Green Degree Evaluation And Application Of Temporary Facilities In Construction Site

With the rapid development of China’s economy and the acceleration of the pace of modernization,the number of domestic new projects is increasing and the scale of construction is becoming larger and larger,but at the same time,the destruction and pollution of ecological environment caused by construction activities are becoming increasingly serious.Therefore,it is urgent to change the construction production mode of high energy consumption and high pollution in the construction industry,and put the concept of green construction throughout the whole life cycle of the project.The construction stage is the main link to achieve energy saving and consumption reduction in the construction industry.The green construction level of various production activities in this link directly determines the overall green benefits of the project.As an important part of the construction stage,the green construction attribute of temporary facilities can not be ignored.Based on this research background,this paper establishes the evaluation index system and evaluation model of green degree of temporary facilities in construction site.The specific work and research results are as follows:1)According to the current situation of the construction site temporary facilities development,this paper studies the relevant literature at home and abroad,selects the evaluation index related to the research content,so as to form a preliminary evaluation index system.Combined with the method of questionnaire and data analysis,the evaluation index system is optimized and improved,and an evaluation index system is established,which includes four first level indicators(ecological environment balance,scientific spatial layout,reasonable construction economy,and coordinated management and operation),eight second level indicators,and 29 third level indicators.According to the evaluation index system and green construction evaluation related standards and specifications,the detailed rules of evaluation qualitative index are constructed.2)In this paper,AHP method and expert scoring method are used to determine the subjective weight of the index,entropy method is used to determine the objective weight of the index,and the multiplication synthesis principle is used to fuse the subjective and objective weight to determine the combination weight of the index.Finally,based on the fuzzy matterelement theory,the green degree evaluation model of temporary facilities in construction site is constructed,and the main factors affecting the green degree of temporary facilities in construction site are analyzed combined with barrel theory factor.3)Taking the comprehensive building Q construction project in a province as an application case,combined with the green degree evaluation model of temporary facilities in construction site constructed in this paper,the project is simulated and evaluated,and the evaluation results are basically consistent with the green construction level evaluation level of the project by the Ministry of housing and urban rural development.It shows that the green degree evaluation model constructed in this paper can objectively and accurately reflect the green construction level of temporary facilities in the construction site.