地铁换乘站共用站厅疏散数值模拟研究

Numerical simulations study on evacuation of the common concourse of subway transfer station

针对某地铁站厅层与国铁出站层共用地下一层出站大厅,地铁站厅层的付费区位于国铁地下一层进出站大厅内部,没有自身独立的疏散出口,需要通过国铁的出站大厅向外疏散的问题,对站厅层的人员安全疏散策略进行研究,从主通道防火卷帘降落方式、疏散楼梯使用等方面给出了具体措施。采用CFD数值模拟方法进行了验证。量化分析表明,给出的消防安全策略是合理可行的。

A subway transfer station sharing one underground concourse with railway station was studied, whose pay zone locates inside the underground entrance hall of railway station, and has no self-governed evacuation exit, so people need to evacuate through the entrance hall of the railway station. Against the problem, the evacuation strategy of the transfer station was studied, and countermeasures were put forward in points of main channel fire shutter falling mode, evacuation stairs usage, etc. CFD simulations were carried out to verify the strategy. Quantitative analysis showed that, the fire safety strategy is reasonable.