量众多,种类繁杂,在地震中极易受损。文中以500 kV电压互感器为研究对象,加装新型钢丝绳隔震支座,通过地震模拟振动台试验,对比分析原型结构与隔震结构在地震作用下的响应特征。研究结果表明,与原型结构相比,隔震结构的基频明显降低,证实了新型钢丝绳隔震支座在减小支柱类电气设备地震响应方面的有效性。同时,隔震结构在降低加速度和应力响应方面表现出较高的隔震率,但对于位移响应的隔震效果相对有限。在强震作用下,隔震结构能够有效降低设备的加速度和应力响应,从而降低了设备瓷质绝缘子因震动而断裂的风险。但隔震支座并未明显降低设备顶端位移响应。因此,后续改进新型钢丝绳隔震支座时,需综合考虑地震引起的各种响应,以确保设备的整体安全。The substation is the core link in the transmission and distribution of electricity.Post-electrical equipment holds an important position in substations.They are not only numerous but also diverse,and are very likely to be damage in earthquakes.This paper takes the 500 kV voltage transformer as the research object,installs a new type of steel wire rope seismic isolation bearing on it,and compares and analyzes the response characteristics of the prototype structure and the seismic isolation structure under seismic action through the seismic simulation shaker test.The test results show that the fundamental frequency of the isolation structure has been significantly reduced compared with the prototype structure,confirming the effectiveness of the new wire rope seismic isolation support in reducing the seismic response of post-electrical equipment.Meanwhile,the seismic isolation structure shows high isolation efficiency in reducing acceleration and stress response,but the isolation effect for displacement response is relatively limited.Under strong seismic effects,the seismic isolation structure can effectively reduce the acceleration and stress response of the equipment,which reduces the risk of breakage of porcelain insulators of transformers due to vibration.At the same time,the seismic isolation bearings will not have significantly reduced the top displacement response of the equipment.Therefore,in the subsequent improvement of the new wire rope seismic isolation support,it is necessary to comprehensively consider the various responses caused by seismic forces to ensure the overall safety of the equipment.

关 键 词：电气设备 电压互感器 抗震性能 隔震支座 振动台试验 

分 类 号：TU318.1[建筑科学—结构工程]