山地环境中500kV输电塔线体系风振响应研究  

Research on wind vibration response of 500kV transmission towers in complex mountain area

作　　者：刘先珊[1,2] 熊卫红[3] 肖正直[1,2] 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400045 [3]国家电网公司华中分部,湖北武汉430077

出　　处：《武汉大学学报（工学版）》2016年第5期668-673,共6页Engineering Journal of Wuhan University

基　　金：国家山区公路工程技术研究中心资助项目(编号:GSGZJ-2015-09);中央高校基本科研业务费(编号:106112014CDJZR200014;106112014CDJZR200015);国家自然科学基金项目(编号:51478065)

摘　　要：500kV张恩线作为川渝电网与华中主网联络南通道,线路走廊所涉及的地形以高山大岭和山地为主,以此为工程背景,考虑地形对塔线体系风振响应的影响.基于准定常理论,引入地形对风速剖面的修正,计算输电塔的风振响应和风振系数.对比发现,经过地形修正后的位移风振响应均值较修正前有增大,而地形修正前后的位移响应和加速度响应均方根值变化均不明显.因此,针对复杂的山地环境,输电塔线体系的风振响应分析建议考虑地形的修正.The 500 kV transmission line named Zhang＇en as the south access linking the Sichuan-Chongqing power grid and central China power grid, the transmission line corridor is mainly the mountains. Taking the 500 kV transmission line as a case study, the topography affecting the wind vibrating response of the towers should be considered. Based on the quasi-steady theory, the modification of the wind affecting the wind velocity profile was introduced to calculate the wind vibrating response and wind vibration coefficient. The comparison indicated that the modified wind vibrating response increased. However, the mean square root of the displacement and acceleration has not varied very obviously. Therefore, the topography influencing on the wind vibrating response of the transmission towers should be considered.

关 键 词：山地风场 风振系数 输电塔 风振响应 

分 类 号：TM753[电气工程—电力系统及自动化]