某地铁站台防烟分区存在问题分析

Analysis of smoke control zoning for an underground railway platform

采取实地调查的方法分析了某地铁站台防烟分区不能分隔烟气的原因，结合FDS模拟计算给出了改进措施：由高度为0．5～0．6m的中梁加挡板、邻近轨道上方的挡板作为挡烟垂壁，将站台划分为2个独立的防烟分区，每个防烟分区的排烟量不小于1m^3／（m^2·min），能有效阻止常见行李火灾的烟气蔓延。

Probes into the causes of the smoke control zoning can not prevent smoke effectively, and gives the solution based on FDS simulation results, which divides the platform into two smoke control zones by using longitudinal girdles adding plates with height of 0.5-0.6 meters and plates near track area ceiling as hanging walls. Inside each of the zones, exhaust smoke rate not less than 1 m^3 per square meter per minute can effectively prevent unexpected smoke motion under the condition of common baggage fire.