500 kV拉线门型塔补强加固试验研究

doi:10.11930/j.issn.1004-9649.2014.3.96.4

中国电力 ›› 2014, Vol. 47 ›› Issue (3): 96-100.DOI: 10.11930/j.issn.1004-9649.2014.3.96.4

500 kV拉线门型塔补强加固试验研究

赵强¹, 王德弘^{1, 2}

1. 东北电力大学建筑工程学院,吉林吉林 132012；
2. 哈尔滨工业大学土木工程学院,黑龙江哈尔滨 150090

收稿日期:2013-12-12 出版日期:2014-03-31 发布日期:2015-12-18
作者简介:赵强（1960-）,男,吉林省吉林市人,高级工程师,从事输电工程研究。E-mail: 2008jlzq@163.com

Experiment Study on Reinforcement of 500kV Guyed Transmission Tower

ZHAO Qiang¹, WANG De-hong^{1, 2}

1. School of Architecture Engineering, Northeast Dianli University, Jilin 132012, China;
2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

Received:2013-12-12 Online:2014-03-31 Published:2015-12-18

摘要/Abstract

摘要： 拉线塔是高压输电线路中常见的一种塔形,而在运行维护过程中发现,在许多拉线塔的上部横担中与拉线挂板连接处存在角钢发生较大变形的现象,严重威胁线路安全。针对东长哈送电线路中大量存在的87LM21塔,建立了其有限元模型,并对其进行非线性分析,得到了在静风荷载作用下拉线门型塔的一些力学特性,找到了该塔在实际应用中不能满足使用要求的原因,并初步提出了两种补强加固方案;通过对87LM21拉线门型塔进行静风荷载加载试验,进一步明确了拉线门型塔的力学特性,验证了数值分析结果的正确性,并通过试验测试了补强加固方案的可行性。

关键词: 拉线输电塔, 补强加固, 静风荷载, 试验研究

Abstract: Guyed transmission tower is a common form used to high voltage transmission lines. According to the maintenance and operation record, there are deformation phenomenon appears in tower component of junctions between the upper crossarm and cable, which seriously threatened the safety of transmission line. The non-linear finite element model for the 87LM21towers which are widely used in Dong-Chang-Ha transmission lines is built with ANSYS software. The mechanical properties under three kinds of wind conditions were analyzed and some mechanical properties of guyed transmission tower under calm wind are obtained. The reason why the tower cannot meet the requirements in practice was found, and two reinforcement schemes were proposed, then an experiment of 87LM21 tower under static wind load wascarried out. The mechanical properties of guyed transmission tower were more explicit. At the same time, the rationality of tower model and the result of numerical analysis are verified, and the feasibility of the reinforcement schemes was proved.

Key words: Guyed transmission tower, Reinforcement, Static wind, Experimental study

中图分类号:

TM754

赵强, 王德弘. 500 kV拉线门型塔补强加固试验研究[J]. 中国电力, 2014, 47(3): 96-100.

ZHAO Qiang, WANG De-hong. Experiment Study on Reinforcement of 500kV Guyed Transmission Tower[J]. Electric Power, 2014, 47(3): 96-100.

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500 kV拉线门型塔补强加固试验研究

Experiment Study on Reinforcement of 500kV Guyed Transmission Tower

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500 kV拉线门型塔补强加固试验研究

Experiment Study on Reinforcement of 500kV Guyed Transmission Tower

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