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

WANG Zhiyuan; HU Zujun; LI Sheng; LI Suchao; LIU Zhenliang

doi:10.13204/j.gyjzG21052420

Volume 51 Issue 11

Mar. 2022

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WANG Zhiyuan, HU Zujun, LI Sheng, LI Suchao, LIU Zhenliang. SHAKING TABLE TESTS OF VERTICAL ISOLATION FOR TRANSFORMER MODELS BASED ON METALLIC RUBBER CUSHION AND SPRINGS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(11): 7-12. doi: 10.13204/j.gyjzG21052420

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

doi: 10.13204/j.gyjzG21052420

1. Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, School of Civil Engineering, Harbin Institute of Technology,Harbin 150090, China;
2. Department of Civil Engineering, Harbin Institute of Technology at Weihai,Weihai 264209, China;
3. China Electric Power Research Institute, Beijing 100055, China;
4. Institute of Architectural Engineering, Yancheng Kindergarten Teachers College, Yancheng 224005, China

Received Date: 2021-05-24
Available Online: 2022-03-29

Abstract

Abstract

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.
- metallic rubber,
- main transformer equipment,
- vertical isolation,
- shaking table test

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References(12)

References

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