| 一次输电塔横担破坏事故有限元分析 |
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| 引用本文： | 王振华,金晓华,弓国军.一次输电塔横担破坏事故有限元分析[J].广东输电与变电技术,2010,12(4):48-50. |
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| 作者姓名： | 王振华 金晓华 弓国军 |
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| 作者单位： | 广东省电力设计研究院 |
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| 摘 要： | 介绍某输电塔横担断裂脱落事故,采用有限元方法对横担断裂进行了数值模拟,研究了塔在预设施工孔位吊装和在本次事故挂点吊装下的力学状态。将数值模拟结果与现场试验数据进行了比较,表明有限元方法能较好地模拟横担杆件屈曲失稳现象,施工挂点欠妥是本次事故的主要原因。提出了输电塔在导线起吊时应严格采用预设施工孔的建议。
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| 关 键 词： | 输电塔横担 导线起吊 施工孔 有限元方法 |
Finite Element Analysis of the Cross-arm Breaking Accident on a Transmission Tower |
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| Wang Zhenhua,Jin Xiaohua,Gong Guojun.Finite Element Analysis of the Cross-arm Breaking Accident on a Transmission Tower[J].Guangdong Power Transmission Technology,2010,12(4):48-50. |
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| Authors: | Wang Zhenhua Jin Xiaohua Gong Guojun |
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| Affiliation: | Wang Zhenhua Jin Xiaohua Gong Guojun(Guangdong Electric Power Design Instime ) |
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| Abstract: | The cross arm breaking accident on a transmission tower is introduced and simulation using the Finite Element Method （FEM） is done. The mechanical performance of the tower under two cases of weightlifting, lifting with construction hole and lifting with cross arm brace, is studied. The comparison between simulation and site experimental shows that the FEM is effective to simulate the buckling of the cross arm. Without using construction hole correctly is the main reason for that caused accident. Advice of using construction hole strictly during wire lifting is proposed. |
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| Keywords: | Transmission tower cross ann Wire lifting Construction hole FEM |
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