Study On Evacuation Model Considering Pedestrian Flow Characteristics And Route Selection

The study of people's safe evacuation is of great significance,but the simulation of the evacuation process and the calculation of the evacuation time are very complicated.Here,this paper mainly combined experiment with computer simulation,proposed a network evacuation model which considers the characteristics of pedestrian flow and path selection.The model can accurately calculate the time of safety evacuation in the building,and can also accurately simulate the path selection of pedestrians in the actual situation.In summary,this paper has carried out research and innovation in these aspects:1.Through channel pedestrian flow experiment and room evacuation experiment,we use video extraction technology to track data of pedestrians,and use the corresponding algorithm to calculate the basic map of pedestrian flow.Finally we provide basis parameter selection for the modeling of network evacuation.2.We divide the network model nodes into five types according to the characteristics of the building and the evacuation characteristics of the people during the evacuation process.According to the structural characteristics of these different nodes and the flow characteristics of pedestrians,the pedestrian evacuation algorithms of different types of nodes are studied,and some assumptions about the conditions of the evacuation model are set up,so as to provide a theoretical platform for the establishment of the overall network evacuation model;3.We improved the previous network evacuation model by adding pedestrians in the past structure of the network models,and achieved a pedestrian oriented renewal mode.At the same time,we study pedestrians' path selection mechanism,and put the pedestrian flow parameters and pedestrian's path selection as information feedback into the model,so that the simulation results are more real and accurate.4.Based on the metro evacuation experiment,we applied the network evacuation model considering the characteristics of the pedestrian flow and route selection to the actual evacuation simulation,and compared with the experimental results to verifying the accuracy and practicability of the model.Therefore,this paper can not only provide a reasonable method for the simulation of evacuation process and the calculation of evacuation time,but also provide guidance and suggestions for the optimization design of building structure,the safety management of pedestrians,and the emergency evacuation plan of large public field.