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地震作用下输电塔线耦联体系导线减震作用研究

DOI: 10.13197/j.eeev.2015.05.47.lig.008, PP. 47-53

Keywords: 耦联体系,振动台试验,减震效能,质量效应,非线性振动效应

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Abstract:

为了研究输电线在地震动过程中质量效应和非线性振动效应对塔体减震的作用,以皖电东送淮南-上海输变电工程为背景,设计了单塔模型、单塔悬挂等效集中质量块模型和塔线体系模型三种缩尺试验模型并进行了振动台试验。通过分析试验结果我们认为考虑导线的质量效应后,塔体在地震动作用下的结构动力响应有所降低,并且输电线质量效应对于垂直线路方向的减震效能明显优于顺线路方向;考虑输电线的非线性振动效应之后,塔体在地震动作用下的结构动力响应在质量效应减震的基础上有了进一步的减小,并且地震动幅值越大,输电线非线性振动效应导致的塔体减震效果也愈明显。

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