Abstract: The selection of the bridge design plans generally depends merely on the designer's experience at the present time.It exists some one-sidedness unavoidably.In this paper, the gray correlation analysis method in gray theory has been applied to the selection of bridge plans for seeking the best comprehensive result.It gives a definite meaning on avoiding and reducing the errors in designing works.

Key words: gray theory, explicit value, correlation degree, bridge design, best plan

摘要： 应用灰色理论中的关联分析方法,以广西融水水东大桥的方案比选为背景,考虑桥梁工程建设中的各种因素进行综合评判,求得最佳桥梁方案.在避免或减少桥梁设计的失误上有较大的意义.

关键词: 灰色理论, 白化值, 关联度, 桥梁设计, 最佳方案