基于云模型和DEMATEL-CRITIC的起重机金属结构安全评估OA

In this paper,a hierarchical safety assessment method based on cloud model and DEMATEL-CRITIC is proposed considering the fuzziness and randomness in the safety assessment process of crane metal structure.Based on the theory of cloud model,the membership degree of each evaluation index and different safety evaluation levels was obtained by using normal cloud model,and the random representation of fuzzy concepts was realized.DEMATEL and improved CRITIC method were used to generate comprehensive weights with higher credibility and both subjective and objective.The comprehensive membership degree of each evaluation structure was obtained through calculation,which is used to determine the safety level of the whole machine metal structure and comprehensively evaluate the safety state of the crane.Through case analysis,the accuracy and effectiveness of this method are verified,which provides a new method for the safety assessment of crane metal structure.