摘要
以广州天河商业中心的地标性建筑为例,分别运用FDS+Evac模型和Pathfinder模拟器,建立了高层建筑的人员疏散模型。结合室内人员疏散行为和烟气蔓延速度、温度、CO浓度以及能见度的变化规律可知:(1)疏散过程明显分为开始阶段和中间过程两个阶段。高层建筑中起决定性作用的是第二个阶段。在中间过程阶段,适当地进行诱导,避免人员拥堵或再次选择移动空间大而背离出口方向移动,有利于人员的疏散;(2)FDS+Evac模型中人员之间的距离较大,疏散速度较快,但并不符合实际情况;(3)虽然在疏散初期Steering模型疏散的人员较少,但随着时间的推移,Steering模型因合理的路径规划、搜索运动和躲避原则,最大可能地减少了拥塞,疏散效率更高。因此,Steering模型更适合于公众聚集场所的应急诱导疏散。
The landmark building in commercial center of Guangzhou Tianhe is chosen for research,and the high-rise building evacuation model is established both in FDS＋ Evac and Pathfinder model.Combined the evacuation behavior and smoke spread velocity,temperature,CO concentration and visibility variation,it is found that：（1）the evacuation process clearly divided into two stages and the second phase plays a decisive role.In the middle stage of the process,as appropriate for induction and avoid congestion or choose to move a large space again depart from the export direction which is fit for people escape.（2）In FDS＋Evac model the distance is large between personnel,and the evacuation is faster,but does not meet the actual situation.（3）While the initial evacuation are fewer in Steering model,but as time goes by,the evacuation efficiency is higher thanks to the path planning,search motion and evade principle.Therefore,Steering model is more suitable for the induction of public gathering places in emergency evacuation.
出处
《消防科学与技术》
CAS
北大核心
2013年第12期1327-1330,共4页
Fire Science and Technology
基金
广东省科技计划项目(2011A030200004)
广东省安全生产专项资金资助项目(2012-161)
