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Dr. JianJun Wu: Multiperiod-based Timetable Optimization for Metro Transit Networks

Publish Date: 2018/09/28 08:38:54    Hits:

On September 26th,2018, in Room A716 of the New Main Building, Dr. JianJun Wu was invited to givea lecture entitled "Multiperiod-based Timetable Optimization for MetroTransit Networks". The lecture was hosted by Professor Qiong Tian. More than 20 audiences attended, including graduate and undergraduate students from School of Economics and Management and School of Transportation Science and Engineering, Beihang university.

This research tackles the train timetable optimization problem for metro transit networks (MTN) inorder to enhance the performance of transfer synchronization between differentrail lines. Train timetables of connecting lines are adjusted in such a waythat train arrivals at transfer stations can be well synchronized. This studyparticularly focuses on the timetable optimization problem in the transitional period (from peak to off-peak hours or vice versa) during which train headway changes and passenger travel demand varies significantly. A mixed integernonlinear programming model is proposed to generate an optimal train timetableand maximize the transfer synchronization events. Secondly, an efficient hybridoptimization algorithm based on the Particle Swarm Optimization and Simulated Annealing (PSO-SA) is designed to obtain near-optimal solutions in an efficientway. Meanwhile, in order to demonstrate the effectiveness of the proposedmethod, the results of numerical example solved by PSO-SA are compared with abranch-and-bound method and other heuristic algorithms. Finally, a real-worldcase study based on the Beijing metro network and travel demand is conducted tovalidate the proposed timetabling model. Computational results demonstrate the effectiveness of adjusting train timetables and the applicability of thedeveloped approach to real-world metro networks.

Wu Jianjun, Professor of Beijing Jiaotong University. He was selected for the National Outstanding Doctoral Dissertation and the New Century Excellent Talent Support Program of the Ministry of Education. Editor-in-Chief of the Journal of China Highway and editor of the Frontiers of Engineering Management. He has presided over severalnational and provincial-level projects such as the National Science Fund for Distinguished Young Scholars, the National Natural Science Foundation of China,and the National Natural Science Foundation of China. As a research backbone,he participated in two projects of the National 973 Program in the transportation field and the Innovation Research Group Project of the National Natural Science Foundation of China. Published two monographs. He was awarded the first prize of the Natural Science of the Ministry of Education and the third prize of the Beijing Science and Technology Award.