Routine Highway Bridge Inspection Condition Documentation Accuracy and Reliability

被引:214
|
作者
Phares, Brent M. [1 ,2 ]
Washer, Glenn A. [3 ]
Rolander, Dennis D. [2 ,4 ]
Graybeal, Benjamin A. [2 ,5 ]
Moore, Mark [6 ]
机构
[1] Iowa State Univ, Ames, IA 50010 USA
[2] Wiss Janney Elstner Assoc Inc, NDE Validat Ctr, Mclean, VA 22101 USA
[3] Fed Highway Adm, NDE Validat Ctr, Mclean, VA 22101 USA
[4] Wiss Janney Elstner Assoc Inc, Fairfax, VA 22031 USA
[5] Profess Serv Ind Inc, Turner Fairbank Highway Res Ctr, Mclean, VA 22101 USA
[6] Wiss Janney Elstner Assoc Inc, Norcross, GA 30093 USA
关键词
Bridges; highway; Routing; Bridge inspection; Reliability; United States;
D O I
10.1061/(ASCE)1084-0702(2004)9:4(403)
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
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.
引用
收藏
页码:403 / 413
页数:11
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