Routine Highway Bridge Inspection Condition Documentation Accuracy and Reliability
Routine Highway Bridge Inspection Condition Documentation Accuracy and Reliability
复制标题
DOI：
10.1061/(asce)1084-0702(2004)9:4(403
复制
发表时间：
2004-07-01
影响因子：
3.6
通讯作者：
Moore, Mark
中科院分区：
文献类型：
--
作者：
Phares, Brent M.;Washer, Glenn A.;Moore, Mark
常规检测是公路桥梁检测中最常见的一种形式，以满足国家《桥梁检测标准》的要求。在这些检查过程中生成的文件的准确性和可靠性对于交通部建设、维护和修复资源的分配至关重要。常规检查通常只使用目视检查技术完成，严重依赖桥梁检查员的主观评估。有鉴于此，并考虑到目测可能具有影响其可靠性的其他限制的事实，联邦公路管理局发起了一项调查，以检查目前在美国应用于桥梁的目测的可靠性。本文将总结这项与常规检查文件的准确性和可靠性有关的研究结果。从实验研究中得出了一些重要结论。通常，人们发现，所有结构状况文档的收集都具有显著的可变性。具体地说，95%的单个桥梁部件的主要元件状态额定值将在平均值的两个额定点内变化，只有68%的额定值将在一个点内变化。通常为支持条件评级而收集的文件也具有很大的可变性，视察员拍摄的实地笔记和照片的数量和类型就是一个例证。关于要素一级检查的使用，发现要素的使用大体上符合公认的要素指南。然而，这些元素的条件状态分配有很大的可变性，在某些情况下，条件状态不能正确地应用于特定元素。
Routine inspection is the most common form of highway bridge inspection to satisfy the requirements of the National Bridge Inspection Standards. The accuracy and reliability of documentation generated during these inspections are critical to the allocation of Department of Transportation construction, maintenance, and rehabilitation resources. Routine inspections are typically completed using only the visual inspection technique and rely heavily on subjective assessments made by bridge inspectors. In light of this, and given the fact that visual inspection may have other limitations that influence its reliability, the Federal Highway Administration initiated an investigation to examine the reliability of visual inspection as it is currently applied to bridges in the United States. This paper will summarize results from this study related to the accuracy and reliability of routine inspection documentation. A number of important conclusions were developed from the experimental study. Generally, it was found that all structural condition documentation is collected with significant variability. Specifically, 95% of primary element condition ratings for individual bridge components will vary within two rating points of the average and only 68% will vary within one point. Documentation generally collected to support condition ratings also has significant variability as exemplified by the number and types of field notes and photographs taken by inspectors. With respect to the use of element-level inspections, it was found that element usage was generally consistent with the Commonly Recognized Element Guide. However, there is significant variability in the condition state assignments of those elements and in some cases the condition states are not applied correctly to particular elements.