关键词: 重大工程, 永临结合, 投资模式, 仿真分析

Abstract: Permanent-temporary integration (PTI) in megaprojects refers to the design concept of integrating permanent facilities for the operation phase with temporary facilities for the construction phase. This approach not only avoids resource waste caused by dismantling temporary facilities but also promotes infrastructure construction that benefits the public. However, coordinating the interests of participating stakeholders remains challenging, highlighting the need for management mechanisms that encourage multi-stakeholder collaboration. Drawing on evolutionary game theory, this paper develops a multi-stakeholder decision-making game model involving local governments, project owners, and contractors. The model analyzes the evolutionary process of stakeholders’ decision-making behaviors regarding permanent-temporary integration, along with key influencing factors. The results indicate that stable cooperation can form among local governments, owners, and contractors, with local governments’ strategic choices being critical to achieving equilibrium. Livelihood-oriented PTI projects are better suited to a “cooperative” investment model, while strategic projects are more appropriate for a “dominant” investment model. Furthermore, unreasonable allocation of investment proportions may lead to conflicts between local governments and project owners, while real-time supervision of contractors’ construction quality proves to be an effective measure for promoting stakeholder participation.

Key words: megaprojects, permanent-temporary integration (PTI), investment models, simulation analysis