| Logistics hub as the key node of regional integrated transport system is an attractiveplace for any mode of transport facilities and goods, is also the area of internal and externalmain goods transit area, having a strong appeal to radiation effect for the surrounding area,and occupying very important position in regional logistics system. But in the currentconstruction process of integrated transport system, the construction of the logistics hub isrelative lag, the less effective connection between the various modes of transportation,become the main bottleneck of restricting the area logistics efficiency and the benefit. In theprocess of planning and construction of Logistics hub system appears serious problem, suchas lag, the blind, and go in for grandiose projects, the reason is mainly on unclearunderstanding the evolution and development of logistics hub system stage, and failed toaccurately grasp the adaptability of relations between the logistics hub, transport corridor,traffic network and the economic development of regional social. Also, due to the explosivegrowth of the area logistics quantity, many areas large-scale construct logistics hub facilitiesare based on the simple traffic demand "determinism", and never really reflect on the logisticshub carrying capacity. To give full play to the efficiency of logistics hub, the premise is thathaving accurate cognition and measure for the carrying capacity of logistics hub under theresources and environment constraint conditions; as well as discover and improve the weaklink of logistics hub, protect the important node and logistics hub line, optimize the structureof logistics hub, to avoid the effects of internal and external disturbance factors led to thedecrease of the system capacity and even collapse phenomenon. In conclusion, from themacro level of regional logistics network system and the micro level of logistics hub, and onthe bases of the analysis of the logistics hub system structure, function and radiation effect,the paper in-depth study the internal evolution mechanism and carrying capacity of thelogistics hub system with the complex system theory, the regional logistics, and thetransportation planning related theory. The main purpose of the study is that perfect thefunction of logistics hub, optimize the structure of logistics hub according to the logistics hubsystem evolution rule, and under the condition of resource constraints, improve logistics hubcarrying capacity, and prevent the vulnerability of logistics hub, ultimately realize the sustainable development of the logistics hub.Firstly, on the basis of the discrimination of the concept of logistics hub and the hub, thepaper expounds the connotation of logistics hub and system characteristics, indicates thelogistics hub structure and functional orientation, analyzes the forming reason and process oflogistics hub, and studying the scope of logistics hub radiation and the radiation effect,confirm the openness of the system; then interpret the dissipative structure characteristic ofthe logistics hub and the internal evolution mechanism based on the complex system theory,analyzes the evolution mechanism and evolution conditions of the logistics hub system, setup the logistics hub evolution model, summarizes the development stage and thecharacteristics of the logistics hub evolution process, and leads to the logistics hub carryingcapacity research according to the logistics hub evolution threshold; On this basis of, on onehand, based on combing the concept of carrying capacity and related theory, defining theconcept of carrying capacity of logistics hub, analysis the characteristics of the carryingcapacity of logistics hub, build the structure model of logistics hub carrying capacity, and usethe state space method for description the logistics hub load state; on the other hand, based onfeatures of complex network system, on this basis of the concept model of the logistics hubinfrastructure carrying capacity, converting the logistics hub carrying capacity to hub micronetwork system carrying capacity of network capacity, constructs the network capacity modelof logistics hub carrying capacity under multiple constraints.Thesis research can effectively promote the development of the theory of logistics hub,at the same time, has a certain guiding significance for perfection the regional comprehensivetransportation system, and formulation scientific and rational development strategy oflogistics hub. Compared with the existing research, the innovation of this paper mainly showsin the following aspects:⑴Based on the dissipative structure theory, the paper has analyzed the evolutionmechanism of logistics hub system, and constructed the logistics hub system evolution modeland logistics hub system evolution model with the hub logistics quantity as order parameter,and put forward the evolution path of logistics hub and stage of development.⑵Combining the concept of carrying capacity and logistics hub, the structure model oflogistics hub carrying capacity and the conceptual model of logistics hub carrying capacity with state space method has constructed. From the perspective of hub micro network,Quantitative research is carried out on carrying capacity of logistics hub infrastructure andconstructed the network capacity model for logistics hub carrying capacity under multipleconstraints.⑶Study the structure of logistics hub vulnerability, constructed based on the efficiencystructural the vulnerability assessment model of logistics hub structure to determine thelogistics hub vulnerability, and put forward the prevention and control mechanism of logisticshub vulnerability. |
PDF Full Text Request