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首页> 外文会议>International Conference on Fire Science and Fire Protection Engineering >Study on The Influence of Piston Wind on Smoke Propagation in a Cross-typed Metro Transfer Station
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Study on The Influence of Piston Wind on Smoke Propagation in a Cross-typed Metro Transfer Station

机译：活塞风对跨型地铁转移站烟雾传播影响的研究

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摘要

Due to the buried structure of the cross subway transfer station, effect of piston wind in the station will influence fire smoke spread in underground platform. In this paper, large eddy simulation (LES) method is used to study the fire simulation in a cross-typed metro transfer station. Smoke diffusion, temperature and CO concentration distributions, wind speed at the stairway are predicted for different smoke control modes. Based on the on-site measurement results of piston wind at platform in a condition with non-stopping train, the influence of deep buried structure and piston wind effect on fire smoke spreading rule of underground platform is studied. Results show that the buried structure of transfer station affects the natural air supplement of the ground floor platform. The piston wind effect has an adverse effect on the air distribution in the fire. In addition, air supplement volume at stairway cannot meet the requirements of the standard of metro design.
机译：由于交叉地铁传输站的埋地结构，活塞风在车站中的效果将影响地下平台中的火灾烟雾。在本文中，大型涡流仿真（LES）方法用于研究跨型地铁传输站中的火灾模拟。烟雾扩散，温度和CO浓度分布，阶梯处的风速预测为不同的烟雾控制模式。基于在具有不停列车的条件下平台的活塞风的现场测量结果，研究了深埋结构和活塞风效应对地下平台火灾扫描规则的影响。结果表明，转移站的埋地结构会影响地板平台的天然空气补充。活塞风效应对火灾中的空气分布产生不利影响。此外，楼梯的空气补充量不能满足地铁设计标准的要求。

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