Simulation Model Of Bus Passengers Boarding And Alighting Based On The Social Force Model And Its Application

As a kind of transportation mode with large capacity and low energy consumption,public transport plays an important role in the urban comprehensive transportation system.At present the service level of China's urban public transport system is enough to meet the demand of large-scale travel.How to reduce the delay of bus operation is the key factor to increase the attractiveness of bus travel.Passengers boarding and alighting can be the most important part of the bus dwelling which will directly affect the efficiency of bus operation during peak periods.The paper focuses on passengers boarding and alighting period during bus dwelling phase and conduct in-depth research to model and quantitate behavior parameters of the complete boarding and alighting periods to realize the optimization of boarding and alighting.First of all,the research gains the video of passegners boarding and alighting at 6 bus stops including Jimingsi and Nengrenli,then the open-source movement target tracking,trajectory generation software and DLT algorithm are used to complete the extraction of bus passengers traffic flow characteristics.The detailed study has been carried on the speed characteristics,arrival characteristics and time characteristics of bus and passengers.Then,using Excel and Microsoft Visual Studio as the software platform,based on the original social force model,putting forward of several passengers algorithm to realize the purpose of avoiding the collision,the grid searching and pro domain vision occlusion implementation,the classic social force model is improved with coupling multi agent modeling methods.In the model,the quasi-simulated blocks are divided into the subject of the passenger and the subject of the scene which are modeled separately.Various parameters and rules such as size,generation,distribution and movement of the passenger and scene models are set.The model and visualization model of passenger flow simulation model are discussed,and the model visualization module is completed based on the EasyX graphics library,which simulates the complete process of the passenger boarding and alighting flows.Finally,the Zongtongfu bus stop and bus routes serve as a case,using the simulation model to simulate the flow of passengers,and from three aspects among the arrival rules and time rules of bus and passengers,the model were verified.Based on the model,the application of the model is introduced from the aspect of bus facility layout optimization.The results show that in the scenario of with part guardrail,the average passenger boarding time reduced by about 10.23%,and the average single passenger boarding time is reduced by 10.55%,the boarding efficiency were improved to some extent.