关键词: 水路运输, 物流系统构建, 系统仿真, 港口群, 共享平台

Abstract: In order to solve the problem of structural berth resource excess in port groups in adjacent regions, a new type of port and shipping logistics information system for ship carriers, cargo owners, and ports is built based on the sharing of berth resources in the port group. By introducing the queuing theory and stochastic process theory, a simulation model is established, which includes the building of trunk and branch route network of the port group (by a space-time allocation model), hinterland cargo flow allocation, and ship docking port selection (in a bi-level programming model). The simulation model is solved by using the designed spatio-temporal network analysis method and the two-level iterative algorithm with double threshold values. The sensitivity of model parameters is verified, and a specific example is analyzed. Simulation results show that changes in the observation period, hinterland cargo arrival frequency, and trunk/branch line pass- ability thresholds affect the route network structure within the port cluster by influencing the number of cargo arrivals or trunk/branch line opening conditions. Changes in vessel arrival frequency affect the transport capacity of the port cluster. Changes in berth sharing waiting time and sharing cost thresholds determine whether sharing can be achieved. When sharing is achieved through the logistics information system, the total berthing time and logistics costs of 3 trunk routes and 1 feeder route in the port cluster, observed in four periods, are 23% and 16.4% lower than those without sharing.

Key words: waterway transportation, logistics system construction, system simulation, port group, sharing platform