THE METHOD OF DYNAMIC ANALYSIS FOR EXTERNAL CHASSIS AT CONTAINER TERMINAL FOR DIGITAL TWIN

Abstract

 With the growing interest in digital transformation (DX) of ports and harbors, the introduction of digital twins (DT) has been attracting attention in the field of external chassis (external C/Y) at container terminals. For making more accurate DT models, it is necessary to understand and reflect on the detailed dynamics of external C/Y. However, it is difficult to obtain detailed information about external C/Y such as the travel route and waiting time from gate to loading or unloading operation and the congestion in front of the gate from only the cargo handling records and gate reception records stored in the terminal. In this paper, we investigate a method of analyzing the dynamics of external C/Y behind and inside the container terminals (CT) by using GPS devices. In the analysis of the hinterland of the CT area, we obtained detailed travel routes, distances, and times, including the origin and destination of the hinterland of CT area transportation. Furthermore, the analysis of inside CT could visualize the detailed operational route of external C/Y in CT and the arrival/departure time of each defined area. Then, it revealed that more than 40% of total staying time occurred at the stagnation area and the roads in front of the gate, which is the big problem in terms of efficiency and decarbonization of CT. The accumulation of such data is expected not only to clarify the current issues of CT but also to lead to the mitigation of uncertainty in arrival time for external C/Y, improved cargo handling efficiency, and the construction of more accurate DT models of CT.