艰险山区客运专线铁路隧道缓冲结构研究

高速列车进出隧道形成的压力波带来乘客舒适度下降、隧道洞口噪声污染、威胁隧道洞口建筑物安全等多种不利影响。为了深入研究高速铁路隧道洞口微压波特性,确定各种缓冲结构在控制微压波方面的效果,提出缓冲结构设计的合理方案。通过模拟实验和数值分析,对主要缓冲结构设置形式进行了分析,并针对艰险山区隧道洞口提出了缓冲结构设计的合理方案。

Research of Tunnel Portal Buffer Structure on Passenger Dedicated Line in Complicated Mountain Area

The pressure wave,which is caused by high speed train passing in and out of tunnel,will produce various adverse effects such as the decline in riding comfort level,the noise pollution at tunnel portal,the menace to the safety of tunnel portal structure and so on. For this reason,the purpose of the paper was to research intensively the characteristics of micro pressure wave at tunnel portal of high-speed railway,to ascertain the actual effects of various portal buffer structures in controlling micro pressure wave,so as to put forward reasonable design scheme of portal buffer structure. By means of model experiment and numerical analysis,this paper researched the main types of portal buffer structures,and eventually put forward a reasonable design scheme of portal buffer structure which is suitable for these tunnels located in complicated mountain area.