基于演化博弈的重大工程业主与勘察机构合作机制

为研究重大工程前期勘察阶段业主与勘察机构的合作问题，以业主和勘察机构有限理性为前提，基于演化视角建立双方决策行为交互的博弈模型，探讨了参数变化对于演化稳定策略的影响，并用仿真实验的方法研究参数的取值与初始策略选择对于演化结果的影响。研究结果表明：合理的超额分配系数对促进双方合作有积极意义，且存在一个最优的系数使得双方合作的可能性最大；双方的成本对于均衡结果的影响呈现差异化的结果；风险分担机制的设计可有效促进合作。

Cooperation Mechanism Between the Owner and the Engineering Investigation Contractor in Mega Project Based on Evolutionary Game Theory

To study the cooperation mechanism between the owner and the engineering investigation contractor in the early stage survey of mega projects, and based on the premise of the bounded rationality of the owner and the engineering investigation contractor, an evolution model was established, based on which, the influence of a variety of parameters on evolution results was discussed, and verified by numerical simulations. It is found that a reasonable excess income distribution has a positive effect on the cooperation of both parties, and there exists an optimal coefficient that maximizes the possibility of the cooperation between the two parties. The influence of the cost of both parties on the equilibrium results is different, and the risk allocation mechanism can effectively promote cooperation.