基于关键链法的项目群进度计划优化研究

发布时间：2018-11-07 11:41

【摘要】：近年来,在建设工程项目进度管理领域中,运用关键链法(Critical Chain Method,简称CCM)成为了研究热点。本文通过比较关键链法与传统进度计划制定方法,阐明了关键链法的内涵、理论依据和基本思想,明确了在项目群进度计划管理中应用关键链法的流程:首先确定资源约束条件下项目群中各个项目的优先级:本文构建了一套项目优先级评价指标体系,运用灰色关联分析确定项目群中各项目的优先级;然后根据优先级的评价结果,依次确定项目群中各个项目的关键链,主要依据关键路径法和ACTIM准则进行;最后根据项目中每个工序在项目关键路径中的位置权重系数、风险弹性系数来确定关键链上的项目缓冲区和非关键链上的汇入缓冲区的大小。通过以上分析,本文运用关键链对建筑项目群的进度计划进行了优化。在运用灰色关联分析对项目排序的基础上,确定了资源约束下的三个建筑项目的关键链,并确定了关键链上项目缓冲区和非关键链上汇入缓冲区的大小。通过实例验证得出:关键链法缩短了由三个项目组成项目群的工期,同时各项目的计划工期也大大缩减,保证了项目群进度计划优化目标的实现。本文的方法在企业优化配置和有效利用资源,按时保质保量兑现合同承诺,保证企业的经济利益,提高客户满意度的同时提升企业自身品牌价值等方面具有重要的实践意义。
[Abstract]:In recent years, in the field of construction project schedule management, (Critical Chain Method, (key chain method) has become a research hotspot. By comparing the key chain method with the traditional schedule planning method, this paper expounds the connotation, theoretical basis and basic idea of the key chain method. The process of applying the key chain method in the project group schedule management is clarified. Firstly, the priority of each project in the project group is determined under the condition of resource constraint. In this paper, a set of project priority evaluation index system is constructed. Using grey relational analysis to determine the priority of each item in the project group; Then, according to the evaluation results of priority, the key chain of each project in the project group is determined in turn, which is mainly based on the critical path method and ACTIM criterion. Finally, the size of the project buffer and the import buffer on the key chain are determined according to the position weight coefficient and the risk elasticity coefficient of each process in the key path of the project. Through the above analysis, this paper optimizes the progress plan of the construction project group by using the key chain. Based on the grey relational analysis, the key chains of three construction projects under resource constraints are determined, and the size of the project buffer and the import buffer on the critical chain are determined. It is concluded that the critical chain method shortens the duration of the project group composed of three projects, and the planned duration of each project is also greatly reduced, which ensures the realization of the optimization goal of the project group schedule plan. The method of this paper is of great practical significance in optimizing the allocation of resources, utilizing resources effectively, honouring the promise of contract on time, quality and quantity, ensuring the economic benefit of the enterprise, improving the customer satisfaction and promoting the brand value of the enterprise itself at the same time.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU722

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