Studies On Sustainable Development Of City Logistics

City Logistics is the basis of existence and development of modern urban and plays an important role in the city’s economic development. City logistics, however, has significant external diseconomies of urban society and the environment which is the main reason of the environmental and social problems that caused many threats to urban living.Urban distribution is an important part of city logistics, and the studies on the urban distribution freight traffic problems and optimize of urban distribution in order to reduce the impact of urban social and environmental about urban logistics is core issues of studies on city logistics sustainable development.Domestic and foreign government departments take the restriction policies for the cargo vehicle which entries into the areas of city especially central city in order to reduce the urban environment pollution and traffic interference. This paper argues that the urban traffic control policy is one of the most important indicators of the city distribution optimization results. However, from the research literature reviews it can be founded that few researchers and enterprises take the urban traffic control policy as an important factor when optimizing the urban distribution, which makes urban distribution optimization problems are not well with the actual situation appropriate, and difficult to give the right guidance and reference for practice. At the same time, there is lack of attention and study on the combined effect and applicable environmental of traffic control policies which had been proposed to promote t for the purpose of urban distribution sustainable development. Domestic research is still in the blank.In this paper, starting from the building of urban the distribution sustainable development measures framework and elements, Game theory analysis of relationship between the participants and behavior within the urban distribution sustainable development measures has been taken, model of Distribution multi-objective optimization under the conditions of the urban traffic control policies has been make, and the results of distribution optimization urban different contexts and policy-sensitive comparative has been evaluated, On which basis, the joint distribution under the urban traffic control policies has been studied. Finally, there is an empirical study. Specifically, the mainly work of this paper as following:1、the framework and system elements analysis of distribution route optimization problem under the conditions of urban traffic control policies Based on grounded theory, throug the collection of a lot of documents and data, the system Framework for urban the distribution sustainable development measures has been made, with which system architecture and elements of distribution routing optimization problem under the conditions of the urban traffic control policies has been analysised;2、Analysis the relationship between the participants and behavior within the urban distribution sustainable development measures based on the game theory Through the analysis of relationship between the participants and behavior within the urban distribution sustainable development measures, it has been found that the capacity of corporate response to cost incremental of implementation of the urban the distribution sustainable development measures is limited under the market mechanism absolutely, Government intervention is effective supplement of inadequate market forces, which make the allocation of resources of the urban distribution logistics optimal more reasonable. Therefore, the urban distribution sustainable development measures can not rely solely on market forces, the government should play a greater role;3、city distribution path multi-objective optimization under the conditions of urban traffic control policies Making the urban traffic control as an important factor in urban distribution optimization, one urban distribution multi-objective optimization model has been built. Through scenarios designed, the combined effect of distribution optimization under different cities traffic control policies has been analyzed. On this basis, the analysis of elements of the urban distribution sensitivity to urban traffic control policies has been made.4、the studies on joint distribution under the conditions of urban traffic control policies Making joint distribution model of the integrated urban distribution and backhaul pickup as the study object, one optimization model of the joint distribution under the traffic control conditions has been built. The paper proposed a longitudinal joint distribution mode based on the "ex-factory price strategy" can improve the urban distribution vehicle utilization,and reduce environmental pollution and distribution costs,which can better solve the problem of low utilization caused by urban traffic control policies, and the overall efficiency of the optimization of city distribution has been achieved.5、case study Making a distribution center in Beijing as the study object, practive study of the actual distribution path and distribution costs has been made. The optimization model and conclusions of this paper has been simulated and verificated with date from practive survey. Finally the comparation between the results of actual and computer distribution ptimization has been analysised, and recommendations have been given.