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采用标准的k-ε湍流模型,对安设屏蔽门系统的三维岛侧混合地铁站台的不同火灾场景进行了数值模拟研究。结果表明;火灾发生在地铁侧式站台时,邻近的楼梯口的烟囱效应显著,成为喷烟口;火灾发生在岛式站台时,烟气主要向站台的隧道两侧蔓延;屏蔽门对热量的传递起到了阻碍作用,对烟气的蔓延起到阻挡和推迟作用,对人员的安全疏散起着至关重要的作用。
The standard k-ε turbulence model is used to simulate the different fire scenarios of the three-dimensional island-side mixed metro station with screen door system. The results show that when the fire occurred on the side platform of the subway, the chimney effect of the adjacent stairway was significant and became a smoking mouth; when the fire occurred on the island platform, the flue gas mainly spread on both sides of the platform tunnel; Transmission has played a blocking role, which has played a blocking and delaying role in the spread of flue gas and plays a crucial role in the safe evacuation of personnel.