双线隧道提速后的瞬变压力及缓解措施

Research on the Problem of Transient Pressure in Tunnel of China's Double Track Railway with the Trains Being Speed up and its Reduction Measures

研究目的:通过计算,分析我国双线隧道中存在的瞬变压力问题,并提出相应的缓解措施。研究方法:以兰武二线中的双线隧道为例,采用公式法和M atlab多项式拟合出列车速度与最大瞬变压力的关系曲线。研究结果:计算结果表明:在上古浪峡隧道中,当列车速度超过145 km/h时,瞬变压力不能满足旅客乘车的“舒适度”标准。研究结论:提速后,我国既有线上一些双线隧道的瞬变压力不能满足旅客乘车的“舒适度”标准。在以后的建设中,应根据具体情况采取主动或被动缓解措施。

Research purposes： According to the calculation, this paper analyzed the transient problem of existing double -track tunnel and put forward the reduction measures. Research methods：Take the double -track tunnel in the Lanzhou -Wunan for example, the relation graph of train speed and maximum pressure has been simulated and figured out with the formula. Research results：The result of calculation indicates that transient pressure on the tunnel of Shanggulangxia can not reach the standard of comfort while traveling speed is over 145 km/h. Research conclusions： With the trains being - speed up, the transient pressure of double - track tunnel in the existing railway can not reach the standard of comfort. In the future construstion, we should take active or passive reduction methods according to the specific situation.