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| Failure modes analysis of a broken down transmission tower under ice loads |
| Received:August 16, 2009 Revised:January 10, 2010 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201103027 |
| KeyWord:failure modes transmission tower ice load limit load tower collapses |
| Author | Institution |
| 熊铁华 |
武汉大学 土木建筑工程学院,武汉 |
| 梁枢果 |
武汉大学 土木建筑工程学院,武汉 |
| 吴海洋 |
中南电力设计院,武汉 |
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| Abstract: |
| A method controlled by ice thickness was introduced to generate dominant failure modes of a transmission tower. In two conditions, dominant failure modes of a broken down transmission tower in southern China were gotten. The examples showed that th is kind of tower had three weakparts: points of hanging lines, upside braces and upside tower body, and the limit ice thickness of points of hanging lines And upside braces were very close to the designed ice thickness of the tower if 20% unbalance tension existed. The numerical results of failure modes analysis were consistent with the conclusion given by the accident investigation report. |