Research On Shore Resources Optimal Allocation Of Container Terminal With Indented Berths And Marginal Berths

The Indented Berths can also be called Dock-type Berths.By excavating to the land area,the original shoreline can be expanded to a longer shoreline to relieve the shortage of shoreline resources,and the quay cranes can be arranged on both sides of the berths to load and unload the established ships simultaneously,so as to improve the operation efficiency.The mixed berth layout with both Indented Berths and regular Marginal Berths has advancement and adaptability,because they can effectively relieve the shortage of shoreline resources and respond to the development trend of large-scale ships,and at the same time,they can meet the berthing needs of existing ships.In this paper,the research object is the container terminal with Indented Berths and Marginal Berths,the influences of the allocation of shore resources on port carbon emissions are considered.Aiming at the decision of berth allocation problem of mixed berth and joint allocation of berth and shore crane considering the carbon emissions,the main research contents are as follows.First of all,this paper analyzes the shore operation system of the mixed berth layout with Indented Berths and Marginal Berths.This paper expounds the differences between the Indented Berths and the Excavated-in Harbor Basin,defines the research object,analyzes the operation efficiency of the Indented Berths and the marginal berth and the complexity of the mixed berth system.Considering the influence of the resources allocation of the container port on carbon emission,this paper analyzes the carbon emission from water area and the land area of the port.Secondly,this paper studies the berth allocation problem of the mixed berths.Two kinds of allocation strategies of mixed berth are proposed: one is the Separate Strategy under which the efficient Indented Berths are only allocated to large ships,and the ordinary Marginal Berths only serves small ships;the other is the Integrated Strategy,which allows large or small ships to berth in any type of berths.Considering the shortest total time of all ships in port and the lowest customer dissatisfaction in a given decision cycle,a hybrid berth allocation optimization model is established under the Integrated Strategy,and the model constraint changes are studied according to the Separate Strategy.Based on Genetic Algorithm,the two-dimensional chromosome coding method is studied,and the algorithm to solve the model is designed.Then,an example is designed to solve the Berth Allocation Problem under the Integrated Strategy and the Separate Strategy.The results show that the Integrated Strategy is superior in reducing the waiting time and customer dissatisfaction.Finally,based on the Integrated Strategy of optimal allocation of mixed berths,the Multi-objective Joint Optimal Allocation of Berths and Quay Cranes under lowcarbon background is studied.In order to minimize the carbon emission of all ships in the process of sailing near the port and minimize the total time of all ships waiting for berthing and departure delay in the decision-making period,the joint allocation model with double objectives of berth and quay crane is established.The Nondominated Sorting Genetic Algorithm with Elite Strategy(NSGA-II)is designed by multi-dimensional chromosome coding method.An example is designed and the results show that the algorithm is effective.The problem of the Multi-objective Joint Optimal Allocation of Berths and Quay Cranes considering carbon emission can be solved effectively to get the optimal Pareto solutions,which provides a theoretical support for port decision-making.