基于金属橡胶垫和弹簧的变压器竖向隔震振动台试验研究  

SHAKING TABLE TESTS OF VERTICAL ISOLATION FOR TRANSFORMER MODELS BASED ON METALLIC RUBBER CUSHION AND SPRINGS

作　　者：王志远[1,4] 胡祖俊 李圣 李素超 刘振亮[1] WANG Zhiyuan;HU Zujun;LI Sheng;LI Suchao;LIU Zhenliang(Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education,School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China;Department of Civil Engineering,Harbin Institute of Technology at Weihai,Weihai 264209,China;China Electric Power Research Institute,Beijing 100055,China;Institute of Architectural Engineering,Yancheng Kindergarten Teachers College,Yancheng 224005,China)

机构地区：[1]哈尔滨工业大学结构工程灾变与控制教育部重点实验室,哈尔滨150090 [2]哈尔滨工业大学(威海)土木工程系,山东威海264209 [3]中国电力科学研究院有限公司,北京100055 [4]盐城幼儿师范高等专科学校建筑工程学院,江苏盐城224005

出　　处：《工业建筑》2021年第11期7-12,共6页Industrial Construction

基　　金：国家重点研发计划项目(2018YFC0809400);山东省自然科学基金面上项目(ZR2020ME247)。

摘　　要：基于金属橡胶垫和弹簧元件提出一种新型竖向隔震装置。对金属橡胶垫进行变幅值循环压缩试验,研究丝径、名义密度、预压荷载工况下的力学性能和稳定性;对采用新型竖向隔震装置的变压器缩尺模型进行竖向隔震振动台试验,研究隔震体系的动力特性以及单向和双向输入下各测点处的竖向加速度响应。研究表明:金属橡胶垫在预压荷载下的力学性能稳定;基于金属橡胶垫和弹簧的竖向隔震装置可以有效降低结构自振频率并减小地震能量输入,隔震效率随输入地震动幅值的增加而提高。In order to study the influence of wire diameters and nominal densities on the mechanical properties of metallic rubber(MR) cushions in different parameters and preloading conditions, and to verify whether the mechanical properties of metallic rubber cushious stable in preloading conditions, a three-dimensional(3 D) isolation device was proposed based on metallic rubber cushions and springs. Then, vertical isolation shaking table tests were conducted on a scaled isolated transformer model, and the dynamic characteristics of the isolated structure, as well as the vertical acceleration response of the structure under unidirectional or bidirectional input were measured. The results showed that the mechanical properties of metallic rubber under preloading were stable, and the vertical isolation device based on metallic rubber cushions and springs could effectively reduce the natural frequencies of structures and effectively reduce the energy input, and the isolation efficiency increased with the increment of the peak ground acceleration.

关 键 词：金属橡胶垫 主变类设备 竖向隔震 振动台试验 

分 类 号：TU352.12[建筑科学—结构工程]