(1 合肥工业大学土木与水利工程学院， 合肥 230009；2 安徽水利水电职业技术学院建筑工程学院， 合肥 231603)

［摘要］窄基角钢输电塔具有小根开、高柔度的特点，其与输电线组成耦联体系兼具了大跨度的特征，风振效应十分明显。为更好地了解其风振响应特性并简化其计算模型，利用ANSYS有限元软件建立了直线型一塔两线、三塔两线两种塔线体系模型，对其动力特性和风振响应情况进行了比较，并以此为基础对不同布置形式下小转角塔线体系的风振响应进行了对比分析。研究结果表明，一塔两线模型具有足够的计算精度，可以作为简化的计算模型应用于实际工程。对具有小转角的塔线体系而言，布置形式对其风荷载作用下结构的稳定性影响不大。

［关键词］窄基角钢输电塔； 塔线体系； 转角塔； 动力特性； 风荷载分配系数； 风振响应

中图分类号：TU391文献标识码：A文章编号：1002-848X(2020)01-0130-05

Study on wind-induced  response of transmission tower with narrow base tower-line coupling system

Tan Jinlin1, Huang Wenfeng1, Zhang Yan2

(1 College of Civil Engineering, Hefei University of Technology, Hefei 230009, China；2 Architectural Engineering Institute, Anhui Water Conservancy Technical College, Hefei 231603, China)

Abstract:The root span of angle steel transmission tower with narrow base is small, and the tower has high flexibility. The tower-line coupling system has the long-span characteristics that result in the wind-induced response is very obvious. In order to understand the wind-induced response of the narrow base tower-line coupling system and simplify the calculation model simultaneously,  two kinds of tower-line  coupling system finite element models which were the one tower with two lines and the three towers with two lines were established by ANSYS. Both the dynamic characteristics of the tower-line coupling system and the wind-induced response were compared. On this basis, this study did a comparative analysis about the wind-induced response of the small-angle tower-line coupling system with different layouts forms. The results indicated that the one tower with two-line model has sufficient computational accuracy and it can be used as a simplified calculation model for practical engineering. For the tower-line coupling system with small rotation angle, the layout forms have little influence on the stability of the structure under wind load.

Keywords:transmission tower with narrow base; tower-line coupling system; steering tower; dynamic characteristics; partition coefficient of wind load; wind-induced response

*国家自然科学基金(51408174)，中国博士后科学基金（2015T80652），安徽高校自然科学研究重点项目（K2016A294）。

作者简介：谭谨林，硕士，Email:514971311@qq.com。