组合赋权灰关联法在桥梁加固方案优选中的应用

Application of Gray Relational Method Dased on Combination Weighting in Optimal Selection of Reinforcement Proposals for Bridges

基于改进AHP法和熵值法,提出了确定指标权值的一种非线性目标规划方法,该方法把主观和客观两类权值信息相结合,既能充分利用客观信息,又能满足决策者的主观愿望.同时针对桥梁加固方案优选中存在诸多的灰色信息,采用灰关联度分析进行方案优选.最后通过工程实例说明了该决策方法的合理性和实用性,为桥梁加固方案决策的科学性提供了一个新的思路.

This paper proposes a nonlinear-objective programming method of combination weighting based on improved AHP method and information entropy. The method combines information on subjective weights and objective weights, and can sufficiently utilize objective evaluation information and meet the requirements of decision-maker. Because of the gray informations in the optimal selection of reinforcement proposals for bridges, a fuzzy grey relational method is put forward at the same time. Finally, this method is demonstrated to be reasonable and practical by real project and it provides a new way to select reinforcement proposals for bridges more scientifically.