东南大学学报（自然科学版）2025，Vol.55Issue(5)：1265-1274,10.DOI:10.3969/j.issn.1001-0505.2025.05.006
悬索桥覆冰吊索的气动力特性研究
Study on the aerodynamic force characteristics of the iced hanger of suspension bridge
摘要
Abstract
The hanger of suspension bridge accumulates ice easily in cold environment,which seriously af-fects the operation safety of suspension bridge.To study the aerodynamic force characteristics of the iced hanger,experiments on the smooth hanger under rime and glaze weather conditions were conducted respec-tively in ice wind tunnel,and the ice structures on hanger obtained by experiments were collected using 3D scanning technology.Then the shape of the iced structure in experiments was simplified in three different methods,and three corresponding ice covering models(2D smooth,2D rough and 3D rough)were designed and processed.The aerodynamic characteristics of the three models are compared and studied through the force measurement test of the rigid segment model finally.The results show that the roughness is unevenly dis-tributed on the surface with strong three-dimensional characteristics,which is more prominent for rime condi-tion.The drag coefficient of the iced hanger is smaller than that of smooth hanger in most wind attack angles under Reynolds number ranging from 6×104 to 9×104.Gallop instability is discovered in special wind attack angles for all three models according to Den Hartog theory.Compared with other two two-dimensional simpli-fied models,the galloping instability interval of the three-dimensional rough ice structure is the smallest while the Den Hartog coefficients is the biggest.关键词
覆冰吊索/结冰风洞/测力试验/气动力/驰振Key words
iced hanger/ice wind tunnel/force test/aerodynamic force/galloping分类
交通工程引用本文复制引用
黄智文,杨伦,李欢,曹益文,何旭辉,华旭刚..悬索桥覆冰吊索的气动力特性研究[J].东南大学学报（自然科学版）,2025,55(5):1265-1274,10.基金项目
国家自然科学基金资助项目(52422806). （52422806）
