摘要
在工程项目进度控制中,关键线路上的工序数难以达到PERT对工序数足够大的要求,而二元区间网络又将工序时间参数处理成均匀分布区间数。为了克服这些缺陷,提出了三元区间网络,有效地克服了对关键线路工序数的要求,并且按照"中间大,两端小"的原则处理工序时间参数。通过对三元区间网络的理论分析,运用MATLAB编程,实现了此类网络求解的自动化。最后的实例分析表明:三元区间网络求解算法具有很强的可操作性和通用性,所得完工可能度能够很好地反映进度风险。
For the schedule control of construction projects,the number of working procedures cannot satisfy the infinite demand of PERT,while the procedure time parameters are processed into interval numbers with even distribution by dual interval network.In order to overcome the defects,the ternary interval network was proposed which effectively satisfies the network request of critical path process,and the procedure time parameters were processed according to the principle of small at both ends and big in the middle.Based on the theoretical analysis of the ternary interval network,automation solution was proposed by using MATLAB programming.The analysis of a practical case indicates that the ternary interval network algorithm has good operability and generality.The possible degree of completion can reflect the progress risk.
出处
《工程管理学报》
2011年第4期425-429,共5页
Journal of Engineering Management
基金
西安市社会科学规划项目重大课题(11J058)
关键词
三元区间数
进度控制
完工可能度
关键线路
ternary interval number
progress control
possible degree of completion
critical path
