输电塔线体系脱冰跳跃动力响应分析

针对输电塔线体系脱冰跳跃动力响应的问题,基于ANSYS软件建立了输电塔线体系模型,利用集中荷载的方法对覆冰进行模拟,分析了塔线体系下考虑覆冰厚度、脱冰率等不同工况下脱冰跳跃的动力响应,确定了覆冰厚度、脱冰率对导线竖向位移、最大水平张力及到达时间的影响。结果表明,随覆冰厚度增加导线竖向最大位移、最大水平张力增加,但增长率不同;脱冰率增加对导线竖向位移影响不大,但对最大水平张力有一定影响,且到达时间延长。

Dynamic Response Analysis of Icing Jumping for Transmission Tower-line System

Aiming at the problem of dynamic response analysis of icing jumping for transmission tower-line system, the model of tower-line system is established by using ANSYS software. And concentrated load method is used to simulate icing. Considering the different situation as icing thickness and ice-shedding rate, we could complete the dynamic analysis so as to determine the influence of ice thickness and ice-shedding rate on vertical displacement of the wire, the maximum horizontal tension and arrival time. The results show that with the increase of icing thickness, the maximum vertical displacement of wire and the maximum horizontal tension increases but the growth rate is different; increase of ice-shedding rate has a little effect of the vertical displacement of the wire, but it has a certain influence of the maximum horizontal tension and the arrival time increases.