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Evidential reasoning approach for bridge condition assessment

机译：桥梁条件评估的证据推理方法

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摘要

Bridge condition assessment is usually conducted by bridge inspectors on the basis of visual inspections. This inevitably involves human being's subjective judgments and uncertainties. In order to model uncertainties associated with subjective assessments, this paper presents an evidential reasoning (ER) approach for bridge condition assessment. The ER approach has the following advantages over other approaches for bridge condition rating: (1) the relative importance of different bridge components and elements is incorporated into the model; (2) bridge condition ratings are treated as assessment grades rather than precise numerical values, which is more logical; (3) bridge element can be assessed to two adjacent assessment grades at the same time if it cannot be precisely assessed to only one assessment grade, each with a belief degree (probability, confidence) to show to what extent the element is assessed to the two different grades, respectively; (4) the overall assessment of a bridge is a distributed assessment, which provides a panoramic view about the bridge condition. A case study is provided to illustrate the implementation process of the ER approach for bridge condition assessment.
机译：桥梁状况评估通常由桥梁检查员在目视检查的基础上进行。这不可避免地涉及人类的主观判断和不确定性。为了建模与主观评估相关的不确定性，本文提出了一种桥梁条件评估的证据推理（ER）方法。相对于其他桥梁条件评级方法，ER方法具有以下优点：（1）将不同桥梁组件和元素的相对重要性纳入模型； （2）桥梁状况等级被视为评估等级，而不是精确的数值，这更合乎逻辑； （3）如果桥梁要素不能仅精确地评估为一个评估等级，则可以同时将其评估为两个相邻的评估等级，每个评估等级都具有置信度（概率，置信度）以显示对该要素进行评估的程度分别有两个不同的等级； （4）桥梁的总体评估是一种分布式评估，可提供有关桥梁状况的全景视图。提供了一个案例研究来说明ER方法用于桥梁状况评估的实施过程。

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