建筑工程项目管理教程 (15).ppt

Chapter 7 Cost control of project constructionlecture 1 Method of construction cost analysisnBased on the traditional deviation analysis,earned value analysis introduces an intermediate variable earned value to analyze the project schedule and cost.n Earned value quantifies work and work progress into value,enabling managers to objectively and accurately calculate the percentage of work completed.nBy measuring and calculating the budget cost of the completed work,the actual cost of the completed work and the budget cost of the planned work,the progress and cost variation of the implementation of the plan can be obtained,so as to achieve the purpose of judging the project schedule and cost plan.Cost control method-Earned Value AnalysisEarned Value Analysis(EVA)Cost control method Cost control method-Earned Value Analysisthe three parameters of the earned value analysisBCWP（Budgeted Cost for Work Performed）BCWPCompleted workload budget unit priceBCWS（Budgeted Cost for Work Scheduled）BCWSPlanned workload budget unit priceACWP（Actual Cost for Work Performed）ACWPCompleted workload actual unit price4Four evaluation indicators of earned value analysisCV（Cost Variance）CVBCWPACWPSV（Schedule Variance）SVBCWPBCWSCPI CPIBCWP/ACWPSPI SPIBCWP/BCWSCV0，in the saving stateCV0，ahead of scheduleSV1，in the saving stateCPI1，ahead of scheduleSPI 0,so the cost variation is in the saving state;SV=BCWPBCWS=33324150=8.18 million yuan.SV 0,so the project implementation is behind schedule.The advantage and disadvantage of earned value analysisnadvantage Cost analysis can be carried out to overcome the shortcomings of separate control of progress and cost in the past,so the earned value analysis can be introduced to quantitatively judge the implementation effect of progress and cost.ndisadvantage The cost analysis using earned value analysis is not intuitive.The amount of information is small and cannot be processed by a computer but can be supplemented by bar chart or table.10Thanks for watching!