考虑车内瞬变压力指标的城际铁路隧道净空面积研究

列车速度较高时,铁路隧道净空面积的确定不能仅考虑隧道建筑限界和机车车辆限界,还要考虑列车通过隧道时诱发的气动效应,其中车内瞬变压力指标是需要着重考虑的问题。我国城际铁路建设刚刚起步,没有针对城际铁路隧道净空面积的规范出台,各设计单位参照客运专线铁路的标准并结合我国实际情况考虑了车速120、160、200 km/h的城际铁路隧道净空面积,但此隧道净空面积在我国列车实际密封性能条件下是否能够满足舒适度标准仍需予以论证。结合我国列车实际密封性能和现行舒适度标准,通过大量数值计算,提出了考虑车内瞬变压力指标的我国城际铁路隧道需满足的净空面积值,可为我国城际铁路相关标准、规范的制订提供参考依据。

Study on Intercity Railway Tunnel Cross-section Based on Transient Pressure inside Train

When train speed is high, the railway tunnel cross-section can not only consider the tunnel construction clearance and the rolling stock clearance, but also consider the aerodynamic effect, and the transient pressure inside train is a problem to consider mainly. The construction of intercity railway is starting in our country, the intercity railway tunnel cross-section standards is not formulated. Design departments reference standard for passenger dedicated railway and unifies our country actual situation, proposed intercity railway tunnel cross-section of speed 120, 160, 200km/h, but the tunnel cross-section in our country actual train sealing conditions are able to meet the comfort standards still need to be proved. Combined with our country actual train sealing conditions and the current standards of comfort, with a lot of numerical calculations, our country intercity railway tunnel cross-section based on transient pressure inside train was put forward in this article. The research results can provide a reference for formulating the intercity railway related standards in our courntry.