基于博弈理论的PPP公共服务项目合谋问题分析——以供水项目为例

Collusion of PPP public service projects based on game theory: Example of water supply projects

基于信息不对称,以及PPP公共服务项目中政府身份的多重属性,结合项目实施流程的不同阶段,讨论政府监管机构和项目公司之间合谋的可能性。然后,以供水项目为例,在对政府部门和社会资本之间的行为做出合理假设的前提下,构建政府主管部门、项目监管机构和项目公司之间的博弈模型,分析影响合谋行为的主要因素,提出设立多方参与的监管机构和建立社会资本采购阶段的竞争机制等合谋防范措施。

Based on information asymmetry and multiple identities of government in PPP public service projects,the possible collusion between government regulators and the project company is discussed considering different stages of the project implementation process. Under the premise of making reasonable assumptions on the behavior between government department and private capital in a water supply project, a game model among government department in charge,regulatory body and the project company is established. The main factors for the collusion are analyzed. Some precautions are proposed,including establishment of multi-stakeholder regulatory bodies and creation of competitive mechanism in procurement phase of social capital.