題  目😽：多車型高速公路BOT項目的最佳路徑選址和結合距離的最優收費

演講人：孟強  新加坡國立大學教授

主持人：鎮璐  意昂2教授

時  間：2016年7月11日（周一）下午3:00

地  點🐚：意昂2官网467室

主辦單位：意昂2、意昂2青年教師聯誼會

演講內容簡介：

Private provision of the highways through the build-operate-transfer (BOT) scheme has become one of the effective ways to expand the city-to-city transportation networks in many countries. This study deals with the practical planning problem regarding how to determine the route location and toll charges of multi-type vehicles for a new BOT highway in a city-to-city transportation network. A nice formulation based on the binary decision variables is presented to express a feasible BOT rout by making use of the Miller-Trucker-Zemlin (MTZ) technique proposed for the travelling salesman problem. Besides, a uniform distance-based toll charge scheme is selected on this BOT route with multi-type vehicles by assuming that the unit toll charges take the discrete values.

Based on the above problem settings, a bi-level programming model is developed for the proposed problem, where the upper-level model aims to maximize the social network welfare with the project profit constraints while the lower-level model is a conventional multiple-vehicle-type user equilibrium (MUE) problem.  A tailed Branch and Cut (BC) relaxation based algorithm are designed for solving the bi-level programming model. In this algorithm, the bi-level programming model is firstly relaxed to a single objective convex programing model by utilizing the tightest convex lower bound of for the bilinear functions, and it is further related to a mixed integer linear programming model. It can be demonstrated that the global optimal solution of the bi-level programming model is guaranteed when the lower bound of the network social welfare of the unexplored solution is not less than the network social welfare of a known MUE solution. Finally, two numerical examples are conducted to assess the efficiency of the models and algorithm proposed by this study.

演講人簡介：

新加坡國立大學土木工程系教授(終身教授)

香港科技大學博士;

研究領域包括: 交通網絡建模與優化、貨運交通和物流網絡分析、交通設施計量風險評估等領域，近年來在航海運輸線路優化等新興學術方向也走到全世界的前沿。在交通和航海運輸線路優化領域的國際頂級期刊發表學術論文130多篇，部分研究成果已成功應用於交通和航海工業中🦟。現任國際著名期刊Transportation Research Part B, Journal of Transportation Engineering (ASCE) and Transportation Research Part E副主編🟫🍤。

歡迎廣大師生參加🧑🏽‍🏭！