Modeling And Characteristic Analysis Of Pedestrian Flow In Outpatient Hall Based On Heterogeneous Peer

As a functional service space in the hospital outpatient hall,the internal pedestrian traffic flow is more complicated than other buildings.Among them,due to the social relationship of pedestrians,the hospital contains more heterogeneous peer groups.Heterogeneous peer group refers to a small group of individuals with differences in physical condition and psychological pressure,and this abnormal state has a certain degree of persistence.Its traffic travel characteristics show differences from individual travel,tending to adopt a common speed and direction for unified movement,and achieve overall unity by coordinating internal pace.The microscopic simulation study of pedestrians in the hospital can analyze and evaluate the current hospital space from quantitative data,which has a guiding role in the design and optimization of the plan.This paper adopts the idea of “Pedestrian Flow Survey in Outpatient Hall-Analysis of Traffic Characteristics of Heterogeneous Peer Group-Microscopic Motion Model of Heterogeneous Peer Group-Simulation Modeling of Heterogeneous Peer Group-Model Validation-Case Application of Nanning First People’s Hospital”.Based on the distribution characteristics of pedestrians in the outpatient hall of the hospital,traffic characteristics analysis is mainly conducted for heterogeneous peer groups.Establish a microscopic movement model of heterogeneous peer groups facing the hospital outpatient hall.Finally,the model is verified by simulation and actual application,which can not only enrich the existing pedestrian flow micro-model research,but also provide a quantitative analysis basis for the hospital scene.The main research contents of this paper include:(1)Traffic characteristics of heterogeneous peer groups.The Nanning First People’s Hospital was selected as the research scene to collect basic data such as pedestrian flow composition,flow,and pedestrian flow lines.Focus on the analysis of the characteristics of the traffic travel of the heterogeneous peer group,and analyze the characteristics of the traffic travel from the aspects of speed,demand space,and form.At the same time,it is found that such people tend to adopt a common speed and direction for movement,and the overall speed is affected by heterogeneous individuals.Heterogeneous peer groups may have three different conflict avoidance behaviors when they may conflict with pedestrians.(2)Establishment of heterogeneous peer group model.Based on the analysis of the travel characteristics of heterogeneous peer groups,the current traditional social power model is analyzed for its shortcomings.In order to show the characteristics of pedestrians walking in groups,the force of the peer group is introduced;because the overall speed of the heterogeneous peer group is affected by the heterogeneous individual.As a result,the influence factor of heterogeneous individuals is introduced to improve its own driving force to describe the behavior of heterogeneous peer groups traveling at a common speed;in addition,avoidance force is introduced to describe the interaction between heterogeneous peer groups and individual pedestrians.(3)Simulation environment construction and model verification.Anylogic is selected as the simulation platform,and the pedestrian flow simulation model is constructed in the outpatient hall of Nanning First People’s Hospital in combination with pedestrian flow.Based on the basic data of the investigation and combined with previous research,the relevant parameters of the heterogeneous peer group model are calibrated.It is verified with actual data from the three aspects of companions of heterogeneous peer groups,pedestrian traffic flow speed-density relationship diagrams,and speed characteristics of heterogeneous peer groups.The results show that this model has a good descriptive ability for heterogeneous peer groups..(4)Actual case application of Nanning First People’s Hospital.Build a grading method for pedestrian service levels in outpatient halls.Simulate the current dynamic operation of pedestrians in Nanning First People’s Hospital,output quantitative data such as pedestrian density maps,pedestrian flow in waiting areas,and pedestrian travel time,and analyze and summarize the congestion and conflict problems in the hospital.Guided by the current design problems of the outpatient hall of the hospital,targeted optimization,simulation and simulation of the plan before and after optimization of Nanning First People’s Hospital,quantitative output and analysis of pedestrian traffic flow data.The results show that the optimized scheme can improve the service level as a whole,reduce the number of people staying in the corridor gathering area by 20%,reduce the pedestrian travel time by 15%,and effectively improve the efficiency of the hospital.