System Dynamics On Public Project Management Process

With the steady growth of China’s modernization process and the nationaleconomy, the construction practice of a large number of public projects desperatelyneeds the further in-depth systematic research to the public project management. Basedon the theory of system dynamics, the main influence factors of public project areanalyzed and the model of factors is built. The overall public project managementsystem dynamics model and progress, quality, cost, and resource management as thefour submodels are constructed, and then an empirical analysis is made.The relation between the quality, schedule and cost of the public project is close,and the project quality, schedule and cost are affected by risk, comprehensivemanagement of human resources, whose interaction relationship is analyzed and therelation model of public project main influence factors is constructed.The whole processof micro management of public project is studied, and the system dynamics model ofthe whole is constructed. The whole model is divided into plan, quality, cost, scheduleand resource management of five major modules, then the main influencing factors ofevery subsystem are defined, the relation equation between factors of each model isdetermined, schedule, quality, cost and resource management four submodels arerespectively established.The model is applied in assume a secondary water publicproject of a city water conservancy departments, model results and the actual situationof the project compared and analyzed. The experimental results show that once theproject plan and the reality disjointed, it will seriously affect the entire project schedule,cost and quality. So planning and the rework problem are crucial to the progress of theentire project. Therefore, the project plan must be based on the actual progress of theproject team and the resources, adjusted and amended in real time, to improve theeffectiveness and rationality sharply. Meanwhile，through the research of different staffallocation proportion impact on the project management, it shows that the humanresource management and allocation are very important in the process of projectmanagement. The allocation proportion of the staff is not the larger, the better, and thedynamic balance of human resources is an important factor to guarantee the quality,progress and investment of the construction project are in effective control. Choosing anappropriate staff allocation proportion is of certain guiding significance to the resourcemanagement of the public project. And it’s beneficial to save the project material and human resource, control the fund and cost of the project investment, and ensure theproper progress and the quality of the project. Finally, the causes of project behavior andthe actual situation are analyzed comparatively, some suggestions inproving theimplementation process management of public project are put forward such as projectplan, resource allocation and coordination etc. from micro and phase angle.The public project process management system model based on the SystemDynamics emphasizes the causal relationship between the structure and the variables ofthe system, shows the complex relationship between the elements inside the publicproject system, makes the public project management more scientific and specific;reduces the experimental cost and operation difficulty, adapts the requirement of publicproject management dynamic system, provide reference for project manager to developthe progress management strategy.