不确定型AHP在单轨桥梁状态评估中的应用

针对传统层次分析法（AHP）的缺陷,在跨座式单轨桥梁状态评估中引入不确定型层次分析法,该方法能够更好地反映桥梁评估中的模糊性和不确定性,很好地表达桥梁专家的意见.首次将区间数对数最小二乘法应用到单轨桥梁评估指标的权重计算中,论述了该方法求解权重的步骤.以重庆某单轨桥梁的上部结构为例,建立状态评估模型,通过专家构建的区间数判断矩阵,确定了评估指标的权重并得到该桥上部结构的状态评估值.结果表明,利用不确定型AHP对单轨桥梁进行状态评估具有一定的科学性和实用性,这种方法的应用将会为跨座式单轨桥梁的养护管理提供科学依据.

Application of Uncertain Type of AHP on Monorail Bridge Condition Assessment

In view of the defects of the traditional analytic hierarchy process（AHP）,the uncertain type of AHP was adopted in the condition assessment of monorail bridges.This method can reflect the uncertainty and fuzziness of monorail bridge assessment better than the traditional AHP,and it expresses the opinions of bridge experts easily.The interval logarithm least square method（ILLSM）was first applied to the condition assessment of monorail bridges,and the steps of weight solution of this method were introduced.A bridge superstructure of Chongqing monorail as an example,its condition assessment model was built.Based on the interval number comparison matrix established by an expert,the weights of assessment indexes were fixed and the final condition assessment results were obtained.The results indicate that,the uncertain type of AHP used in condition assessment of monorail bridges is scientific and practical,and its application is a scientific basis for the maintenance management of straddle monorail bridges.