Research On The Logistics Network Structure Of Beijing-Tianjin-Hebei Urban Agglomeration Under The Background Of Regional Integration

As the acceleration of economic globalization,regional integration is becoming more and more obvious.Urban agglomeration has gradually become a new regional unit of national participation in global competition and international division of labor.To promote the coordinated development of Jing-Jin-Ji as a major national strategy has been written to "13th Five-Year" plan.In the background of the integration of Jing-Jin-Ji,the integration of logistics has become an important part of regional logistics and economic development.Logistics integration plays a role of bridge and link in the process of regional integration,and convenient and efficient logistics network is an important driving force for the integration of regional logistics.Jing-Jin-Ji urban agglomeration is located at the center of Bohai economic circle.It has a unique location advantage and the transportation infrastructure is also maturing.However,the lack of unified logistics network planning leads to the increase of logistics cost,and the phenomenon of idle and waste of urban logistics resources.Therefore,the study of the structural characteristics of the logistics network of Jing-Jin-Ji urban agglomeration and the construction of a scientific and reasonable logistics network will help the development of the logistics integration in Jing-Jin-Ji.This paper tries to combine logistics and sociology to study the logistics network structure of urban agglomeration from the perspective of sociology.The paper analyzes the logistics network structure of Jing-Jin-Ji urban agglomeration from the point of "point-line-surface".Firstly,build the index system of comprehensive strength of urban agglomeration logistics scientifically and rationally.It is mainly from five aspects:transportation infrastructure construction,informatization level,logistics manpower level,urban economic development level and logistics demand situation.By using factor analysis method,the paper calculated the score of logistics comprehensive strength of each city in Jing-Jin-Ji,and analyzed the central cities of Beijing,Tianjin,Shijiazhuang and Tangshan.Secondly,a modified urban logistics gravity model is established to measure the gravity intensity of urban logistics.The gravitational matrix of urban logistics is imported into UCINET software.The social network analysis method is used to analyze the node,line and whole network of the logistics network structure of Jing-Jin-Ji urban agglomeration.The results show that the overall density of theUrban Agglomeration Logistics Network in Beijing,Tianjin and Hebei is large,but the logistics links are concentrated in some major cities,and there are obvious disequilibrium characteristics.Though the interconnections between subgroups are not close enough,the logistics collaborative development pattern formed by Beijing,Tianjin,Shijiazhuang,Tangshan and other axis cities has been gradually formed,and are playing the synergistic effect of network.Finally,based on the hub and spoke theory and research results,we constructed the logistics network of Jing-Jin-Ji urban agglomeration,and put forward suggestions to improve the logistics network,so as to promote the coordinated development of Jing-Jin-Ji.