Research On Collaborative Transportation Method Of Regional Rail Transit System Oriented To Overall Capacity Improvement

Collaborative transportation organization,as an important method to the operation of traffic trains and p assenger transportation organization in regional multi standard rail transit system,plays a vital role in improving the passenger transportation service quality,the efficiency of cross-standard passenger transportation organization and the overall capaci ty of the system.With the increasing types of rail transit systems and the expansion of network scale,the number of passengers in the region is growing,and the travel environment of passengers is also changing,resulting in a series of travel problems f or passengers,especially the great impact on the passenger’s cross standard transfer organization.Cross-standard passengers as an important component of passenger transportation in rail transit,will affect the overall transportation capacity of the syst em once their transportation process is affected.Therefore,this paper studies the impact of collaborative transportation organization on the overall capacity of the system,aiming to solve the problem of passenger transportation organization in regional multi standard rail transit system.The work of this article is as follows:Firstly,the research direction and significance of this study is according to the actual background of China’s regional rail transit organization,and the problems existing in the transportation organization methods will be pointed out and discussed in this paper.This paper analyses the shortcomings and defects in existing research from the overall transportation capacity of the system,the transportation organization,and the tra nsportation information service,then,puts forward the calculation models and improvement methods of the overall transportation capacity of the system under the collaborative transportation organization method.Secondly,from the perspective of improving the quality of passenger transportation service and the efficiency of passenger transportation organization,this paper analyzes the following factors that affect the overall capacity of the system,including: network planning and layout,the waiting time of single-standard passenger,the waiting time of cross-standard passenger transfer,the whole travel time of passengers,the information service and sharing of passenger transportation,and the operating cost of enterprises.Focusing on the establishment of train collaborative timetable and train collaborative operation scheme,this paper discusses the influence of collaborative transportation organization method on the factors that affect the dynamic overall capacity of the system,including: the influenc e of collaborative transportation organization method on passenger transportation service quality,and the influence on enterprise operation cost.Based on the above analysis,this article studies the influence of collaborative transportation organization method on the dynamic overall transportation capacity of the system,and then reveals the internal relationship between them.Thirdly,the overall transportation capacity of the system is an important indicator to reflect the degree of collaborative organi zation of various standard rail transit facilities and equipment,the efficiency of passenger collaborative transportation and the quality of passenger transportation service.Therefore,the calculation method and mathematical model of this capacity should reflect the dynamic change process and results of the overall transportation capacity of the system under the effect of collaborative transportation organization method.The static and dynamic calculation model of the overall transportation capacity of regional rail transit system proposed in this paper starts from the research of line(passenger travel OD between stations,station → station),which not only overcomes the defect of the traditional calculation model that the passenger travel data is about "point" data,but also can transform the influence of the collaborative transportation organization method on the overall transportation capacity of the system into quantitative calculation.Then,this paper proves that collaborative transportation organization optimization can improve the static overall transportation capacity of the system by mathematical derivation.In summary,this study constructs a dynamic model of overall transportation capacity of the system under the comprehensive influence of passeng er transportation service quality,network transportation capacity and enterprise operation cost of regional rail transit system,and determines the main parameters of the model by using data fitting function model based on field survey data.Fourthly,due to the relatively independent operation management and information transmission of multi standard rail transit system in the regional rail transit system,the convergence of train operation timetable between rail transit systems is poor,resulting in many cross-standard passenger transportation problems,which has a serious impact on the efficiency of system transportation and the overall transportation capacity of the system.Taking the line of urban rail transit transfer railway as an example,this study optimizes the timetable of urban rail transit system and railway system through the construction of single-standard passenger platform waiting time optimization model,cross-standard passenger transfer waiting time optimization model and enterprise train operation optimization model in the planned period,to reduce the waiting time of single-standard passenger,the waiting time of cross-standard passenger transfer,and enterprise operation cost.In order to study the influence of collaborative timetable on the dynamic overall transportation capacity of the system under different optimization objectives,the weight coefficients of the three optimization objectives are selected according to the research results of the existing literature.In terms of model so lving,because the problem is a typical NP-hard problem,an effective heuristic algorithm is used to solve it.Fifthly,in order to verify the practicability of the model and the effectiveness of the algorithm constructed in this article,the actual cases are analyzed.First,the box plots and standard deviation coefficients of all optimization results under different test scenarios are compared to test the stability of the heuristic algorithm.Then,the influence of collaborative timetable on the objective function,the influence of collaborative timetable on the dynamic overall transportation capacity of the system,and the sensitivity of the dynamic overall transportation capacity of the system are analyzed to study the comprehensive influence of collabor ative timetable on the dynamic overall transportation capacity of the system.The results can be used to guide the preparation of train operation timetable and effectively improve the dynamic overall transportation capacity of the system.In the research p rospects,the author and the research team will expand the network scale of the case study and collect more passenger space-time transportation demand data,further optimize the model and algorithm in this paper,so that it can be more effectively used to solve practical problems.