何畅;谢强;杨振宇;

• 1:同济大学土木工程学院

摘要(Abstract)：

气体绝缘开关(gas insulated switchgear,GIS)套管是特高压(ultra-high voltage,UHV)变电站中的重要设备。为提高某型1100 kV特高压GIS套管-支架体系的抗震性能,对该套管原有钢支架梁柱节点进行了加固,并增加了相应斜撑,对加固前后的套管-支架体系进行了振动台试验。结果表明:加固前原支架在不同地震作用下动力特性发生变化,抗震性能不满足相关规范要求。支架对套管地震响应有较大的放大作用,加固后的支架侧向刚度增强,支架顶部加速度反应谱峰值较加固前降低,且主要频率分量升高,与套管基频差异增加,套管-支架体系地震响应较加固前减小。支架对体系抗震性能有较大影响,加固后的支架能显著提高GIS套管-支架体系的抗震性能。

关键词(KeyWords)： 特高压气体绝缘开关;套管支架;地震响应;振动台试验;抗震加固

Abstract:

Keywords:

基金项目(Foundation): 国家电网公司科技项目(SGTYHR/14-JS-188);; 教育部霍英东教育基金会优选资助课题(114021)~~

作者(Author): 何畅;谢强;杨振宇;

Email:

DOI: 10.13335/j.1000-3673.pst.2017.2227

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