| 多维地震激励下特高压直流输电塔的响应分析 |
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| 引用本文： | 黄增浩,龚博,张志强,张志尧,冯亮,安利强.多维地震激励下特高压直流输电塔的响应分析[J].科学技术与工程,2019,19(23):120-125. |
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| 作者姓名： | 黄增浩 龚博 张志强 张志尧 冯亮 安利强 |
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| 作者单位： | 南方电网科学研究院,广州,510663;华北电力大学机械工程系,保定,071000 |
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| 基金项目： | 中国南方电网有限责任公司科技项目(0002200000037332) |
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| 摘 要： | 强震作用会对输电塔造成巨大的破坏,其中特高压直流输电塔因其高度高、柔度大,对地震载荷作用更敏感。建立了三基±800 k V特高压直流输电塔模型,采用有限元软件进行多维地震动模拟,对比分析了不同呼称高度的特高压直流直线塔、耐张塔的多维地震动特征。研究结果表明:呼高较高的输电塔在多维地震激励下的响应明显大于呼高低的输电塔;同时,耐张塔的响应比直线塔的响应小。因此为提高输电线路的抗震能力,应适当降低输电塔的呼称高度,并且增加耐张塔的数目。
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| 关 键 词： | 特高压直流输电塔 多维地震波 呼称高度 抗震能力 |
| 收稿时间： | 2018/12/26 0:00:00 |
| 修稿时间： | 2019/4/23 0:00:00 |
Seismic Response Analysis of UHVDC Power Transmission Towerunder Multi-component Ground Motion Excitation |
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| HUANG zenghao,GONG bo,ZHANG zhiqiang,ZHANG zhiyao,FENG liang and.Seismic Response Analysis of UHVDC Power Transmission Towerunder Multi-component Ground Motion Excitation[J].Science Technology and Engineering,2019,19(23):120-125. |
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| Authors: | HUANG zenghao GONG bo ZHANG zhiqiang ZHANG zhiyao FENG liang and |
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| Institution: | Electric Power Research Institute,CSG,Electric Power Research Institute,CSG,Electric Power Research Institute,CSG,Department of Mechanical Engineering,North China Electric Power University,Department of Mechanical Engineering,North China Electric Power University, |
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| Abstract: | A huge damage will be caused by violent earthquake on transmission tower, especially in ultra-high voltage direct current transmission, for its high altitude and flexibility. Considering of comparing the seismic response of straight-line tower in different nominal height, and the differences between straight-line tower and multi-circuitSstrainStower. Three finite element models of the ±800kV transmission tower were established and the multi-component seismic wave simulation analysis was carried out by finite element software. The results show that the responses on high nominal height are significantly larger than those on low nominal height. Meanwhile, the responses on straight-line tower are larger than those on multi-circuitSstrainStower. Thus, in order to improve the seismic capacity of transmission line, the nominal height of transmission tower should be reduced and the number of multi-circuitSstrainStower should be increased. |
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| Keywords: | UHVDC power transmission tower the multi-component seismic wave nominal height seismic capacity |
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