列车运营组织对活塞风井换气量的影响分析
Influence of train operating organization onairflow exchange volume of vent shafts
摘要：
以某市域铁路工程为例，通过采用一维数值模拟方法建立模型，对该工程中地下车站活塞风井换气量进行了模拟计算。在不同的列车运营组织条件下，研究了车速（80~120 km/h）、行车密度（5~30对/h）及停站时间（20，30，40 s）等设计参数对活塞风井进、出风量的影响。方差分析结果表明，行车密度是影响活塞风井换气量的显著因素。通过二次多项式拟合得到了活塞风井进、出风量随行车密度的变化曲线，可用于类似市域铁路工程地下车站活塞风井换气量预测与核算。
Abstract：
Taking a suburban railway project as an example, simulates the airflow exchange volume of vent shafts in the underground station by establishing a 1D numerical simulation model. Under different train operating organization conditions, studies the influences of design parameters such as vehicle speed (80 to 120 km/h), train density (5 to 30 pairs/h) and dwell time (20, 30, 40 s) on the inlet and outlet air rate of vent shafts. The result of ANOVA (analysis of variance) indicates that the train density is the most significant impact factor for the airflow exchange volume of vent shafts. Obtains the variation curve of the inlet and outlet air rate of vent shafts with train density based on the quadratic polynomial regression, which can be used for the prediction and calculation of airflow exchange volume of vent shafts in similar suburban railway underground stations.
Keywords:suburban railway, operating organization, underground station, vent shaft, airflow exchange volume, numerical simulation