隧道内瞬变压力对既有客运铁路提速影响研究  

Influence of the Transient Pressure in a Tunnel on the Speed Increase of Existing Passenger Railway Lines

作　　者：张鹏[1] 

机构地区：[1]成都铁路局工务处,成都610081

出　　处：《现代隧道技术》2016年第2期101-106,共6页Modern Tunnelling Technology

摘　　要：为满足运力要求,成都铁路局计划将辖区内达成铁路既有线运营速度从160 km/h提高到200 km/h;遂成铁路既有线运营速度拟从160 km/h和200 km/h提高到250 km/h。为确保提速后乘客的舒适性,文章利用单维特征线法对列车在隧道中运行时的车内瞬变压力进行了计算,并与国内标准进行了比较,对提速车型做出了比选,验证了拟提高速度。研究结果表明:(1)从满足舒适度标准的角度考虑,建议选取CRH2型动车组作为运营列车,为此达成铁路及遂成线可分别提速至200 km/h和220 km/h;(2)单线隧道由于净空面积较小,在一定程度上对提速起控制作用,列车在双线隧道中运行时应尽量避免交会以降低瞬变压力超标的可能性;(3)除车速、断面面积的影响外,制定线路提速方案时更应注意运营列车的密封性能,并应坚持"一隧一算"的原则。In order to meet the requirements of transport capacity, Chengdu Railway Bureau plans to increase theoperating speed of some existing railways, i.e., the speed of the Dachuan-Chengdu railway will be increased from160 km/h to 200 km/h, and the speed of the Suining-Chengdu railway will be increased from 160 km/h and 200 km/h to 250 km/h. To ensure passenger comfort requirements after the speed-up, a single dimensional characteristiccurve method was used to calculate transient pressure inside the train running in the tunnels, and the results werecompared with domestic standards to select the vehicle type and verify the proposed speed. The results show that：considering the comfort standard, a CRH2 is recommended as the passenger train, allowing the operation speed ofthe Dachuan-Chengdu railway and the Suining-Chengdu railway to increase to 200 km/h and 220 km/h respective-ly; the single-track tunnel plays a controlling roll in the railway speed increase because of its small clearance area,and the passing of two trains should be avoided in the double-track tunnels to minimize the possibility of exceedingthe transient pressure standard; in addition to the effects of operation speed and sectional area, more attentionshould be paid to the sealing property of trains regarding the speed-increase plans, and the principle of＂indepen-dent dimensioning of every tunnel＂should be maintained.

关 键 词：既有客运铁路 提速 隧道 瞬变压力 

分 类 号：U451.3[建筑科学—桥梁与隧道工程]