浅谈交通换气力对公路隧道通风换气的影响

Influence of the air exchange force by traffic on ventilation in highway tunnels

本文利用日本有关的研究和实验结果，用计算方法求得我国大型车和小型车的正面投影面积人，可据以计算两者的阻力系数及相应的交通换气力。交通换气力对隧道通风的影响是不容忽视的。在采用纵流换气方式的单向交通隧道中，可将交通换气力全部利用，而在纵流换气的双向交通隧道中，交通换气力只能视为较大的阻力。

Through calculation based on the related study and experiment results,the front projected areas A,for large and small motor-cars made in China have been obtained with which the resistance factors and air exchange forces by traffic can be calculated.The influence of the traffic air exchange force on ventilation in tunnels is not negligible.For one-way traffic tunnels with lengthwise ventilation mode,the traffic air'exchange force can be fully applied and for two-way traffic tunnnels with the same mode,the traffic air exchange force can only be seen as greater resistance.