摘要
为了确定当基础发生位移时铁塔杆件内力的变化规律以及不同位移情况下的塔身最危险杆件位置,本文采用有限元的方式计算并分析了输电塔在基础位移作用下的杆件内力变化规律。结果表明基础位移会造成输电塔杆件附加应力的显著增加,当基础发生水平位移时,最危险杆件位置出现在塔腿及横隔面斜材上;当基础发生竖向位移时,最危险杆件位置出现在塔腿主材及斜材上。研究结论对基础位移作用下的输电塔加固方案具有重要的参考意义。
In order to determine the variation law of the internal force of the tower member when the foundation displacement occurs and the position of the most dangerous pole of the tower under different displacement conditions, the paper analyzing the intemal force of transmission tower member under foundation displacement by FEM. And the result shows that foundation displacement can lead to obviously increase of additional stress in transmission tower member. In addition, the most dangerous member appears in diagonal of tower legs or diagonal of diaphragm if foundation shifts along the X axis or Y axis while the most dangerous member appears in tower legs if foundation shifts along the Z axis. Finally this paper makes suggestion to reinforcement of transmission tower under foundation displacement.
作者
徐博
杨景胜
白强
胡超
XYU Bo;YANG Jing-sheng;BAI Qiang;HU Chao(Central Southern China Electric Power Design Institute of China Power Engineering Consulting Group, Wuhan 430071, China)
出处
《电力勘测设计》
2018年第1期54-58,共5页
Electric Power Survey & Design
关键词
基础位移
杆件内力
有限元
加固
foundation displacement
internal force
finite element
reinforcement.
