火灾环境下多层建筑的人员疏散路径模型研究

Study on Occupant Evacuation Model of Multi-story Building in Fires

针对公共路段人员交汇出现的疏散速度减缓问题,构建了一个多层建筑的人员疏散最优路径模型。该模型以优先满足疏散时间较长的楼层为前提,保证任意时刻任意路径的人员流量不为零,同时优先使最短路径达到人员流量饱和,在此基础上对其算法步骤进行了改进。最后结合实例进行验证,结果表明,本模型可以更加准确地预估疏散所需时间。

An evacuation path model of multi-story building is established in this study based on the evacuation velocity reduction problem in public section. This model is set up on the premise that evacuees of the upper floor are firstly evacuated,and personnel flow is above zero all the time,in addition,the shortest evacuation path is fully used firstly,then the algorithm of evacuation model is further optimized. Finally,an example is further presented to show the feasibility. The results show that the model can more precisely evaluate the evacuation time.