Planning/Control Process Improvement Study Of Large-scale Engineering Construction Project

With the continuous development of China's economy and society,more and more engineering projects tend to be large and complex.Due to the long cycle,more complicated,and more uncontrollable factors,large-scale engineering construction projects have caused the actual construction to be unfinished in the scheduled schedule and expected budget.The lack of comprehensive project plans and control technologies covering qualitative and quantitative indicators is one of the main reasons for the failure of large-scale engineering construction projects to be completed on time.Through research on the problems in project planning/control,the research introduces the progress risk analysis technology(SRA)in the planning/control process of large-scale construction projects to improve the completion rate and stability of large-scale engineering construction projects.(1)VES-based project risk control formulation strategy research: Under the traditional project management,most of the project performance evaluation is carried out with milestones and uniform time points as monitoring time points.The monitoring method does not consider the importance of the process at the monitoring time.Based on the preparation of the project network map,the paper intends to introduce the process importance(VES)index in the project control point selection strategy by fully considering the process uncertainty,the impact of the process on the project duration and the project network characteristics.Three strategies for determining the project monitoring time are proposed to effectively avoid the problem of inefficient control caused by setting the linear monitoring time in the traditional method.At the same time,it is possible to determine the time point for the key monitoring and the manager's energy allocation.Develop a project monitoring point control plan to provide a scientific and quantitative approach.(2)Introducing SRA into the buffer calculation,and proposes a research on the improvement of the project buffer setting based on VES: Based on the research on the calculation method of the key chain buffer in the project control,the process uncertainty is comprehensively considered in the buffer setting.Sexuality,the impact of process on project duration,project network characteristics,resource tension,and manager risk appetite,a buffer size calculation method is proposed,which is verified by the example test and is more affixed with the traditional buffer method.In combination with the actual project,the construction period is shortened and the delay rate is reduced.(3)On the basis of(2),the method model of manager's energy allocation in project plan control is proposed: the actual execution stage of the project needs to be continuously and dynamically adjusted according to the project execution performance and the actual situation of the project,by adopting CC/BM and SRA combines and proposes a buffer monitoring strategy and a method of assigning managers' energy after project delays to improve project completion rate and stability.The research provides three control strategies.The method can not only improve the defects of the theory in practical application,but also provide method guidance and technical support for the specific construction project management and control,and provide theoretical and methodological support for the development project management knowledge system.,has a good theoretical value and practical significance.The article studies the above problems,and through Monte Carlo simulation to verify the effectiveness of the research,provides new ideas and methods for the study of large-scale engineering construction project planning / control process.