基于最优传递矩阵的不确定型层次分析法在桥梁安全评估中的综合应用

Comprehensive Application of Uncertain AHP Based on Optimal Transfer Matrix in Bridge Safety Assessment

在桥梁的安全评估中,采用确定型层次分析法,存在指标的不确定性和模糊性。针对工程实例,采用不确定型层次分析法,建立桥梁递阶层次模型,通过对比4种不同指标权重计算方法,最终选用最优传递矩阵法进行桥梁指标权重的计算。结果表明,不确定型层次分析法能够全面考虑影响桥梁安全性的各种因素;最优传递矩阵法计算权重精度高,桥梁安全评估结果更加可靠。

In the safety assessment of bridges,deterministic analytic hierarchy process(AHP)is adopted,and there are uncertainties and fuzziness in the indicators.Aiming at the engineering example,the uncertain analytic hierarchy process(AHP)is adopted to establish the hierarchical model of bridge.By comparing four different calculation methods of index weight,the optimal transfer matrix method is finally used to calculate the index weight of bridge.The results show that the uncertain analytic hierarchy process can comprehensively consider all factors affecting bridge safety.The optimal transfer matrix method has high accuracy in calculating weight,and the results of bridge safety assessment are more reliable.