摘要
在客运专线列车穿越山区长隧道时,乘客气压舒适度是提高运营质量必须考虑的问题。简化了车内压力方程,对不同密封指数不同速度的高速列车穿越山区长隧道时的多种工况进行了数值模拟。参考隧道内瞬变压力向车内传播的规律和相应的舒适度标准,对计算结果进行了详细分析。在着重研究了车内压力变化产生原因的基础上,进一步分析了车辆密封指数对车内气压舒适度的深刻影响,并提出提高舒适度等级的建议。
When the train on a passenger railway line passes through a long tunnel in mountainous area, more attention should be paid to aural comfort of passengers in order to enhance the quality of transportation. In this paper, the internal pressure equation of train is simplified, and multifarious situation is numeral simulated with different air-tightness index and speed of the train. With reference to the rule of air pressure transient disseminating into the train in the tunnel and the corresponding passenger comfort criteria, the calculation results has been analyzed in detail. Based on emphatic investigation of the reasons of pressure variations in the train, further analysis is carried out of the profound influence of the air-tightness index on eardrum comfort of passengers, and the enhanced criteria of eardrum comfort is proposed as well.
关键词
客运专线
隧道
瞬变压力
舒适度
密封指数
passenger railway line
tunnel
air pressure transient
eardrum comfort of passengers
air-tightness index
