Models and Methods for Two-Echelon Location Routing Problem with Time Constraints in City Logistics

الملخص EN

This paper focuses on the two-echelon location routing problem with time constraints in city logistics system.

The aim is to define the structure of a system which can optimize the location and the number of two different kinds of logistics facilities as well as the related routes on each echelon.

A mathematic model considering the problem characteristics has been set up.

Based on probability selection principle, this paper first puts forward a metaheuristic algorithm with comprehensive consideration of time and space accessibility to solve it.

Then, random instances of different sizes are generated to verify the effectiveness of our method.