变压器及套管隔震体系振动台试验及地震响应分析

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (21) : 22-29.

论文

变压器及套管隔震体系振动台试验及地震响应分析

曹枚根1，周福霖2，谭平2

作者信息 +

Shaking Table Test and Theoretic Analysis on Seismic Performance of Transformer Isolation System with bushings

CAO Mei-gen1，ZHOU Fu-lin2，TAN Ping2

Author information +

文章历史 +

摘要

国内外震害分析表明，变压器及套管的抗震能力薄弱，地震中破坏型式多样。提高变压器及套管抗震能力的关键是降低加速度响应。隔震技术具有隔震机理明确、减震效果明显的特点，得到了广泛地应用。首先，提出了变压器适用的隔震层设计方案。通过组合隔震支座的研制与力学性能试验研究，得到了相关力学性能参数，所研制的隔震支座具有力学性能稳定、滞回耗能能力强等特点。其次，设计了一台真型变压器及套管试验模型，开展了不同地震输入下，变压器隔震前后的振动台抗震试验，分析了变压器及套管的动力特性及地震响应。试验分析表明，隔震后变压器的自振频率有较大降低，除Taft输入下隔震效果不理想外，其它地震输入时变压器加速度等地震响应均有较明显的降低。最后，采用ANSYS建立试验变压器的数值模型，开展了两种隔震方案的变压器地震响应数值分析，分析与试验结论基本一致。上述研究对今后开展变压器隔震设计与应用具有重要的参考意义。

Abstract

Earthquake damage analysis at home and abroad is showed that seismic capacity of transformer & bushing is weak and the destruction types is diversity when earthquake happened. It is the key to reduce the acceleration response which improving seismic ability of transformer and bushing. Seismic isolation technology has been used widely because of characteristics which is isolation mechanism clear, isolation effect obvious. Firstly, Isolation layer design scheme suited to transformer and bushing are put forward. Through the combined isolation bearings developed and experimental studied, the mechanical performance parameters for bearings are obtained which mechanical properties is stable and hysteretic energy dissipation is strong. Secondly, one true type testing transformer model with bushings is designed. Shaking table test on transformer with or without isolation are carried out under the different earthquake inputs. Dynamic characteristics and seismic response of transformer and bushings are analyzed. Test results show that the natural frequency of transformer with isolation is much lower and acceleration seismic response is greatly reduced subjected to various seismic wave besides of Taft inputting. In addition, using ANSYS to establish the testing transformer model, numerical analysis of seismic response for transformer with two kinds of isolation schemes are carried out. Analysis and experimental results are basically the same. In conclusion, mentioned above research have reference role to seismic isolation design and application for power transformer with bushings for the future.

导出引用

曹枚根;周福霖;谭平. 变压器及套管隔震体系振动台试验及地震响应分析[J]. 振动与冲击, 2012, 31(21): 22-29

CAO Mei-gen;ZHOU Fu-lin;TAN Ping. Shaking Table Test and Theoretic Analysis on Seismic Performance of Transformer Isolation System with bushings[J]. Journal of Vibration and Shock, 2012, 31(21): 22-29