关键词: 关键链, 多项目管理, 缓冲管理, 风险共担, 鼓缓冲

Abstract: In order to improve the efficiency of multi-project buffer management, a drum buffer sizing approach based on double risk-pooling of multi-project system is proposed. The new method analyzes the risk sharing at two management levels from a system perspective. Project buffers are hierarchically managed in terms of the proportion of the critical activities that fall on the two types of critical chain, and the abstracted project buffers are collected from the project level and further collected on the system level. On this basis, the drum buffer is quantitatively determined by considering the risk independence factor and the impact of drum activities on the system effective output. The simulation results show that the proposed method has better performance in multi-project on-time completion, average project buffer consumption, average delay of drum activity on the system critical chain, total multi-project duration and cost, thus improving the risk response capability of the multi-project system.

Key words: critical chain, multi-project management, buffer management, risk sharing, drum buffer