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基于模糊评价理论和层次分析的混凝土梁式桥综合性能评估

, PP. 97-100

Keywords: 桥梁工程,混凝土梁式桥梁,层次分析方法,模糊评价理论,综合性能

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Abstract:

为了研究混凝土梁式桥梁综合性能的评估方法,采用层次分析方法建立了包含结构安全性、耐久性以及适用性的综合评估模型.根据混凝土梁式桥梁的特点从桥梁结构的安全性、耐久性以及适用性的角度出发,分别建立了基于目标层、准则层和指标层的桥梁结构的安全性评估模型以及基于目标层和指标层的桥梁结构的耐久性、适用性的评估模型.在已建立的评估模型的基础上,根据各指标的确定权重和评价标准,采用模糊理论对其安全性、耐久性和适用性分别进行评估,根据模糊理论的最大隶属度原则确定其评估结果.最后基于桥梁的安全性、耐久性和适用性的单项评估结果,对桥梁结构的综合性能进行评估分析.结论表明,该方法能够较好地反映混凝土梁式桥梁的综合性能,得出的性能评估结果与实际相适应,可以为桥梁结构的养护维修奠定理论基础.

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