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新时代的桥型选择中,需要重视耐久性指标,该文研究和建立了桥型选择中的耐久性指标体系。通过专家调研以及现有文献的研究与分析,在桥型选择过程中,将耐久性指标体系划分为整体耐久性和局部耐久性两个指标,整体耐久性从使用寿命、构件的易损度以及构件相对于不同桥型的重要性出发,分析了不同桥型的整体耐久性;局部耐久性主要通过桥型的可检查性、可维修性、可更换性来评判。最后通过实例结合有关桥型选择的层次分析法和模糊综合评价法验证所建立的耐久性评价体系的正确性、可行性,为进一步研究桥型选择中耐久性指标的比选提供了依据。
In the new era of bridge type selection, the durability index needs to be emphasized. This paper studies and establishes the durability index system in the bridge type selection. Through the research of experts and the research and analysis of the existing documents, the durability index system is divided into two indexes of overall durability and local durability in the process of bridge type selection. The overall durability is divided into three aspects: the service life, the vulnerability of the components and Based on the importance of the components with respect to different bridge types, the overall durability of different bridge types is analyzed. The local durability is mainly judged by the checkability, maintainability and interchangeability of the bridge types. Finally, the correctness and feasibility of the durability evaluation system established by AHP and fuzzy comprehensive evaluation are verified by examples, which provides a basis for further study on the durability index selection in bridge type selection.