| 输电塔线体系断线动力响应及杆塔破坏模拟研究 |
| |
| 引用本文： | 胡位勇,严波,程皓月,郭跃明.输电塔线体系断线动力响应及杆塔破坏模拟研究[J].应用力学学报,2012,29(4):431-436,487. |
| |
| 作者姓名： | 胡位勇 严波 程皓月 郭跃明 |
| |
| 作者单位： | 1. 重庆大学资源及环境科学学院工程力学系,重庆,400030
2. 中国电力工程顾问集团西南电力设计院,成都,610021 |
| |
| 基金项目： | 重庆市自然科学基金项目，中央高校基本科研业务费资助 |
| |
| 摘 要： | 利用ABAQUS软件建立500kV典型输电线路段塔线耦合体系的精细有限元模型,数值模拟覆冰塔线耦合体系断线后的动态响应和杆塔破坏过程。对杆塔引入等效塑性应变破坏准则,当单元的最大等效塑性应变达到许用值时,删除单元以模拟杆塔的破坏。数值模拟结果与按我国电力设计规程以及IEC设计规程的计算结果比较表明:地线断线时用塔线模型和规程计算得到的杆塔应力的差别较导线断线时大,地线和导线断线时杆塔的最大应力均大于两种规程的计算值;杆塔上与地线连接的角担是断线时的薄弱区域。现行电力设计规程中采用静力分析方法对断线产生的冲击动力作用的估计不足。
|
| 关 键 词： | 输电塔线耦合体系 断线 破坏 有限元模拟 |
Numerical investigation on dynamic response and failure of transmission line and tower after wire breaking |
| |
| Hu Weiyong,Yan Bo,Cheng Haoyue,Guo Yueming.Numerical investigation on dynamic response and failure of transmission line and tower after wire breaking[J].Chinese Journal of Applied Mechanics,2012,29(4):431-436,487. |
| |
| Authors: | Hu Weiyong Yan Bo Cheng Haoyue Guo Yueming |
| |
| Affiliation: | 2(Department of Engineering Mechanics,Chongqing University,400030,Chongqing,China) 1(Southwest Electric Power Design Institute of Electric Power Project Consultant Group of China,610021,Chengdu,China) 2 |
| |
| Abstract: | The tower-line finite element model of a typical 500kV transmission line section is set up by means of ABAQUS software,and the dynamic response of the tower-line system and tower failure in the case of wire breaking are numerically simulated.The failure criterion of equivalent plastic strain is introduced to simulate the failure of the tower,and the element is deleted as its equivalent plastic strain exceeds the allowable level.The result of numerical simulation shows that the maximum stress of the tower in the case of wire breaking is larger than those determined by the design codes of transmission line,so the dynamic impact may be underestimated in the current codes. |
| |
| Keywords: | tower-line system broken wire failure finite element simulation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
