电力勘测设计Issue(7)：19-22,4.DOI:10.13500/j.dlkcsj.issn1671-9913.2024.07.004
矩形钢管在输电铁塔中的应用研究
Study on the Application of Rectangular Steel Tubes in Transmission Towers
张永飞 1潘锦旭 1蔡钦1
作者信息
- 1. 中国电力工程顾问集团华东电力设计院有限公司,上海 200001
- 折叠
摘要
Abstract
In recent years,circular steel tube members have been widely used in UHV transmission towers or large-span towers because of their fully symmetrical and small shape coefficient.However,the circular section is easy to cause vortex induced vibration in the breeze,which occurs from time to time in the lines that have been put into operation,and some lines have also caused the damage of members.The small Strouhal number of rectangular members can effectively improve the aerodynamic performance of members and increase the critical wind speed of vibration.In this paper,the width thickness ratio,critical wind speed of vibration and galloping wind speed of rectangular members are calculated and analyzed.The results show that rectangular members can greatly increase the critical wind speed of vibration without increasing the weight;it can be applied in auxiliary components or diaphragm of the structure.关键词
输电铁塔/矩形钢管/涡激振动/驰振/宽厚比Key words
transmission tower/rectangular steel tube/vortex-induced vibration/galloping vibration/width-to-thickness ratio分类
动力与电气工程引用本文复制引用
张永飞,潘锦旭,蔡钦..矩形钢管在输电铁塔中的应用研究[J].电力勘测设计,2024,(7):19-22,4.
