ABSTRACT
Schedule, quality and cost are three key goals in construction project management. As everyone knows, quality and cost are largely determined by schedule of a project. So, how to define the schedule of a project has become a very important and popular issue in construction project management. Generally speaking, there have been some important methods to define the schedule of a project such as CPM, PERT, GERT, VERT, SCERT, ID and some improvements in themselves. For example, someone combined fuzzy with CPM in order to get better results on schedule control [1]. Some one used fuzzy to make sure the probability instead of traditional triangular distribution [2]. As the development and application of computer technology, large-scale calculation became a reality gradually. Simulation and Monte Carlo by computer became more and more popular on this issue [3]. Monte Carlo simulation was a very good way to solve uncertain problem especially the problem such as construction schedule management [4]. The theoretical basis of Monte Carlo was law of large numbers and the central-limit theorem, the practice method of it was repeated sampling and high-speed computation. GERT was a good method to solve the problem such as quite uncertain. For example, when you don’t know the relationships and time parameters of all works, GERT will be a better choice for you [5∼6]. VERT
(Venture Evaluation and ReviewTechniques) was used on problem of defining the risk and venture. SCERT (Synergistic Contingency Evaluation and Response Techniques) was a method to solve the problem of evaluation on uncertain [7].
