摘要
以某500 kV典型输电线路的塔-线体系为模型,借助非线性有限元软件ANSYS/LS-DYNA,在不考虑导线与地面碰撞接触的情况下,模拟不均匀覆冰工况下,四分裂子导线同时断裂、相继断裂两种工况下,断线冲击荷载对输电塔的动力效应。分析结果显示,塔头上的应力和位移动力效应明显,采用拟静力法计算断线冲击荷载是偏于不安全的。
Taking a typical 500 kV transmission tower - line system as an model, using nonlinear finite element software ANSYS / LS - DYNA, without considering the collision impact between the wire and the ground, simulates two breakage conductions of break- ing four sub - conductors at the same time and breaking sequentially under the uneven icing conduction, the dynamic effect of the conductor breakage impact load on the transmission tower is analyzed. The dynamic effects of stress and displacement of the tower head is obvious.
出处
《云南电力技术》
2014年第1期59-62,共4页
Yunnan Electric Power
