输电导线对塔线体系风致响应影响研究  

Influence of transmission line on wind-induced response of tower-line system

作　　者：陈伏彬 康文 芦佳敏 蔡虬瑞 翁兰溪 CHEN Fubin;KANG Wen;LU Jiamin;CAI Qiurui;WENG Lanxi(School of Civil and Environmental Engineering,Changsha University of Science&Technology,Changsha 410114,China;Power China Fujian Electric Power Engineering Co.,Ltd.,Fuzhou 350000,China)

机构地区：[1]长沙理工大学土木与环境工程学院,湖南长沙410114 [2]中国电建集团福建省电力勘测设计院有限公司,福建福州350000

出　　处：《长沙理工大学学报(自然科学版)》2025年第1期122-130,共9页Journal of Changsha University of Science & Technology:Natural Science

基　　金：国家自然科学基金项目(52278479、51778072);长沙理工大学专业学位研究生“实践创新与创业能力提升计划”项目(SJCX202021)。

摘　　要：【目的】研究输电导线与塔体耦合作用对塔线体系风致动力响应的影响。【方法】结合某输电线路三塔两线实例,开展数值分析计算及气弹模型风洞试验。基于ABAQUS软件建立了三塔两线体系的有限元模型,将采用谐波合成法生成的风荷载沿顺风向输入,采用Newmark-β法求解体系的顺风向动力响应,计算体系的风振系数,并将之与各规范的风振系数进行对比。【结果】数值分析结果与试验结果吻合良好,且风振系数均高于规范建议值。【结论】输电导线的存在提高了结构气动阻尼,导致塔线体系的加速度响应低于单塔的加速度响应;风振系数随高度增加呈增大趋势,受横担局部质量增加影响,风振系数存在局部突变;在实际工程中计算输电塔风振系数时,输电导线对横担部位的影响不可忽略,研究者应综合考虑多种规范的建议值。[Purposes]The paper aims to study the influence of the coupling between transmission line and tower on the wind-induced dynamic response of the tower-line system.[Methods]Combined with the example of a tower-line system(three towers and two lines),numerical calculation and wind tunnel tests of an aeroelastic model were conducted.A finite element model of the above tower-line system was established with ABAQUS software,and the wind load generated by the harmonic synthesis method was used as input along the downwind direction.The Newmark-β method was used to solve the dynamic response of the system in the downwind direction.The wind-induced vibration coefficient of the system was calculated and compared with various codes.[Findings]The numerical analysis results are in good agreement with the experimental results,and the wind-induced vibration coefficients are all higher than the recommended values in the code.[Conclusions]The existence of transmission lines improves the aerodynamic damping of the structure,resulting in the acceleration response of the tower-line system being lower than that of a single tower.The wind-induced vibration coefficient increases with height,with a local mutation on account of the local mass increase of the cross arm.In practice,when calculating the wind-induced vibration coefficient of the transmission tower structure,the influence of transmission lines on the cross arm should not be ignored,and the suggested values of various codes should be considered comprehensively.

关 键 词：输电塔线体系 有限元分析 风洞试验 风振系数 谐波合成法 

分 类 号：TM75[电气工程—电力系统及自动化] TU352[建筑科学—结构工程]