输电线路抢修塔中拉线初始倾角的研究

Study of Cable Initial Inclination in Repaired Tower of Transmission Line

为研究输电线路抢修塔拉线对地倾角变化对抢修塔结构力学性能的影响,以220kV输电线路抢修塔为例,采用ANSYS分析软件构建了抢修塔结构非线性有限元模型,依据规范分析了抢修塔最不利大风工况,并选取7种拉线对地倾角。计算比较结果表明,综合考虑5种力学性能指标,可获得拉线最佳对地倾角,满足抢修需要。

In order to investigate the influence of initial angle of dip on mechanical properties of the repaired tower structure,software ANSYS is used to establish nonlinear finite element model of repaired tower by taking the 220 kV transmission line repaired tower as example.According to the specification,the most unfavorable gale condition of the repaired tower is analyzed.Seven kinds of initial angle of the guy are selected.Compared with the calculated results,it is shown that five kinds of mechanical property index are considered comprehensively and the optimum initial angle of guy is obtained,which meets the need of repaired work.