Train Routing Scheme Compilation Method Of Urban Rail Transit

Research on train routing scheme as transport plan of urban rail transit system, could optimize resource allocation and improve level of service of urban rail transit. Current train routing scheme compilation of urban rail transit in China mainly relies on experience of planning workers, engineering workers and operation workers, and lacks relevant theoretical foundation; train routing scheme compilation of line is commoner than one of network; research on anti-interference ability of train routing scheme is still exploration stage. So this paper mainly includes the following five parts:(1) Train routing scheme influencing factors of urban rail transit is systematically analyzed. Influencing factors of train routing scheme from the perspective of flow spatial distribution characteristics, flow temporal distribution characteristics, passenger trip demand, running condition and resource are analyzed. Compilation frame of train routing scheme is proposed and provides research ideas of urban rail transit train routing scheme compilation.(2) Calculation equations of maximum assembling passenger on platform and train passenger loads under single routing and two routings are given, for urban rail transit straight line its up or down trains using the same platform for each station. After analyzing activity time and change trend of passenger flow for time element, calculation frame of maximum assembling on platform and train passenger loads are concluded, and calculation equations attained by executing calculation frame provide foundation for maximum assembling ratios on platform and train passenger loads ratios.(3) Combinatorial compilation method of train routing scheme and timetable under single routing and two routings is proposed, for urban rail transit straight line its up or down trains using the same platform for each station. Based on train routing scheme influencing factors and benefit of passenger and operation unit, combinatorial compilation model is proposed and implicit enumeration analysis algorithm is designed.The numerical example indicates that the model and the algorithm is feasible and effective, and the combinatorial compilation method could decrease total cost significantly:one of optimal solution respect to7-19feasible solutions decreasing least by6.67%and most by25.77%, one of optimal solution respect to21-47feasible solutions decreasing least by1.94%and most by14.05%. The combinatorial compilation method could also afford combinatorial compilation method of train routing scheme and timetable for Y type or ring type line some lessons.(4) Compilation method of train routing scheme for disconnected urban rail transit network is proposed. Based on train routing scheme influencing factors and operation network system optimization, the bilevel programming model to compile network train routing scheme is proposed and genetic simulated annealing algorithm is designed.The numerical example indicates that the model and the algorithm is feasible and effective, and the compilation method could decrease total cost significantly:one of optimal solution respect to worst feasible solution being single routings decreasing by8.44%. The compilation method could also afford compilation method of train routing scheme for connected urban rail transit network some lessons.(5) Train routing scheme operation invulnerability of urban rail transit is discussed. Under the assumption of child network without some a station or route and its affect range, nine indices of urban rail transit are proposed by stochastic user equilibrium theory, to quantitatively analyze train routing scheme operation invulnerability from the perspective of passenger flow, time and all the time of passenger flow. The numerical example indicates that the train routing scheme operation invulnerability research is feasible and effective, and network train routing scheme operation invulnerability indice value range of losting station is much greater than one of losting route. Train routing scheme operation invulnerability of urban rail transit could provide theory foundation for anti-interference ability of train routing scheme.