| 覆冰荷载下500 kV输电塔失效模式研究 |
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| 引用本文： | 刘春城,胡晓炜,乔亮,曹玲,张伟民. 覆冰荷载下500 kV输电塔失效模式研究[J]. 水电能源科学, 2013, 31(11): 197-200 |
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| 作者姓名： | 刘春城 胡晓炜 乔亮 曹玲 张伟民 |
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| 作者单位： | 东北电力大学 建筑工程学院, 吉林 吉林 132012;东北电力大学 建筑工程学院, 吉林 吉林 132012;河南省电力公司 洛阳供电公司， 河南 洛阳 471000;东北电力大学 建筑工程学院, 吉林 吉林 132012;云南电网公司 电力教育中心， 云南 昆明 650204 |
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| 基金项目： | 国家自然科学基金资助项目(50978049);中国电机工程学会电力青年科技创新基金资助项目（200836）;吉林市杰出青年基金资助项目(200804) |
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| 摘 要： | 以2008年初南方雪灾致输电塔倒塌为背景，利用ANSYS软件建立了某500 kV输电线路的一塔两线体系精细化有限元模型，给出了利用荷载增量最小准则法搜寻输电塔主要失效模式的过程，计算了中、重冰区高压输电塔的主要失效模式，列出各失效路径中失效杆件的位置，进而对比分析了中、重冰区下输电塔结构的可靠性。结果表明，中冰区的输电塔的失效模式大部分在塔头位置，不能满足标准要求，而重冰区的主要失效模式出现在塔头部分的偏多，部分出现于塔身位置，相比于塔头，塔身部分的能满足标准要求。
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| 关 键 词： | 输电塔； 覆冰； 失效模式； ANSYS |
Failure Mode Analysis for 500 kV Transmission Tower under Icing Load |
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| LIU Chuncheng,HU Xiaowei,QIAO Liang,CAO Ling and ZHANG Weimin. Failure Mode Analysis for 500 kV Transmission Tower under Icing Load[J]. International Journal Hydroelectric Energy, 2013, 31(11): 197-200 |
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| Authors: | LIU Chuncheng HU Xiaowei QIAO Liang CAO Ling ZHANG Weimin |
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| Affiliation: | School of Architecture Engineering, Northeast Dianli University, Jilin 132012, China;School of Architecture Engineering, Northeast Dianli University, Jilin 132012, China;Luoyang Power Supply Company, Henan Electric Power Corporation, Luoyang 471000, China;School of Architecture Engineering, Northeast Dianli University, Jilin 132012, China;Electricity Education Center of Yunnan Power Grid Corporation, Kunming 650204, China |
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| Abstract: | In the background of collapse of transmission tower caused by the snowstorms on early 2008, finite element model of 500 kV transmission tower-line system is established by using ANSYS. According to the minimum incremental loading criterion, the failure mode of the transmission tower is obtained. Under medium and heavy icing area, it calculates the failure probability of these failure modes and lists the location of each failure path. The reliability of transmission tower structure is analyzed. The results show that under medium icing area, most elements of failure modes are located in tower head, which can not meet the requirements of criterion; under heavy icing area, failure modes still are main located in tower head, but others are located in tower body, which can meet the requirements of criterion. |
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| Keywords: | transmission tower icing failure mode ANSYS |
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