Research On Evaluation Of Lean Construction Management Level Of Prefabricated Building Project

The extensive construction and management model of traditional construction projects has drawbacks,and it is difficult to meet the needs of urbanization,housing industrialization and social sustainable development.Therefore,the prefabricated building with the advantages of environmental protection,energy-saving and high quality has become an important architectural form that conforms to development.However,the development process of prefabricated building in China is slow and the advantages are not obvious.It is due to the excessive extension of traditional construction management methods.Implementing lean construction management plays an important role in improving the efficiency of construction of prefabricated building projects and achieving efficient value-added projects.The level of lean construction management can reflect the construction and value-added efficiency of the project to a certain extent,reflecting the management problems in the construction process.Therefore,it is of great significance to evaluate the lean construction management level of prefabricated building projects.Based on the background,the analysis of the current status and the research on related fields at home and abroad,this paper discusses the research status and research signiflcance.It expounds the basic characteristics and construction process of the prefabricated construction project,the basic concepts,core ideas and related theories of lean construction management.Based on the evaluation index determination principle,relevant theories and related research and practice research,the initial evaluation index system of lean construction management level of prefabricated building projects including 5 first-level evaluation indicators and 26 second-level evaluation indicators was determined from the perspective of construction.Through the reliability and validity test of the initial indicator importance questionnaire results,the indicators were screened,and finally the final evaluation index system including 5 first-level evaluation indicators and 23 second-level evaluation indicators was established.Based on the comparison and selection of commonly used evaluation methods and weight determination methods,the evaluation model constructed by using the cloud model as the evaluation method and the AHP&Entropy weight method comprehensive weighting method as the weight determination method.The implementation steps of the evaluation model are described.Finally,taking the Project H as an example to empirically analyze the constructed evaluation model.While determining the lean construction management level of project H and lean construction management level of each construction stage,the applicability and feasibility of the evaluation model were verified.Based on the results of research and empirical analysis,the paper puts forward suggestions for improving the lean construction management level prefabricated building projects,providing reference value for implementing lean construction and upgrading lean management level for prefabricated building projects.In addition,it can also promote the rapid and stable development of nrefabricated huilding.