高速地铁隧道压力波研究

摘要

根据地铁隧道结构,基于一维特征线理论,建立了含地铁区间隧道及竖井的隧道压力波计算模型.采用数值计算方法对地铁隧道压力波进行了研究,分析了列车运行速度、隧道横截面积、竖井横截面积及密封指数对车内压力变化的影响,根据压力变化的舒适度标准,给出了不同列车运行速度条件下高速地铁隧道设计参数的建议.%Establishes a numerical model of pressure wave in underground railway tunnel with shafts based on one-dimensional characteristic line theory according to the structure of underground railway tunnel.By means of numerical calculation,analyses the influence on pressure change inside the underground railway by train speed,cross section area of tunnel,cross section area of shaft and airtightness index.Based on the comfort level of the pressure change,gives the recommendations of highspeed underground railway tunnel design parameters under various train speed.