两列车在隧道中交会期间的压力瞬变的数值计算  

Numerical Computation of Pressure Transients During the Crossing of Two Trains in a Tunnel

作　　者：赵海恒[1] 黄美荣[1] 王运时[1] 

机构地区：[1]西南交通大学机械工程学院

出　　处：《西南交通大学学报》1999年第2期127-132,共6页Journal of Southwest Jiaotong University

基　　金：铁道部科技发展计划项目

摘　　要：以一维可压缩不稳定等熵流理论为基础提出了一种适用范围较为广泛的计算会车期间压力瞬变的方法。建立了模拟会车期间流动的边界条件方程，提出了一种新的跟踪列车运动的网格系统。通过与实测的会车期间压力瞬变曲线对比，验证了本文中提出的方法。并对会车期间的压力瞬变的特征进行了讨论和分析。A widely applicable calculation method for the prediction of pressure transients during the train crossing in a railway tunnel is proposed based on one dimensional unsteady compressible homentropic flow theory. Equations of boundary conditions are built for modeling the flow during the crossing period, and a new grid system for tracking the motion of trains is proposed. The proposed method is verified by comparing it with the practically measured pressure transients. The characteristics of the pressure transients during train crossing are also discussed.

关 键 词：高速列车 隧道 压力瞬态 会车 数值计算 列车 

分 类 号：U459.1[建筑科学—桥梁与隧道工程] U451.3[交通运输工程—道路与铁道工程]