Abstract: The classical buffer management methods only consider the sensitivity of activities to project duration. However, the impact of cost on the project is also very important, and these two factors have different impacts on different projects. In this paper, the sensitivity of activity to cost is considered for the first time, and the comprehensive sensitivity coefficient of activity to duration and cost is determined, based on which, the project buffer is allocated according to the comprehensive sensitivity and the duration of activity, which makes the allocation of buffer more reasonable. Then, according to the comprehensive sensitivity of activities, activities are divided into high, general and low sensitivity activities, so that the monitoring focus of the project can be more effectively determined. After that, monitoring trigger points are set respectively, and buffer consumption is monitored dynamically. Finally, Matlab simulation is used to verify the optimization results, in combination with a practical case. The experimental results show that the proposed method makes buffer utilization more efficient and monitoring focus clearer, which can achieve the dual goals of duration reduction and cost saving.

Key words: project management, critical chain, comprehensive activity sensitivity, dynamic monitoring, buffer allocation

摘要： 经典缓冲管理方法只考虑了活动对工期的敏感性，而成本对项目的影响也至关重要，而且两者对不同项目的影响也各不相同。考虑活动对成本的敏感性，确定出活动对时间和成本的综合敏感性系数，在此基础上，根据活动对成本和时间的综合敏感性和活动持续时间，将项目缓冲进行分配，使得缓冲的分配更加合理。根据综合活动敏感性将活动分为高、一般以及低敏感性活动，从而能够更加有效地确定项目的监控重点。分别设置监控触发点，对缓冲消耗实行动态监控。最后，结合案例，采用Matlab仿真模拟验证优化结果。实验结果表明，该方法使缓冲利用更加高效，突出监控重点，能够实现成本降低和工期缩短的双重目标。

关键词: 项目管理, 关键链, 综合活动敏感性, 动态监控, 缓冲分配