高速列车单列通过时双线隧道内列车风分布规律研究  

Study on the Slipstream Distribution by a Single Train Running Through a Double-Track Tunnel

作　　者：管鸿浩[1,2] 龚彦峰 踪敬良[1,2] 焦齐柱 耿语堂[3] GUAN Honghao;GONG Yanfeng;ZONG Jingliang;JIAO Qizhu;GENG Yutang(China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China;NATIONAL-OCAL Jonit Engineering Research Center of Underwater Tunnelling Technology,Wuhan 430063,China;MOE Key Lab of Traffic Safety on Track,Central South University,Changsha 410075,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,武汉430063 [2]水下隧道技术国家地方联合工程研究中心,武汉430063 [3]中南大学轨道交通安全教育部重点实验室,长沙410075

出　　处：《铁道标准设计》2022年第6期83-89,共7页Railway Standard Design

基　　金：中铁第四勘察设计院集团有限公司科研课题(2020K057)。

摘　　要：为得到高速列车单列通过双线隧道引起的列车风分布规律,采用三维、可压缩、非定常的Navier-Stokes方法对隧道内的流场进行数值模拟研究。研究结果表明,隧道内列车风主要由纵向分量构成,横向分量和垂向分量对列车风的影响较小,在靠近列车运行一侧,列车风峰值出现在列车尾部经过时,而远离列车运行一侧,列车风峰值出现在列车未到达时;同一截面位置处列车风在车尾经过前,表现出较强的一维效应,在车尾经过后表现出明显的三维效应;在远离列车运行一侧,当距离隧道中线超过4 m后,列车风峰值的横向分布基本保持不变。在隧道中线位置,从垂向高度1 m到垂向高度2 m纵向列车风速度峰值迅速下降,垂向高度大于2 m后列车风速度峰值差别较小;隧道内不同位置处的动压值基本稳定在1 000~1 300 Pa。In order to obtain the law of slipstream distribution caused by a single train passing through a double-track tunnel, the three-dimensional compressible and unsteady Navier-Stokes method is used to simulate the flow field in the tunnel. The results show that the slipstream in the tunnel is mainly composed of longitudinal component, and the transverse component and the vertical component have little effect on the slipstream. On the side near the train, the peak value of the slipstream appears when the tail of the train passes;while on the side far away from the train, the peak value of the slipstream appears before the train arrives. At the same section, the slipstream shows a strong one-dimensional effect before the tail of the train passes by, and an obvious three-dimensional effect after the train passes by. In the lateral direction, when the distance from the centre line of the tunnel is more than 4 m, the peak value of slipstream basically remains unchanged. In the middle of the tunnel, from the vertical height of 1 m to 2 m, the peak value of the longitudinal slipstream speed decreases rapidly. When the vertical height is greater than 2 m, the peak value of the longitudinal slipstream speed has small difference. The wind pressure values at different positions in the tunnel are basically stable between 1 000~1 300 Pa.

关 键 词：高速铁路 双线隧道 列车风 分布规律 Navier-Stokes方法 数值模拟 

分 类 号：U238[交通运输工程—道路与铁道工程] U451.3[建筑科学—桥梁与隧道工程]