CAJ | 학술논문

采用高速铁路隧道空气动力效应的研究方法,对地铁内列车的运行过程进行了模拟,分析了地铁条件下车体压力的变化规律,研究了中间风井和区间隧道通风对车体压力的影响.结果说明,当列车时速达到100 km/h时,地铁内就会出现显著的空气动力效应;对于无中间风井的区间隧道,车体压力变化规律与高速铁路类似,设置中间风井可减缓车体压力;采用多个不大于0.5倍隧道有效断面积中间风井的设置措施不仅能满足区间通风要求,也有利于降低车体压力;区间隧道通风只整体平移车体压力,不改变车体压力的幅度.
채용고속철로수도공기동력효응적연구방법,대지철내열차적운행과정진행료모의,분석료지철조건하차체압력적변화규률,연구료중간풍정화구간수도통풍대차체압력적영향.결과설명,당열차시속체도100 km/h시,지철내취회출현현저적공기동력효응;대우무중간풍정적구간수도,차체압력변화규률여고속철로유사,설치중간풍정가감완차체압력;채용다개불대우0.5배수도유효단면적중간풍정적설치조시불부능만족구간통풍요구,야유리우강저차체압력;구간수도통풍지정체평이차체압력,불개변차체압력적폭도.
Based on the analysis method of tunnel aerodynamic effect in high speed railway, the train trav-eling process in subway was simulated and the static pressure evolution in train wagon was studied. Mean-while, the influences of the air shaft and ventilation system of tunnel sections on the wagon pressure were discussed in detail. The results show that there is a significant tunnel aerodynamic effect when the train speed reaches 100km/h in subway. The static pressure evolution of train wagon should be consistent with high speed railway if there is none ventilation shaft in tunnel sections, while the pressure should evolutes rel-atively independently at the both side of shaft. The ventilation shaft can decrease the wagon pressure, and its depressurization effect is obvious when the shaft area is limited within 0.5 times of the tunnel. The multiple shafts with a smaller area should be considered when the design speed exceeds100km/h. The ventilation sys-tem of tunnel sections only change the wagon pressure parallel, but not change its amplitude. Hence the ven-tilation system of tunnel sections has nothing to do with the passengers' aural discomfort for the static pres-sure evolution of subway train wagon.