城际铁路地下站房烟气控制及疏散安全研究

RESEARCH ON SMOKE CONTROL AND EVACUATION SAFETY FOR UNDERGROUND STATION OF INTER-CITY RAILWAY

针对城际铁路地下站房空间受限、人员疏散出口较少和排烟困难等特点,从排烟方式、防烟分区、排烟量计算、楼梯口风速控制方面论述了城际铁路地下站房的烟气控制策略。结合典型工程案例,采用FDS模拟论证了烟控系统的有效性,并对比分析了两种楼扶梯口挡烟措施的优劣;采用pathfinder软件模拟了不同场景下人员的疏散安全性。结果表明:在楼扶梯口设置自动挡烟垂帘的挡烟效果优于采取防火玻璃(门)分隔,在提出的烟控策略有效的条件下,能够保证人员疏散安全;分析方法对同类工程的消防设计具有参考意义。

Based on the problem of space limitation,evacuation exits less,and smoke extraction difficulties of underground stations of inter-city railway,the smoke control strategy were described from smoke management,smoke prevention zoning,smoking emission calculation,and wind speed control of stair opening. According to a typical engineering project example,combining with FDS numerical simulation means,the smoke control effectiveness was analyzed,besides,the advantages and disadvantages of two retaining smoke measures of stair opening was comparatively analyzed. the personnel evacuation security was simulated by software of pathfinder under different scenes. The results show that retaining smoke effect of automatic retaining smoke curtain falling was better that of fire protection glass & door,and the personnel evacuation could be ensured when the smoke control strategy was valid. The analytical method will provide references to the similar engineering evacuation design.