关键词: 关键链, 多项目管理, 能力约束缓冲, 分散设置

Abstract: To reduce the impact of uncertain factors in multiple projects and determine a more reasonable multi-project scheduling plan,a decentralized capacity constraint buffer sizing model based on the relevance between drum activities was proposed.Considering the characteristics and interrelationship of drum activities,the size of capacity constraint buffer was calculated based on the gray relational relative closeness determined by gray TOPSIS method,then it was distributed combined with the safety time.The decentralized buffer size was adjusted in turn based on the interval between drum activities,and then the buffer size after each drum activity was obtained.The project group was simulated by MATLAB.The simulation results showed that the proposed method could provide sufficient staggered time between projects with a smaller buffer and shorten the planned duration while ensuring the on-time completion rate of project group by comparing with classical capacity constraint buffer setting methods.

Key words: critical chain, multi-project management, capacity constraint buffer, decentralized setting