塔基移位下架空导线的应力与弧垂研究

Research on Stresses and Sags of Overhead Conductors Due to Displacements of Tower Foundation

架空输电线路在长期运行中,由于地质环境的变化可能导致杆塔基础移位(沉降或偏斜),从而产生安全隐患.本文通过对杆塔基础移位与档距有关参数变化的影响以及二者对导线应力关系的研究,提出了塔基移位下的架空导线应力与弧垂的精确求解方法,并编写了计算机软件.同时对几种基础移位情况进行了计算分析,得到了对线路的安全运行与检修有指导意义的结论.

Overhead transmission lines have been built in the long run, due to geological changes in the envi- ronment that may leads to settlement in tower foundation even oblique, so as to create a security risk. Based on researching the tower foundation shift and span and their related parameter variations and both impacts on overhead lines stresses, a precise method for solving stresses and sags of overhead lines under the tower foun- dation displacement is put forward~ and the preparation of computer software is made. Meanwhile, calculat- ing and analyzing the displacement conditions of several tower foundations, some conclusions are drawn, so as to provide guidance for overhead lines safe operation and maintenance.