【摘要】 立足于排烟目标和排烟与疏散的关系,剖析站台上部排烟、纵向排烟两类基本模式的气流组织、排烟量、风速及疏散条件等设计要素。探讨了站台敞开楼扶梯口的防护方式,并对站台采用纵向排烟、开启屏蔽门排烟方案等典型案例进行安全性分析。提出站台排烟气流组织、楼扶梯口的防护方式以及疏散方案,是站台火灾控烟需要考虑、且相互关联的重要因素。更多还原

【Abstract】 There are two basic smoke exhaust modes from station platform; one exhausts from the platform ceiling and the other exhausts in longitudinal direction. Based on the smoke exhaust target and the relationship between smoke exhaust and evacuation, the above two exhaust modes are analyzed in the aspects of airflow organization,smoke exhaust volume, air speed, evacuation conditions and etc. And the protection for the bottom of the staircase or escalator on the platform is explored. The typical cases of smoke exhaust in longitudinal direction and smoke exhaust by opening platform screen door are analyzed from the safety aspect. It points out that the airflow organization of smoke exhaust at platform, the protection at the bottom of the staircase or escalator and the evacuation plan are the important and correlated factors in the smoke control of platform fire.更多还原