Optimization Method Study for Capacity Coordination between Urban Rail Transit Lines

In this paper, it analyzed the variation of waiting passengers in transfer station platform, and a model was obtained to calculate the number of waiting passengers, the number of passengers who had got on trains and the remaining passengers in transfer sites when trains arrived and left the transfer station during the coordination period. In the model, the case that passengers could not board on the first arrival train they encountered was considered. Based on the calculation model, an optimization model was established. The optimization model took maximizing the total number of passengers that departed as the target during the coordination period in the transfer station, and took the maximum waiting passengers not exceeding the capacity of each site as the constraints. Using the calculation model and the optimization model, a case was analyzed under the condition that passengers transferred unevenly between two inter-lines. The research can provide a reference for urban railway network coordination.