Application of Grey Relational Analysis to the Optimal Selection of Bridge Type Schemes

The selection of the bridge type generally depends on the designer's experiences at the present time. It exist some subjectivity and one-sidedness unavoidably. On the basis of the characteristics of complexity and the uncertainty of optimal selection of bridge type scheme, grey relational analysis model in bridge type multi-scheme selection application has been put forward in this paper. The index system of influencing bridge type selection is determined. Application model and procedures of the grey relational analysis method are introduced. According to the degree how close it is with the ideal dot, the optimal scheme is easy to be selected out. Through the optimization analysis of Soueryu Bridge type schemes, it is proved that the optimal scheme of bridge type based on grey relational analysis has the strong recognition judgment ability. It is convenient, quantitative, and strict. It provided a new method and a possible new way for optimal selection of bridge type scheme.