Research on the Evolutionary Game of Performance Assessment of Urban Underground Comprehensive Pipeline Gallery PPP Project

Aiming at the difficulty in designing the pay-for-performance mechanism of the PPP project of urban underground comprehensive pipeline gallery in the process of project operation in China, we establish a tripartite evolutionary game model and replicated dynamic equations starting from the project company of the PPP project of the urban underground comprehensive pipeline gallery, the relevant government regulatory departments, and the third-party performance appraisal organization. Mathematical methods are used to find out the 10 equilibrium points of the model, and MATLAB tools are used to numerically simulate the evolution process of the model, so as to analyze whether the changes of the relevant factors affecting the pay-for-performance mechanism intervene in the evolution results.