原型输电线路综合试验基地八分裂导线舞动模拟及防舞分析  

Galloping simulation and anti-galloping analyses of 8-bundle conductors at prototype transmission line comprehensive test site

作　　者：李清 李梦丽 杨晓辉 黄珏 晏致涛[2,3] 赵爽 Li Qing;Li Mengli;Yang Xiaohui;Huang Jue;Yan Zhitao;Zhao Shuang(State Grid Henan Electric Power Research Institute,Zhengzhou 450052,China;School of Civil Engineering,Chongqing University,Chongqing 400044,China;Department of Civil Engineering and Architecture,Chongqing University of Science&Technology,Chongqing 401331,China)

机构地区：[1]国家电网河南省电力公司电力科学研究院,郑州450052 [2]重庆大学土木工程学院,重庆400044 [3]重庆科技学院建筑工程学院,重庆401331

出　　处：《建筑结构》2019年第22期113-116,129,共5页Building Structure

摘　　要：覆冰舞动是输电线路的重要灾害之一,对输电线路舞动机理及防舞措施的研究具有重要意义。采用原型输电线路的几何、物理参数以及D形覆冰八分裂导线的气动力参数,建立了基于结点六自由度且考虑抗弯刚度及轴向与扭转耦合变形的三结点分裂导线模型,研究了加密间隔棒、分散间隔棒和间隔棒铰接对线路舞动的影响。结果表明:模型动力特性与实测值一致,加密间隔棒和间隔棒分散方式1不能有效防舞,间隔棒分散方式2一定程度上会有效提高舞动临界风速,间隔棒铰接连接可以提高舞动临界风速,达到一定防舞作用。Iced galloping is one of the important disasters of transmission line.It is very significant to study the transmission line galloping and perform effective anti-galloping measures.By using the geometric parameters and physical parameters of prototype transmission line and aerodynamic parameters of D-shaped iced 8-bundle conductors at prototype transmission line comprehensive test site,a 3-bundle conductors model based on six degrees of freedom of nodes and considering bending stiffness and coupling deformation of axial and torsion was established.The effects of dense spacer bar,dispersed spacer bar and articulated spacer bar on line galloping were studied.The results show that the dynamic characteristics of the model are consistent with the measured values.The dense spacer bar and dispersion mode 1 of spacer bar can not effectively prevent the galloping.The dispersion mode 2 of spacer bar can effectively improve the critical galloping wind speed to a certain extent.The articulated spacer bar can improve the critical galloping wind speed and achieve a certain anti-galloping effect.

关 键 词：覆冰舞动 八分裂导线 气动力参数 舞动模型 防舞措施 

分 类 号：TU317.2[建筑科学—结构工程] TM751[电气工程—电力系统及自动化]