Study On Time Management Of Construction Project Based On Fuzzy Theory

From the 50-60's in 20th century, with the development of specialization, aggravation of competition and the globalization of economy, enterprise begins a way of organizing resource that is flexible and faced directly to customers and results which is called project management. To meet the goal, it is necessary and profitable to make feasible plans and execute effective controls.The network planning methods in the time fields of project management can articulate not only all the activities and relations of a project completely, but the critical activities through mathematical methods and optimization techniques. Nevertheless, the simplicity of activity duration estimating in the CPM(Critical Path Method) can hardly engender actual value. While PERT (Program Evaluation and Review Technique) always gets smaller project duration with larger variation because of a series of hypothesizes which intended to make calculation easier. In this thesis we use fuzzy network planning technique to schedule the large projects. That the duration is defined with fuzzy number in fuzzy network make it better to reflect people's thinking characters when making duration estimating. Using this method we can monitor the other paths while monitoring the critical path and get a better adoption to the project circumstance.Performing the plan is much more important than plan itself. This thesis makes the hypothesis that fuzzy control can also be applied to project scheduling management on the basis of fuzzy system being any nonlinear system's omnipotent simulator. This thesis makes a detailed analysis of fuzzy control in apply of project time management, and chooses the appropriate algorithm structure which fits the character of project performing so as to realize the fuzzy engineering project time management system at last.