基于建设项目多目标综合优化的关键链缓冲区研究

Multi-objective comprehensive optimization research on critical chain bufferin! construction project

关键链技术中工序工期的估计以及缓冲区大小的合理确定和设置是诸多学者较集中探讨的问题.本文首先定量化分析质量、成本、安全因素与工期之间的关系,以此为基础,确定工序活动的安全时间并设置缓冲区,实例证明该方法确定的工期不仅短于常规网络计划求得的工期,而且综合考虑了工程项目管理中的诸多因素与目标要求,故在能较好的符合工程实际的同时,达到项目多目标的综合优化.

The scheduling estimation and reasonable determination of the buffer duration in critical chain technique is a problem which has been discussed among experts in this respect. Firstly, qualitative analysis on the relationship between quality/cost/safety and schedule, and then the methods such as linear and nonlinear function were used to quantify these relationships based on relative literature review. Following this, the safety time of processes, together with the buffer have been quantified. In the end, the method created in this article proved useful not only in shortening the schedule com- pared with normal network planning, but also it has taken the critical factor and different objective demands into account to well fulfill the practical use and get a comprehensive optimization.