不确定层次分析法在斜拉桥状态评估中的应用

Uncertain type of Analytic Hierarchy Process (AHP) in system engineering was applied to the condition assessment of long span bridges. Uncertain type of AHP is a practical decision-making method with multi-criteria. By making use of interval number judgment matrix, it is supposed to reflect the fuzziness and uncertainty of bridge assessment better than the traditional AHP. In addition, the optimal transitive matrix is adopted to calculate interval number judgment matrix, which makes weight of indices more reliable and accurate. Therefore, it is applicable to the condition assessment of cable-stayed bridges. The feasibility and applicability of uncertain type of AHP was proved by taking the condition assessment of Harbin Songhua River Bridge as an example.