| 输电线路钢管塔构件微风振动分析 |
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| 引用本文： | 吴海洋,包永忠,杨艺. 输电线路钢管塔构件微风振动分析[J]. 电力建设, 2009, 30(9): 42-45 |
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| 作者姓名： | 吴海洋 包永忠 杨艺 |
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| 作者单位： | 中南电力设计院,武汉市,430071;中南电力设计院,武汉市,430071;中南电力设计院,武汉市,430071 |
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| 基金项目： | 中国电力工程顾问集团公司科技项目 |
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| 摘 要： | 基于钢管塔构件微风振动的机理，推导了考虑构件轴向力作用的钢管塔构件微风振动起振临界风速的计算方法，给出了不同杆端约束钢管构件不发生微风振动的最大长细比限值计算公式。 分析发现，对于小管径的钢管构件，仅通过控制长细比抑制其微风振动，势必造成巨大的浪费。 计算表明，当钢管构件的长细比不小于76时，在50年的设计使用寿命期内，构件的微风振动不会导致其发生疲劳破坏。
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| 关 键 词： | 钢管塔 微风振动 长细比 疲劳 |
Analysis of Aeolian Vibration of Transmission Tower Steel Tube Member |
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| WU Hai-yang,BAO Yong-zhong,YANG Yi. Analysis of Aeolian Vibration of Transmission Tower Steel Tube Member[J]. Electric Power Construction, 2009, 30(9): 42-45 |
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| Authors: | WU Hai-yang BAO Yong-zhong YANG Yi |
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| Affiliation: | WU Hai-yang,BAO Yong-zhong,YANG Yi(Central Southern China Electric Power Design Institute,Wuhan 430071,China) |
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| Abstract: | Based on the theory of steel tube transmission tower member aeolian vibration,the method of calculating the critical wind velocity is proposed on the consideration of axial force,and the formula of calculating the maximum slenderness ratio to prevent aeolian vibration of steel tube member with different end constrains.The results of analysis show that to prevent aeolian vibration of steel tube members with small diameters only by controlling slenderness ratio will waste a lot.However,the calculations show t... |
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| Keywords: | steel tube tower aeolian vibration slenderness ratio fatigue failure |
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