高压电器2025，Vol.61Issue(4)：101-110,10.DOI:10.13296/j.1001-1609.hva.2025.04.012
输电塔及塔线耦联体系地震响应分析与对比
Seismic Response Analysis and Comparison of Transmission Tower and Tower-line Coupling System
陈艺征 1唐艳 1石碧耀 1吴泽威 1梁云 1鞠登峰1
作者信息
- 1. 中国电力科学研究院有限公司,北京 100089
- 折叠
摘要
Abstract
In recent years,the strong seismic has caused serious threat to the normal operation of power system.Therefore,it is particularly essential to perform seismic analysis and assessment of key structures of the power sys-tem.In this paper,the seismic performance assessment of a transmission tower and the associated tower-line cou-pling system in a 220 kV high-voltage transmission line is performed.Firstly,The finite element model of the tower structure and tower-line coupling system is set up by using Abaqus software to analyze its dynamic performance,stress of the tower leg members,node displacement,and acceleration response.The influence of the conductor cou-pling on the dynamic of the transmission tower is obtained through comparing the dynamic performance and response peak of a single tower and tower-line system.The result shows that the fundamental frequency of the transmission tow-er in the coupled system is about 6%～9%lower than that of the single tower model and the structural fundamental fre-quency is reduced due to the existence of the conductor and ground wire.Due to the effect of the conductor and ground wire,the linear relationship between the peak seismic response of the tower and the peak motion acceleration becomes into a nonlinear relationship.Under the low intensity,the seismic response of the transmission tower in the tower-line coupled system is higher than that of the single tower model and,with the increase of intensity,the seismic response of the tower in the coupled system,compared to the single tower model,tends to gradually decrease.Both the node displacement peak and node absolute acceleration peak of the transmission tower in the tower-line coupled system are lower than those of the single tower model.In the vertical line direction,the nonlinear vibration damping effect of the conductor and ground wire is significantly stronger than its mass amplification effect.关键词
输电塔/地震响应/耦联体系/导线/非线性振动Key words
transmission tower/seismic response/coupling system/conductor wire/non-linear vibration引用本文复制引用
陈艺征,唐艳,石碧耀,吴泽威,梁云,鞠登峰..输电塔及塔线耦联体系地震响应分析与对比[J].高压电器,2025,61(4):101-110,10.
