Dynamic evolutionary game and efficiency improvement of green supply chain based on multi-party information sharing
Authors: Zhang Junling , Geng Liyan , Shi Xiangjiao 
Published: August 2023

Abstract
With the rapid development of the construction industry, the trend of construction industrialization is becoming more and more obvious. The competition among construction supply chains gradually replaces the competition among construction enterprises. Previous studies have shown that the information sharing behavior among participating entities in the supply chain is one of the key factors affecting supply chain competition. Based on evolutionary game theory, this paper constructs a tripartite information sharing game model for owners, general contractors, and subcontractors under the assumption that all parties involved in the supply chain can obtain relevant benefits but also bear the sharing costs and risks. The model is simulated using Matlab software. By constructing and analyzing the model, as well as conducting simulations, the aim is to study and determine the specific impact of changes in benefits and costs related to information sharing among all parties in the supply chain on the dynamic evolution process of the tripartite evolutionary game system, and to identify the key factors that affect the stable operation of the supply chain, in order to take effective measures to strengthen the stability of the supply chain and enhance its overall competitiveness. Research has found that an increase in the amount of information sharing, the coefficient of collaborative benefits, and the coefficient of collaborative effects in the game model will lead to an earlier time for the three parties to reach a relatively stable state during the evolution process, while an increase in the cost of information sharing and the risk coefficient of information sharing will delay the time for the three parties to reach a relatively stable state during the evolution process. This indicates that the more sufficient information sharing among all parties in the supply chain and the more benefits obtained from implementing information sharing are more conducive to improving the overall stability and competitiveness of the supply chain. However, the increased cost burden and risk losses faced by implementing information sharing are not conducive to the overall stability of the supply chain, thereby reducing its competitiveness. The benefits and costs related to implementing information sharing are key factors that affect the overall stability of the supply chain. In addition, the study also found that when all parties in the game adopt information sharing, both the sum of the three parties' profits and their respective profits are better than when all three parties adopt information non sharing, which proves that good information sharing behavior is an effective way to improve the overall competitiveness of the construction supply chain. This paper analyzes and identifies the key factors that affect the stable operation of the supply chain through research, and concludes that information sharing can effectively enhance the overall competitiveness of the supply chain. Based on this, countermeasures and suggestions are proposed to enhance the stability and competitiveness of the construction supply chain. It can be believed that the research conclusions can provide good guidance and reference for the decision-making of participating enterprises and supply chain management departments in the construction supply chain.