Research On The Orderly Degree Of Container Terminal Handling System Based On Structural Entropy

As a complex engineering system,the planning and design of container terminal mainly relies on design specifications,historical data,expert experience,and no more scientific theoretical support and mature engineering calculation tools.When the number of container terminal design schemes is to large,the modeling cost of system simulation technology with better analysis effect is too much and the optimization is limited.In short,the planning and design and operation management of terminal are relatively extensive and not precise enough.Therefore,based on the dissipative structure theory of complex systems,researched the evolution rule of container terminal handling system,analyzed the uncertainty of various types of container terminals from a multi-dimensional perspective,proposed a quantitative evaluation method based on entropy theory,comprehensively evaluated the orderly level of loading and unloading operations from the timeliness and accuracy of the internal information transfer of the handling system,and verified the effectiveness of the evaluation model.The main research results are as follows:(1)This thesis thoroughly analyzed the uncertainty of the internal structure of the container terminal handling system,and traced back the structural evolution process of the container terminal handling system,then explored the impact of uncertainty changes on the system during the evolution process,finally researched the relationship among the uncertainties of system,dissipative structure and entropy.This thesis proposed: the judgment basis of the evolution of container terminal handling system is entropy,the evolution process of the system is the process of entropy reduction,which lays a foundation for the quantitative evaluation of handling system.(2)According to the structural entropy theory and the actual situation of the production operation of the container terminal handling system,the orderly evaluation model of organizational structure and loading and unloading operation flow based on the structure entropy theory are constructed respectively,and the orderly evaluation of the layout structure based on the network structure entropy theory is constructed.The model comprehensively evaluates the orderly and stable operation of the handling system from the macro to the micro level.(3)Combined with the actual case of traditional container terminal and new automatic container terminal,this thesis calculated the structural entropy evaluation model is applied to analyze the container terminals of two different loading and unloading processes,and the orderly degree of organization structure,layout structure and structure of the loading and unloading operations,which comprehensively evaluates the stable and orderly operation of the handling system from a multidimensional perspective.(4)According to the system composition,organization structure,layout,loading and unloading process of the actual case of the traditional and new automated container terminals,the logic flow is constructed and a simulation test platform is established,the pressurization test has been completed and the test data has been analyzed.It is concluded that the new automatic terminal runs more stable and orderly,the validity of the order evaluation model is verified.Based on the dissipative structure and entropy theory,this thesis proposed an order evaluation model for container terminal handling system,and verified the effectiveness of the evaluation model through simulation experiments.The evaluation model can provide reference for container terminal planning and design and future automated terminal development,and has important academic and engineering significance.