Study On Construction Project Time Management

Traditional project management mainly originated from the construction industry. Today, project management has been widely used in aerospace, defense, construction, IT, manufacturing, finance, insurance and so on all walks of life.Project Time Management, also known as project management or project schedule progress management is to ensure timely completion of the project carried out a series of management activities and processes. Project time management is an important part of project management, is a key factor in project success.In our construction project management, project schedule for most is using a Gantt chart and the Critical Path Method (CPM). But the traditional method of project management (CPM/PERT) by only considering time dependencies between activities, ignoring the resource constraints between the activities and project implementation process factors of human behavior, so it is difficult to overcome in the process of practical application of multitasking and the influence of uncertainty factors, the need to constantly adjust plan period and complicated projects, especially for uncertainty planning period often cannot be achieved.Based on Theory of Constraints (TOC) of Critical Chain Project Management (CCPM) by identifying the critical chain, setting up the project buffer (PB), the feeding buffer (FB) and resource buffer (RB), as well as the management of the buffer, overcomes the drawback of traditional project management. It has incomparable advantage for the uncertainty of complex project, and has greatly shortened the time limit than traditional project management method for a project.This paper respectively to the traditional project time management and critical chain project management (CCPM) are introduced, and Buffer in the critical chain project management and the construction period of several different calculation methods are compared and analyzed, based on PERT/CPM buffer method put forward by the domestic scholars is improved.Based on the case study of X hotel renovation project, this paper introduces the method of using traditional project management in the whole process of project time management, summarizes the experience and lessons, finds out the limitations of critical path method of the hotel renovation project. X hotel renovation project construction period is optimized with method of critical chain project management (CCPM), several period calculation method of the critical chain, in X hotel renovation project as an example, are compared and analyzed, This shows that the improved buffer calculation method based on the PERT/CPM is reasonable and has an advantage.