高寒盐沼环境下公路混凝土梁桥可靠性评价
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作者单位:

兰州交通大学

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中图分类号:

X951

基金项目:

甘肃省科技厅科技重大专项(19ZD2GA002)


Reliability Evaluation of Highway Concrete Bridges in Alpine Salt Marsh Environment
Author:
Affiliation:

lanzhou jiaotong university

Fund Project:

Major Science and Technology Project of Gansu Provincial Department of Science and Technology (19ZD2GA002)

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    摘要:

    为准确评估高寒盐沼区下的桥梁可靠性等级,分别从桥梁的运营安全性、服役适用性、材料耐久性方面筛选指标建立可靠性评价指标体系。应用改进CRITIC-G1法分别确定主、客观权重,考虑指标对权重影响,根据变权理论获取指标综合权重。利用集对-可变模糊集模型进行综合评价,结合可靠性评价特征值,引入二元语义法对其进行二次评估,进一步确立其可靠性等级状况。最后通过实例证明,表明该模型的有效性和可操作性。为该地区的混凝土梁桥后期加固、维修提供了理论依据。进而为该地区的中小型桥梁的预防、加固提供建议。

    Abstract:

    In order to accurately evaluate the reliability of the bridge under the alpine salt marsh area, the reliability evaluation index system was established by screening indicators from the aspects of the bridge's operational safety, service applicability, and material durability. The improved CRITIC-G1 method is used to determine the subjective and objective weights respectively, considering the influence of the indicators on the weights, and obtaining the comprehensive weights of the indicators according to the variable weight theory. It uses the set-pair-variable fuzzy set model for comprehensive evaluation, combined with the reliability evaluation characteristic value, and introduces the two-tuple linguistic method to conduct a second evaluation to further establish its reliability level status. Finally, an example is used to prove the effectiveness and operability of the model. It provides a theoretical basis for the later reinforcement and maintenance of concrete beam bridges in this area. And then provide suggestions for the prevention and reinforcement of small and medium-sized bridges in the area.

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陶泽,郝伟,王金辉,等. 高寒盐沼环境下公路混凝土梁桥可靠性评价[J]. 科学技术与工程, , ():

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  • 收稿日期:2021-11-22
  • 最后修改日期:2022-04-14
  • 录用日期:2022-04-30
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