Theory Of Time In The Application Of Lean Construction

With the increasing growth of the project scale of modern project, the management of projects is becoming more and more complex and difficult. Despite various theories, methods and tools which are applied in project management, the waste of time, resource, and communication in project construction still remains problem and target can not be met as expected. Therefore, people hope that there will be new management theories and methods which can be used in the project management. With the research of JIT theory and lean thoughts, the thesis put forward the theory of project management by using the flow chart, which provides a new theory direction for project management, and allows the use of new theories in the project management in the future.Currently, the level of management thoughts and methods is not very high. Then how to make research on the lean construction of projects for construction enterprises by using JIT theory, how to choose the proper comprehensive management methods of projects by combing the lean thoughts, and how to construct the project management system which fits the reality of the construction enterprises in our company. These are points where the difficulties and creativity lies.Adopting the method of linking theory with practice, targeting the application of lean thoughts in the project management, based on the references of literatures and wide collection of data, the thesis make certain analysis of the application of lean thoughts, and make a research on how to apply the lean thoughts in project management according to the domestic reality. By introducing the emergence of JIT theory and LP, the thesis will firstly elaborate the lean construction thoughts after primary understanding of them. The thesis will elaborate from three aspects: lean design, lean purchase, and lean construction.1. In lean design, the writer may elaborate from the aspect of the requirement raised by the designer, namely, define the design task and limits, the designer should understand the construction in some degree, designer should communicate with the owner in time and at last give some advices to them on the quality control of the design.2. In the elaborate of lean purchase, the importance of JIT purchase is focused. 3. the elaboration of lean construction starts from the three targets of project management: time, cost and quality. It is explained that how to manage the three aspects by using lean thoughts in construction and finally reach the balances of the three targets. Besides, certain elaboration is given to the security management which is very important in projects. And then after deep analysis of the Interaction diagrams in UML, the writer make certain changes to Interaction diagrams and develop a new flow chart, which is introduced into project management as a new project flow management tools. Finally, by analysis of the 2 cases where the new flow chart is used in purchase and construction, the writer elaborate how to use the flow chart in the actual project management.