| 输电铁塔主材低温失效分析 |
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| 引用本文： | 常建伟,李凤辉,徐德录,张东英,于长海,张磊,李光.输电铁塔主材低温失效分析[J].电力建设,2012,33(3):86-88. |
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| 作者姓名： | 常建伟 李凤辉 徐德录 张东英 于长海 张磊 李光 |
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| 作者单位： | 中国电力科学研究院 |
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| 摘 要： | 对输电铁塔主材断裂进行了失效分析，通过承载力计算，化学成分、常温和低温力学性能试验以及对失效塔材断口、金相组织分析，探讨并明确失效原因，提出防范措施。结果表明：塔材为低温脆断，而冲孔形成的微裂纹是导致塔材低温失效的主要原因。
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| 关 键 词： | 输电铁塔 低温 脆性断裂 角钢 |
| 收稿时间： | 2011-05-25 |
Fault Analysis of Transmission Tower Main Material in Low Temperature |
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| CHANG Jianwei
,
LI Fenghui
,
XU Delu
,
ZHANG Dongying
,
YU Changhai
,
ZHANG Lei
,
LI Guang.Fault Analysis of Transmission Tower Main Material in Low Temperature[J].Electric Power Construction,2012,33(3):86-88. |
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| Authors: | CHANG Jianwei LI Fenghui XU Delu ZHANG Dongying YU Changhai ZHANG Lei LI Guang |
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| Affiliation: | (China Electric Power Research Institute, Beijing 100070 ,China) |
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| Abstract: | Fracture of primary materials in transmission tower is analyzed, main conclusions of material failure are drawn and suggestions for improvement is put forward by analyzing bearing capacity, chemical properties, low-temperature tensile properties, fracture part of main material and microstructure of the main fracture material. The results show that main reason for material failure is low-temperature brittle fracture which is mainly caused by cracks in the process of punching. |
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| Keywords: | transmission tower low-temperature brittle fracture angle steel |
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