Research On The Adjustment Model Of The Concession Period And Price And Subsidy In Quasi-profit PPP Project

In recent years,with the acceleration of urbanization and the need of economic development,the demand of urban infrastructure increases rapidly.There is no longer realistic to merely rely on national finance,so the PPP model as an innovative financing channel was introduced into the infrastructure field.Government have promulgated a series of policies to vigorously promote the PPP mode,expecting to introducing of private funds,technology and other advantages,as well as improving the efficiency of construction and operation for public infrastructure project through the market-oriented operation.In view of this,the paper researches on the related problem of the income of Quasi-profit PPP project,to improve the scientific nature of income decision which is decided by the government department and the project company.The paper also aims to provide corresponding basis of adjustment to revenue based on the condition of interest equilibrium for stakeholders in the operation process of Quasi-profit PPP project.First of all,starting with the related basic theory of Quasi-profit PPP project and linkage adjustment among the concession period,concession price and government subsidies to further clarify the research object and research content.Based on the full understanding of the main features of the research subject,the research is more scientific and provides a theoretical basis and support for the subsequent research in the paper.Secondly,by identifying the related factors of income for the Quasi-profit PPP project,building a Quasi-profit PPP project income decision-making model on the basis of making a casual loop diagram in which the net present value is used as the income index.Taking the interests of the main project stakeholders includes government,item company and the public,namely the minimum government subsidies,maximum net present value and minimum concession price as income adjustment targets.This part provides the basis for the application of the following case.Thirdly,taking the actual case as the object to verify the linkage adjustment of the income in Quasi-profit PPP project.According to the actual situation in the case,the income is adjusted with a certain proportion of concession price,government subsidies and concession period.Then,the best scheme was selected through choosing which meets the multi-objective in maximum degree among these adjustment plans,at thesame time the operability and practicability of the model can be verified.In the end,The conclusion of this paper and the areas that need to be improved in the further research is proposed in order to provide reference for the income linkage adjustment.