高速铁路隧道口微压波减缓措施的分析

Analysis of the Mitigation Methods of Micro-pressure Wave Generated Around High-speed Railway Tunnel Exits

为了进一步明确高速铁路隧道口微压波的基本特性及其减缓措施的作用机理,通过分析国内外现场量测、模型试验和数值计算得到的数据,对铁路隧道口的微压波的特征参数、影响因素进行了总结,对优化列车车头形状和在隧道入口设置缓冲结构等两种微压波减缓措施的作用机理进行了详细分析和解释。最后,针对国内铁路隧道的现状,提出了这两种减缓措施设置的优化原则,以对需要设置的减缓措施的参数进行充分优化,提出高效、经济的解决方案,保证列车具有足够的提速空间。

Characteristic parameters and affecting factors for highspeed railway tunnel erits are summarized to make sure of the basic characteristics of micro-pressure wave and the mechanism of its mitigation measures after data are analyzed which come from the results of foreign and internal model experiment, field measurement and numerical simulation. Then, the mechanism of optimum train nose shape and hood built at the tunnel portal are analyized and inter preted. Finally, according to the situation of national high-speed railway tunnels, the optimization principles of the methods are put forward to optimize their parameters and bring forward efficient and economical projects to make train at enough high speeds.