110kV六回路耐张塔受力性能分析

An Analysis of Mechanical Behaviors of the 110 kV Six-Circuit Tension Tower

采用TTA和ANSYS有限元软件对110 kV六回路耐张塔进行分析,比较两者在大风、覆冰、不平衡张力等多个工况下的力学性能。研究结果表明:风荷载是影响六回路耐张塔体水平位移的主要因素;TTA和ANSYS在分析输电铁塔构件轴力时两者精度较高;考虑几何刚度变化和P-Δ效应后,输电塔塔顶水平位移增量较小;采用TTA程序设计铁塔结构时,对塔身主材等受弯矩影响较大的部位应考虑弯曲应力影响。

In this paper,we analyzed the 110 kV six-cir. cuit tension tower using TTA and ANSYS finite element analysis software and then compared the mechanical behaviors of the structure under conditions of wind load,ice load and unbalance tension between these two methods in the hope to provide useful references for the structure design of the steel tower. The study shows that the wind load is the main factor affecting the horizon. tal displacement of the six-circuit tension tower and both TTA and ANSIS have high precision in analyzing the axial force of transmission tower components. Considering the change of geo. metric stiffness and P-Δ effect,the horizontal displacement in. crement at the top of the transmission tower is small. When the tower structure is designed by TTA,the effect of the bending stress on the main parts of the tower affected seriously by ben. ding moment should be considered.