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安利强,冯亮,张志尧,等. 变高差特高压直流输电塔线体系的地震响应分析[J]. 科学技术与工程, 2020, 20(10): 3990-3996.
AN Liqiang,FENG Liang,ZHANG Zhiyao,et al.Study on seismic response of UHVDC transmission tower-line system considering elevation difference[J].Science Technology and Engineering,2020,20(10):3990-3996.
变高差特高压直流输电塔线体系的地震响应分析
Study on seismic response of UHVDC transmission tower-line system considering elevation difference
投稿时间:2019-07-17  修订日期:2019-09-19
DOI:
中文关键词:  高差  特高压直流输电线路  多维激励  行波效应
英文关键词:topographic variation  UHVDC transmission lines  Multi-component seismic excitation  the effects of wave passage
基金项目:
                 
作者单位
安利强 华北电力大学 机械工程系
冯亮 华北电力大学 机械工程系
张志尧 华北电力大学 机械工程系
黄增浩 南方电网科学研究院
龚博 南方电网科学研究院
张志强 南方电网科学研究院
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中文摘要:
      为探究高差对特高压直流输电线路的地震响应影响,分别建立了高差为40m、-40m和无高差的三种塔线体系模型,采用有限元软件进行地震动模拟,对比分析了不同塔线体系模型的响应特征。研究结果表明,地震动多维激励或考虑行波效应作用时,有高差变化的输电塔地震响应较无高差变化的输电塔,其主材单元的轴力最值分别增加7.62%和6.79%左右,其节点顺线路方向位移随时间的变化规律有所改变。因此对于途径山地丘陵的特高压直流输电线路,考虑高差的影响有助于获得更贴近实际的地震响应结果。
英文摘要:
      In order to explore the influence of elevation difference on the seismic response of UHVDC transmission lines, three models of transmission tower-line systems with elevation difference 40m,-40m and without elevation difference are established respectively. The seismic wave simulation analysis was carried out by finite element software and the responses of these tower-line systems were compared. The results show that when the multi-dimensional excitation of ground motion or the effect of traveling wave is considered, The maximum axial force of the main material element increases by 7.62% and 6.79% respectively in the transmission tower with elevation difference variation compared with the transmission tower without elevation difference variation, and the variation of the node displacement along the line with time has changed. Therefore, the UHVDC transmission lines are located in Hilly region should be considered the topographic variation, which is helpful to obtain the results of realistic seismic response.
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