论文部分内容阅读
为研究不同环境熟悉度下行人疏散时的特性,将熟悉度参数引入到传统地场模型中,修正模型的转移概率,并将模型中原有动态场改进为基于距离选择的动态场,建立扩展的行人疏散模型。以无障碍物建筑物及教室为例,分析熟悉度不变、可变时各参数对行人疏散的影响。数值模拟结果表明,扩展模型在给定静态参数条件下,疏散时间随熟悉程度的增加而减少;熟悉度较低时,陌生概率下的跟随移动策略优于其他策略;同时模型能够避免自身及后方行人的干扰。该模型可为建筑物设计、疏散性能评估和突发事件下的疏散引导等提供一定指导。
In order to study the characteristics of evacuation people with familiar familiarity in different environments, the familiarity parameter is introduced into the traditional field model, the transition probability of the model is modified, and the original dynamic field in the model is improved to a dynamic field based on distance selection to establish an extended Pedestrian evacuation model. Taking buildings and classrooms without barriers as an example, the influence of various parameters on the evacuation of pedestrians is analyzed when familiarity is constant and variable. The numerical simulation results show that the evacuation time decreases with the increase of familiarity under the given static parameters. When the familiarity is low, the follow-up strategy under unfamiliar probability is superior to other strategies. At the same time, the model can avoid itself and the backward Pedestrian interference. The model can provide some guidance for building design, evacuation performance evaluation and evacuation guidance under emergencies.