铁道科学与工程学报2025，Vol.22Issue(5)：2280-2292,13.DOI:10.19713/j.cnki.43-1423/u.T20241185
强风沙环境下接触网正馈线舞动响应研究
Galloping response of catenary auto transformer feeder of under strong wind and sand environment
摘要
Abstract
The areas along the Lanzhou-Xinjiang high-speed railway have strong winds and serious desertification,and are frequently attacked by sand and dust storms.To explore the influence of strong wind and sand environment on the galloping of the catenary auto transformer feeder of the Lanzhou-Xinjiang high-speed railway,based on SST k-ω turbulence model and Euler-Euler two-fluid model,the aerodynamic calculation model of the auto transformer feeder was established.The variation of wind speed and wind elevation angle at the position of the auto transformer feeder was simulated.The aerodynamic characteristics of the catenary auto transformer feeder under different sand concentrations and wind speeds were explored.Then,the finite element model of the auto transformer feeder was established by ANSYS finite element software.The Davenport wind speed spectrum was used to simulate the fluctuating wind field at the auto transformer feeder.The corresponding wind load was applied to the wire to analyze the galloping response of the auto transformer feeder in the strong wind and sand environment.The results show that with the increase of the volume fraction of the sand phase,the wake oscillation behind the wire gradually disappears,and the velocity distribution of the flow field tends to be average.The aerodynamic drag coefficient of the wire decreases with the increase of wind speed,and increases with the increase of sand concentration.The fluctuation range of the aerodynamic lift coefficient is smaller than that of the net wind environment,and it changes alternately positive and negative and approaches 0,which is random.The research results can further reveal the galloping mechanism of catenary additional wire under the influence of wind and sand,and provide theoretical support for the anti-galloping design of catenary in sand storm environment.关键词
风沙环境/正馈线/欧拉两相流/体积分数/气动特性/舞动响应Key words
sandy environment/auto transformer feeder/Eulerian two-phase flow/volume fraction/aerodynamic characteristics/galloping response分类
信息技术与安全科学引用本文复制引用
赵珊鹏,张鹏飞,张友鹏,葛磊蛟,刘源涛,李军丽,任丽苗..强风沙环境下接触网正馈线舞动响应研究[J].铁道科学与工程学报,2025,22(5):2280-2292,13.基金项目
国家自然科学基金资助项目(51867013) （51867013）
甘肃省自然科学基金资助项目(25JRRA174) （25JRRA174）
国铁集团系统性重大科技项目(2024XTZD03) （2024XTZD03）
中国铁路北京局集团有限公司科技研究开发计划(2024AGD03) （2024AGD03）
天津市自然科学基金多元投入重点项目(22JCZDJC00660) （22JCZDJC00660）
