| 架空输电线的找形及舞动分析 |
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| 引用本文： | 曹化锦,李黎,陈元坤,夏正春.架空输电线的找形及舞动分析[J].华中科技大学学报(自然科学版),2011(1):102-105. |
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| 作者姓名： | 曹化锦 李黎 陈元坤 夏正春 |
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| 作者单位： | 华中科技大学土木工程与力学学院;华中科技大学控制结构湖北省重点实验室;中铁第四勘察设计院集团有限公司; |
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| 基金项目： | 国家电网公司科技项目(SGKJ[2007]413); 国家自然科学基金资助项目(50878093) |
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| 摘 要： | 提出一种高效率的多跨度架空输电线覆冰舞动的简化有限元分析方法.基于有限元程序ANSYS/LS-DYNA,建立用弹簧代替塔对输电线作用的弹簧-输电线模型,给出了考虑初始架线构型和覆冰荷载的混合找形法,利用CFX数值风洞技术对覆冰导线各攻角下气动特性进行CFD数值模拟得出升力系数曲线,进行了多跨度架空输电线的简化舞动分析和有效性验证.基于本方法对1 000kV汉江大跨越架空导线的覆冰舞动进行了仿真计算,得出风速和初始凝冰角控制舞动发生的结论.
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| 关 键 词： | 输电线 找形 覆冰 舞动 简化分析 气动特性 |
Form finding and galloping analysis of overhead transmission conductors |
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| Cao Huajina,b Li Lia,b Chen Yuankuna,b Xia Zhengchun.Form finding and galloping analysis of overhead transmission conductors[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2011(1):102-105. |
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| Authors: | Cao Huajina b Li Lia b Chen Yuankuna b Xia Zhengchun |
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| Institution: | Cao Huajin1a,b Li Li1a,b Chen Yuankun1a,b Xia Zhengchun2(1 a School of Civil Engineering and Mechanics,b Hubei Key Laboratory of Control Structure,Huazhong University of Science and Technology,Wuhan 430074,China,2 China Railway Siyuan Survey and Design Group Co.Ltd.,Wuhan 430063,China) |
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| Abstract: | A simplified high efficient finite element analysis method was presented to analyze the icing galloping of multi-span and overhead transmission conductors.Based on ANSYS/LS-DYNA,a springs-transmission conductors model was established that spring was used to copy the actions of tower to transmission conductors.Mixed form-finding method was presented and the method take the initial form of fixing wires and icing load into count,numerical wind tunnel technology based on CFD numerical simulation was used to stu... |
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| Keywords: | transmission conductor form finding ice-coated galloping simplified analysis aerodynamic characteristics |
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