摘要
高速铁路在世界各国范围内建成和运行的同时,作为快捷、舒适、节能交通工具,超高速列车将成为轨道交通的下一个发展方向。而随着列车速度的提升,列车空气阻力明显增加。为有效降低空气阻力,实现列车超高速运行,真空管道交通应运而生。管道参数一直是真空管道交通系统所关注的重点之一,为明确管道参数与列车行车速度之间的关系,得出简便适用的真空管道参数设计方法,基于原朝茂理论,以时速350km列车在高铁标准断面隧道中运行时的空气阻力为控制指标,对超高速列车的阻塞比、行车速度及运行管道工作气压的相互影响规律进行了细致研究,并将列车在低压管道运行空气阻力的理论值与数值计算结果进行了比较。研究表明:1)低压真空管道列车空气阻力数值计算结果与原朝茂理论计算值相互吻合,可以基于原朝茂理论对真空管道列车空气阻力特性进行分析;2)给出了基于高速列车隧道阻力的超高速列车运行管道运行参数设计方法和参数选取曲线,研究结果可为低压真空管道的工作参数的选取提供理论依据。
While high-speed railways have been built and operated worldwide,super-high-speed railways will become one of the development trends of rail transit,as a fast,comfortable,and energy-saving mode of transportation.As train speed increases,the aerodynamic drag of trains increases significantly.To effectively reduce the aerodynamic drag and realize the super-high-speed traffic,evacuated tube transportation arises at the historic moment.The evacuated tube parameters have always been one of the focuses of evacuated tube transportation.To clarify the relationship between evacuated tube parameters and train speed,and obtain a simple and applicable design method of evacuated tube parameters,in this paper,the aerodynamic drag of trains traveling in standard high-speed railway tunnel at the speed of 350 km/h is taken as the criterion,and detailed researches are conducted on the mutual influence of blockage ratio,train speed,and internal tube pressure based on Tomoshige Hara Theory.Moreover,the theoretical values of the aerodynamic drag of trains traveling in evacuated tube are compared with that of numerical results.The research results show that:(1)The theoretical value nearly fits the numerical one.Therefore,the aerodynamic drag characteristics of evacuated tube transportation trains can be analyzed based on Tomoshige Hara Theory.(2)A parameter design method and parameter selection curve of evacuated tube based on the aerodynamic drag of high-speed trains is given,which can provide theoretical guidance for the selection of working parameters of evacuated tube.
作者
骆阳
王英学
任文强
LUO Yang;WANG Yingxue;REN Wenqiang(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,Sichuan,China)
出处
《隧道建设（中英文）》
CSCD
北大核心
2021年第S01期345-351,共7页
Tunnel Construction
基金
国家自然科学基金资助项目(51778539)
关键词
超高速列车
真空管道
空气阻力
工作气压
阻塞比
supper-high-speed trains
evacuated tube
aerodynamic drag
internal tube pressure
blockage ratio
作者简介
第一作者:骆阳(1994—),男,重庆合川人,2020年毕业于西南交通大学,建筑与土木工程专业,硕士,现从事隧道通风和高速铁路隧道空气动力学研究。E-mail:2733498803@qq.com;通信作者:王英学,E-mail:wangyingxue@swjtu.edu.cn。
