摘要
大跨越输电塔线体系是由导线和输电杆塔构成的结构体系。文章根据大跨越塔线体系的动力特性、塔架的振动特点 ,建立了考虑导线、绝缘子和塔架 3种构件组成的塔线耦合体系的非线性计算模型 ,并进行了动力特性分析。研究采用调频质量阻尼器 (TMD)以控制塔架第一振型振动 ,采用多个粘弹性阻尼器 (VED)用于增大塔线体系阻尼 ,减小塔线体系振动。两者联合对大跨越输电塔线体系进行风振控制 ,可使其响应最大值减小 10 %～ 2 0 %。
The transmission tower-line system of the large crossings consist of conductor and tower-pole structures. The paper has established the non-linear calculation model of the tower-line coupling system consisting of three components-conductor, insulator and tower frame and analyzed the dynamic characteristics in according with the dynamic characteristics of the large crossing tower-line system and vibration characteristics of the tower frame. The paper also studied on control of the vibration of the first mode by means of tuned mass damper (TMD) and increase of the system damping and decrease of the system vibration by means of multiple viscoelastic dampers (VED). Combination of the previous two options to control the wind vibration of the tower-line system can reduce the maximum value of its response by 10%～20%.
出处
《电力建设》
北大核心
2002年第8期30-33,37,共5页
Electric Power Construction
关键词
大跨越
振动控制
塔线体系
large crossing
vibration control
tower-line system
