Research On Green Construction Evaluation Of Urban Deep Foundation Pit Based On OWA Operator Improved AHP Improved Grey Aggregation Analysis Method

As a major construction activity in engineering construction,the construction of urban deep foundation pit is easy to bring bad impact on the overall ecological environment of the city.Therefore,it is a good measure to carry out green construction evaluation in the process of urban deep foundation pit construction.At present,there are few researches on the green construction evaluation system of deep foundation pit engineering in China,and most of them only stay in the theoretical level,while the research on the evaluation theory system based on practical application is less.The construction activity is a dynamic process,and the evaluation of green construction should also be able to provide dynamic response,so as to ensure that the evaluation theory can objectively feed back the situation of green construction.In view of this,this paper carries out a series of related research,and the main achievements are as follows:(1)Referring to the relevant standards,literature,construction engineering and the uniqueness of urban deep foundation pit engineering,this paper summarizes and analyzes the green construction evaluation index of urban deep foundation pit;Through the expert questionnaire survey,the evaluation index is checked,which sets up the content and skeleton for the establishment of green construction deep foundation pit evaluation model;(2)OWA operator is used to optimize the weight distribution of AHP results,which ensures the stability and objectivity of index weight distribution in urban deep foundation pit green construction evaluation model;(3)The grey clustering analysis method is adopted to analyze the green construction evaluation process;Combined with the characteristics of green construction,a scientific and objective evaluation group of green construction is established by using vague value similarity summary method;Ensure the diversity of information and the objectivity of the evaluation results;(4)In order to make the green construction evaluation method based on scientific theory better applied in practice and reduce the threshold of actual evaluators,the green construction evaluation platform of urban deep foundation pit is developed based on Web;The evaluation information collection,green construction evaluation and evaluation result analysis are integrated into a system,which facilitates the operation of field personnel and provides the function of process optimization and improvement for green construction.In this paper,taking the green construction of deep foundation pit in the Yangtze River shipping project as an example,the green construction model of urban deep foundation pit and web platform are used to analyze the case.The evaluation results prove the actual effect of green construction of deep foundation pit in the Yangtze River shipping center,which is consistent with the actual situation,and verifies the rationality of the model and platform.