层次分析法在管桥失效后果评判中的应用

层次分析法是一种将复杂的决策系统层次化,通过逐层比较各种关联因素的重要性来进行分析?决策,提供定量的依据,特别适用于那些难以完全定量化的场合。在管桥的风险评价过程中,失效后果的评价是十分重要的一部分。管桥系统比较复杂时,常采用模糊综合评判的方法。其中,各因素对失效后果评判结果所起作用(因素权重)往往难以确定。采用层次分析法可以对各因素进行逐个比对,得到判断矩阵,通过对矩阵进行运算得到最终评判的因素权重。

The Application of Analytic Hierarchy Process in the Evaluation of Failure Consequence of Piping Bridge

Analytic Hierarchy Process(AHP)is a method used in complex decision-making system.By stratifying the problem and comparing the importance of the factors in the problem,quantitative analyses can be conducted and proper decision can be made.In the risk assessment of the piping bridge,the evaluation of failure consequence is an important part.Because the piping bridge system is complex,fuzzy assessment is usually adopted in risk assessment.In order to get the weights of the factors in the fuzzy assessment of failure consequence,AHP is introduced into the assessment.By using AHP,a matrix can be obtained and the weights can be calculated through the matrix for final judgment.