基于关键链的发电设计项目进度优化
Optimization of Scheduling in Power Generation Engineering Projects Based on Critical Chain
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摘要:
发电工程设计企业主要基于关键路径法编制进度计划，基于赢得值原理进行进度控制，这种方法在设计企业资源充足的情况下，有效地优化了进度计划，进度控制取得了很好的效果。但随着市场环境的变化，原先的管理模式已不能满足现实需求。本文以案例研究的方式对基于关键链的发电设计项目进度优化进行了研究。在单一项目管理时，考虑了人们行为效应，将传统工期估计中的安全时间汇聚为缓冲，在不改变计划总工期的情况下，仍然提高了按时完成的概率。在多项目管理时，采用基于层次分析法的模糊综合评价处理多项目优先级问题，统筹分配能力约束资源，使企业内所有项目的进度计划得到总体的优化。 Abstract:Engineering enterprises in China mainly develop project schedule based on the Critical Path Method (CPM), and control the schedule based on the Earned Value Concept (EVC). This Method is effective without resource limit, but the old project management mode cannot meet the market and the needs of the development of the enterprise any more. This paper mainly research time management of power generation engineering projects based on Critical Chain with case study. On single project management, considering the effect of human behavior, the trisection shear method is adopted to estimate the construction period and set up the buffer. The safety time of estimating with the traditional method is summed up to a buffer, which increases the probability of finish on time without reducing the total duration. On multi-project management, this paper uses the fuzzy comprehensive evaluation based on analytic hierarchy process to deal with priority levels. Then it allocates constraint resources of capacity as a whole, which optimizes all the project schedules in the same enterprise.
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