The Research On The Application Of Earn Value Method In Construction Cost Control Based On Bill Of Quantity

Earn Value Method, as an international popular project management method, a key way of project cost control, was first introduced into China in 90's in the 20th century. However, it was not effectively promoted in construction project management in China. Meanwhile, Bill of quantity pricing rules has regulated China pricing in construction field since it was introduced in 2003.Compared to traditional mode of quota valuation, project cost structure and adjustment pattern of contract price have changed a lot under the mode of bill of quantity. However, at the initial stage, there is less research on cost management based on the mode of bill of quantity. All of the problems need to be solved to combine theory and practice urgently, to raise the project cost management to a higher level.This thesis chooses cost control of construction project as the research object, starting from the basic theories of Earned Value Method, combining with the cost structure characteristics under the mode of bill of quantity, on the basis of target cost under the mode of bill of quantity, at last, according to the application process of earned value method, forms a suitable set of earned value cost management method for Chinese construction enterprise.This paper first analyses the project cost structure under the mode of BQ, and problems to be solved in construction cost control when using Earned Value Method. Then solve the problems above through the determination of target cost under BQ and the improvement of Earned Value Method and so on. Meanwhile, provide the application process of Earned Value Method under bill of quantity. At last, use it in a real project case.Through the research on this subject, the author's conclusions are as follows:First, under the rules of BQ, the determination of target goal is the basics of the application of Earned Value Method in construction cost control. Second, the improved integrated schedule and cost combined curve facilitate projects cost data statistics and measurement.Third, the two deviation analysis (critical path and non-critical path deviation analysis,local bias and the overall bias analysis) are much more practical, accurate and scientific.