Research On The Project Schedule And Cost Management Of C Road Based On The Combination Of Earned Value Method And Statistical Process Control

The rapid development of urbanization has brought about the increasingly huge and complicated construction of projects,making construction schedule and cost management more and more difficult.Once the project loses its control over schedule and cost,the loss will be immeasurable.However,in actual project construction,project delays and overruns often occur.There are many methods for project schedule and cost management,among which the most commonly used and representative is earned value management.Traditional earned value management can monitor the progress and cost of the project,measure the current efficiency of the project,and determine whether there is any deviation from the original plan.However,the earned value method only allows to compare the deviation between the occurred value and the budget value,and does not reflect the acceptable level of deviation,so it is difficult to issue an early warning to the project manager of abnormal fluctuations in the execution process.In order to improve the deficiencies in the earned value management and reduce the cost overruns and schedule delays in the construction process,it is no longer just passive adjustments afterwards.Combining statistical process control theory and monitoring abnormalities through statistical analysis techniques,it reflects statistically that the project is in a stable and acceptable state during the implementation process.This article combines the previous earned value management methods with statistical process control theory,summarizes earned value theory and statistical process control ideas,and expounds the method design and operation steps.Finally,a case study was conducted on the municipal project of C Road to verify the possibility of using the control chart to regulate the plan and cost of the project,and comparing the real condition of the project with the use of control chart monitoring situation of the project,it was found that the control chart not only solved the problem over time As the deviation of cost and schedule becomes larger and larger,the situation can only be passively adjusted.It can also provide timely warning of possible costs and schedule out-of-control risks of the project,make up for the insufficiency of the earned value method,and enable project managers to discover project performance deviations in time And its reasons,it is possible to take adjustment measures in time.In this article,the innovative application of statistical process control ideas to the traditional earned value management of the project helps to enhance the existing management personnel’s monitoring level of progress and cost in the construction of the project,and has a certain level of actual project management.