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大跨径桥梁综合评估中的不确定型层次分析法

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Keywords: 桥梁工程,大跨径桥梁,层次分析法,最优传递矩阵,权重

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Abstract:

针对传统的层次分析法(AHP)的缺陷,在大型桥梁综合评估中引入不确定型层次分析法,并首次将最优传递矩阵法应用到大跨径桥梁的综合评估中,介绍了该方法的基本概念以及解决问题的步骤。将不确定型层次分析法和最优传递矩阵法应用于哈尔滨松花江斜拉桥的综合评估中,建立了该桥的综合评估模型,确定了评估指标的权重并得到该桥最终的综合评估值。结果表明,该方法能够较为全面地考虑影响桥梁安全性和耐久性的主要因素,反映桥梁的综合状况;并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。且采用最优传递矩阵法得到的评估指标的权重可信度强、准确度高。因此,不确定型层次分析方法得到的评估结果可靠、适用,从而确保了桥梁的安全与通畅。

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