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首页> 外文期刊>Journal of Applied Geophysics >Applications of ground penetrating radar (GPR) in bridge deck monitoring and assessment
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Applications of ground penetrating radar (GPR) in bridge deck monitoring and assessment

机译：探地雷达在桥面监测与评估中的应用

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摘要

This paper presents the essence of two case studies by the authors on two major bridges in the UK. The first case study reports on the applications of GPR and associated work carried out on the Forth Road Bridge near Edinburgh, Scotland, with the main objective of identifying possible structural defects including damaged rebar and moisture ingress at specific locations of the bridge deck. The second case study focuses on a full assessment of the Pentagon Road Bridge, in Chatham, Kent, England with particular emphasis on the identification of possible defects including structural cracks within the deck structure and establishing the layout of the upper and lower rebar positions throughout the bridge. These studies present interesting results in terms of locations of rebar and an accurate estimate of concrete cover condition as well as reporting on a remarkable similarity in the processed data concerning areas affected by ingress of moisture within the deck structures of the two bridges under investigation. It is believed that this paper will be of particular interest to bridge engineers and structural engineering practitioners with enthusiasm for adopting non-destructive testing methods such as GPR in the health monitoring and assessment of bridge structures. The observed similarities in the processed data between the two reported case studies present an interesting concept within the general context of the interpretation of GPR data, with the potential for use in many other forthcoming cases. The paper also reports on the adopted method for the GPR survey with emphasis on difficulties and challenges encountered during the actual survey. The presented results benefit from advanced processing and presentation techniques.
机译：本文介绍了作者在英国的两个主要桥梁上进行的两个案例研究的实质。第一个案例研究报告了GPR的应用以及在苏格兰爱丁堡附近的福斯路大桥上进行的相关工作，其主要目的是确定可能的结构缺陷，包括损坏的钢筋和桥面特定位置的水分进入。第二个案例研究的重点是对位于英格兰肯特郡查塔姆的五角大楼公路大桥进行全面评估，特别着重于识别可能的缺陷，包括甲板结构内的结构裂缝，并确定整个桥梁上下钢筋位置的布局。桥。这些研究在钢筋的位置和混凝土覆盖状况的准确估计方面提供了有趣的结果，并报告了所研究的数据中受调查的两座桥的甲板结构内受湿气影响的区域的显着相似性。相信本文对于热衷于在桥梁结构的健康监测和评估中采用无损检测方法（例如GPR）的桥梁工程师和结构工程从业人员特别感兴趣。在两个报告的案例研究之间，在处理后的数据中观察到的相似性在解释GPR数据的一般背景下提出了一个有趣的概念，并有可能在其他许多即将发生的案例中使用。该文件还报告了GPR调查采用的方法，重点介绍了实际调查中遇到的困难和挑战。呈现的结果受益于先进的处理和呈现技术。

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