结构工程师2024，Vol.40Issue(2)：61-68,8.
±800kV特高压输电塔动力特性分析
Analysis of Dynamic Characteristics of±800 kV UHV Transmission Tower
董新胜 1任顺恩 2冯浩琪3
作者信息
- 1. 国网新疆电力公司电力科学研究院,乌鲁木齐 830011
- 2. 郑州大学土木工程学院,郑州 450001
- 3. 中国联合工程有限公司,杭州 310022
- 折叠
摘要
Abstract
In the study of the structural design and dynamic characteristics of transmission tower structures,the accurate determination of the tower's dynamic response through theoretical analysis and numerical simulation poses a significant challenge.This paper focuses on the±800 kV Ultra-High Voltage Direct Current(UHVDC)transmission line towers and establishes a finite element model of the tower-line-foundation system.The p-y curve method is employed to represent the discrete nonlinear springs simulating soil-structure interaction.Different computational models,including single-tower,three-tower two-line,and the tower-line-foundation system,are compared and analyzed concerning the dynamic characteristics of UHV transmission towers.The study investigates the effects of the mass and stiffness of the transmission line on the tower's dynamic behavior,emphasizing the importance of considering tower-line coupling.The inclusion of pile-soil interaction results in a reduction in the natural frequency of the transmission tower.The tower-line-foundation system model yields frequencies that are relatively smaller compared to the single-tower model,and they are closer to the frequencies observed in field tests,validating the rationality of the tower-line-foundation system model.关键词
输电塔/塔-线-基础体系/动力特性/p-y曲线/计算模型Key words
transmission tower/tower-line-foundation system/dynamic characteristics/p-y curve/calculation model引用本文复制引用
董新胜,任顺恩,冯浩琪..±800kV特高压输电塔动力特性分析[J].结构工程师,2024,40(2):61-68,8.
