Research Initiation: An Alternative Logic Scheduling Technique for Construction Operations

网络调度技术--如箭头图关键路径法(CPM)、优先图关键路径法(CPM)和绩效评估和审查技术(PERT)--被广泛地开发用于国防工业对其大型政府合同的控制。这些方法已经逐渐被建筑行业的一部分所采用，但它们并不符合一个好的调度系统应该满足的标准。这项研究的目标包括开发一种描述项目活动的硬逻辑和替代逻辑的建模方法，并开发调度模型的优化函数，以在不同的概率水平上最小化项目成本，以达到预定的完成日期。此外，设想的系统将需要一个目前尚不存在的唯一数据库。目标包括制定该数据库的规范和数据库支持的方法。

Network scheduling techniques--such as the arrow diagramming Critical Path Method (CPM), Precedence Diagramming CPM, and the Performance Evaluation and Review Technique (PERT)--were developed extensively for the defense industry for control of their large government contracts. These methods have gradually been adopted by a segment of the construction industry, but they do not fulfill the criteria which a good scheduling system should meet. The objectives of this research include the development of a modeling approach that depicts the hard logic and alternative logic for project activities and the development of optimization functions for the scheduling model to minimize project cost at various levels of probability in achieving the scheduled completion date. In addition, a system as envisioned would require a unique database which currently does not exist. An objective includes the development of a specification for this database and methodology for database support.