关键词: 重复性项目, 平衡线法, 关键工序, 资源均衡

Abstract: Resource leveling is a classic scheduling problem in repetitive projects. This paper presents a method of resource leveling for repetitive projects in line of balance (line of balance, LOB). Firstly, it proposes a method to determine the critical path in LOB, and determines the critical path and critical activities types. Then, it analyzes the determinants of the project duration, and studies the characteristics of different types of critical activities, and the relationship between the total duration and resource adjustment. It proves that due to the existence of special activities, namely, the backward critical activity and the point critical activity, resource optimization can be achieved by adjusting critical activities and non-critical activities simultaneously under the premise of ensuring the project duration. According to this idea, the paper designs the genetic algorithm for resource leveling in LOB. Finally, an illustrative pipeline project is used to demonstrates the optimization performance of resource leveling model. The resource leveling ideas and algorithms proposed in the paper can help project planners to expand the resource optimization space and achieve better resource leveling effect.

Key words: repetitive project, line of balance, critical activity, resource leveling