PPP高速公路项目合作双方投资比例与特许经营期决策

Decision-Making on the Partners' Investment Ratio and Concession Term of PPP Highway Project

为了确定PPP高速公路公私合作双方的合理投资比例以及私营投资者的特许经营期,通过比较PPP高速公路项目交通量饱和期和特许经营期两个时点大小,构建了两组公私合作双方投资比例与特许经营期的决策模型。运用此决策模型获得了合作双方的最佳投资比例与特许经营期,实现了政府部门的社会效益最大化和私人投资者的个人收益最大化。并引入算例对构建的决策模型进行了实际应用,充分验证了模型的有效性。

The problem of determining the public-private investment ratio of public-private partnership （PPP） highway and the concession term of private investor is discussed in this paper. By comparing PPP highway project traffic saturation stage with the concession term, two models of decision-making on the investment ratio of government and private investors and the concession term are built. With the models, the optimal investment ratio and concession term are obtained, and the maximal social benefit of government departments and benefit of private investor are achieved. At last, an example is used to validate the effectiveness of the decision-making model.