网络化条件下城际铁路列车开行方案分层优化

Under the background of network conditions, the generation and optimization of intercity railway train operation scheme is a huge system engineering with many factors involved and its complexity changes exponentially. In order to quickly generate and optimize intercity railway train operation scheme under network conditions, the concept of node importance is combined with the generation and optimization of intercity railway train operation scheme. A optimization model of intercity railway train operation scheme is established to maximize the benefit of railway transportation enterprises and the proportion of direct passenger flow, and minimize the total travel cost of passengers. In the meantime, as the multi-objective and multi-constraint programming problem is difficult to be solved directly, the hierarchical solution method is used to generate the optimal scheme.