| With the development of knowledge economy and gradual progress of the information intensive society, the relationship between modern project every key elements has become stronger, the demand for the project integration management has become more important. So far as the construction field concerned, integration management requires that the enterprises should have the ability to achieve the construction target within a lower cost, a suitable time and a higher quantity. According to the research in and abroad China, we can find that Earned Value is an effective method to realize the purpose.The uncertainty of every activity time in projects has deep effects to the projects and the project scheduling problems. It impacts the traditional project scheduling methods.The basic principle of earned value is introduced and the concept, the origin and the development of earned value are included. The index system and six cases of earned value management are analysed and studied in this paper.On the basis of describing the basic theories of earned value, this paper brings forward and comparatively integrity EVM flow. The BCWP calculation methods are studied corresponding to different conditions. Two new performance indicators are added and the calculation formulas are put forward-the rate of CV and the rate of SV. The reasons of the variance are analysed and the measures are given.This paper brings the activity group and the time adjuster into the project scheduling when the schedule of activity is unfixed, which makes the projects completed under plan with higher probability.The paper has a hot talk about the method of calculating the Earned Value indexes when the schedule of activity is unfixed. The answers of Earned Value indexes to one project are given in this paper. The bound of SPI and CPI to one project are calculated, which are very important in project control, such as cost control, schedule control and quality control. |
PDF Full Text Request