强横风对弯道路堤上NJ2车体表面压力的影响分析  

Analysis of the Influence of Strong Cross-winds on the Pressure of NJ2 Vehicle Body Surface on Curved Embankments

作　　者：杨敏[1] YANG Min(School of Civil and Transportation Engineering,Qinghai University for Nationalities,Xining 810007,China)

机构地区：[1]青海民族大学土木与交通工程学院,青海西宁810007

出　　处：《科技创新与生产力》2025年第1期92-95,共4页Sci-tech Innovation and Productivity

摘　　要：应用SolidWorks2018/Flow Simulation“一体化”软件进行数值模拟,提取了头车横向压差与侧偏角、路堤高度间的变化曲线,并与直线线路相比较,由此得出直线线路上的列车横向压差特性曲线介于同条件下弯道上横风向弯道内、外的曲线之间;弯道圆曲线半径小于450 m情况,横风向弯道内更危险;弯道路堤应重视侧偏角50°~60°、堤高15 m~20 m的列车头部的气动性能,通过大风环境下青藏线弯道路堤上NJ2“三机联挂”列车气动特性,为大风环境下列车的安全运行提供参考。Using SolidWorks 2018/Flow Simulation for numerical simulation,this paper extracts the variation curves between the lateral pressure difference of the head vehicle and the lateral deviation angle,as well as the height of the embankment,and compares with straight lines.The results show that:The lateral pressure difference characteristic curve of trains on straight lines is between the curves inside and outside the cross-wind bend on the same conditions;when the radius of a circular curve in a bend is less than 450 m,it is more dangerous inside the cross-wind curves;the aerodynamic performance of the train head with a lateral deviation angle of 50°to 60°and a embankment height of 15 m to 20 m should be emphasized for curved embankments.By studying the aerodynamic characteristics of NJ2"three machine coupling"trains on the curved embankment of the Qinghai-Tibet Railway under strong wind conditions,this study provides reference for the safe operation of trains in strong wind environments.

关 键 词：横风 列车 空气动力学 侧偏角 路堤 

分 类 号：F713.55[经济管理—市场营销]