基于组合权值灰关联法的旧桥加固方案评价

旧桥加固方案评价是旧桥加固工程中一个重要的环节。针对方案评价中存在主观影响因素过多、评价指标权值不确定性等问题,在方案评价常用的灰关联理论中引入组合权值的概念,将改进AHP法和熵值法相结合,提出了确定指标权值的一种非线性目标规划方法,建立了组合权值灰关联法评价模型。该模型考虑了人们判断的模糊性和方案评价中存在的灰色信息,从而使方案评价更加客观。实例分析表明,采用该方法的评价结果符合工程实际。

Evaluation on reinforcement schemes of existing bridges based on combination-weight-gray-relation method

How to evaluate the reinforcement schemes of existing bridges is an important step in engineering projects.Since the schemes evaluation had many subjective factors and uncertainty of the index weights existed in current evaluation,the conception of combination weight was used in gray relation method which was usually used in the evaluation,a nonlinear-objective programming method based on improved AHP method and information entropy was presented,and the evaluating model was established.The fuzziness of people's judgment and the gray information in evaluation were taken into account in this model,thus the evaluation was more objective.An example indicates that this method has a good accordance with the reality.3 tabs,11 refs.