Fuzzy multiple attribute decision making process based on relative approach degree for selection of structural form

A fuzzy multiple attribute decision-making model for selection of structural form is built up. A method of determining the fuzzy satisfaction degree matrix of the attributes of structural forms is put forward to effectively process the fuzzy information. To get over the shortcomings of determining the optimal preferred scheme directly through Euclid distance, a definition of the relative approach degree is presented, and a fuzzy multiple attribute decision-making process based on the relative approach degree and its solving procedure are proposed. The decision making process of selecting the optimal structural form is shown by taking large-span spatial structures as an practical example. The results of the engineering practice shown that the method proposed can effectively solve the problem of the choice of the optimal structural form in the fuzzy environment.