As the earned value method can not determine the degree of deviation,to which corrective measures should be taken,the effect of cost control is not ideal.In order to solve the problem an improved earned value method is proposed.The method introduces two evaluation indexes:relative cost variance and relative schedule variance,and proposes to set a threshold value for the project and its every activity according to the size of the relative cost variance.Once the relative cost variance exceeds the threshold range,corrective measures must be taken immediately.The Excel small program of cost analysis is given.The method is applied to the cost control of construction projects.The results show that as long as the basic data of cost control is input into Excel,Excel will immediately output the cost variance,schedule variance,relative cost variance and other evaluation indicators of the project and each process.By viewing the relative cost variance of activity,you'll know which activity is causing the variance.So it is convenient to monitor the cost in real time.It effectively solves the problem that it is impossible to judge whether there is a bigger deviation between actual cost and planned cost according to cost variance and cost performance index.
关键词
挣值法/改进/相对成本偏差/相对进度偏差/阈值
Key words
Earned value method/Improvement/Relative cost variance/Relative schedule varianc/Threshold value
维普
万方数据