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首页> 外文会议>Airfield and Highway Pavement Specialty Conference; 20060430-0503; Atlanta,GA(US) >Network-Level Pavement Structure Assessment Using Automated Processing of Ground Penetrating Radar (GPR) Data
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Network-Level Pavement Structure Assessment Using Automated Processing of Ground Penetrating Radar (GPR) Data

机译：使用自动探地雷达（GPR）数据进行网络级路面结构评估

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摘要

The Utah Department of Transportation is using Ground Penetrating Radar surveys to estimate asphalt pavement thickness for system level pavement condition evaluation and management. Data has been collected for about 3000 lane-miles over a three-year period. Existing asphalt pavement thickness information was not available to assist with the GPR interpretations. Following the surveys, some coring was done to evaluate the results. The presentation of the results from the GPR analysis has evolved into a plot of layer interface reflection depths at 2-foot intervals along the road length, and asphalt thickness interpretations at the mileposts. Using this presentation, the pavement engineer can visualize the layer structure and possible asphalt depths. This plot is used to assign a thickness range to an inventory field in a management database. Geophysical judgment of layer material type is required to interpret the asphalt thickness at mile posts, and engineering judgment is required to assign thickness ranges to 1-mile intervals using the reflection depth plots. If core data becomes available, it can be superimposed in this plot to update the identification of asphalt layers. An automated procedure was implemented to generate the significant layer interface reflections used for these plots. The coordinates of GPR scan locations taken every second during data collection are plotted in a Geographic Information System file. The raw data survey files are archived for future viewing and analysis. The paper describes the data collection and analysis procedures, the format of the data presentation, interpretation of the data, and the results of the core data evaluation.
机译：犹他州交通运输部正在使用探地雷达调查来估算沥青路面的厚度，以进行系统级路面状况的评估和管理。在三年期间，已收集了约3000个车道英里的数据。现有的沥青路面厚度信息无法用于GPR的解释。在调查之后，进行了一些取芯以评估结果。 GPR分析结果的表示已演变为沿道路长度每2英尺间隔的层界面反射深度图，以及里程碑处的沥青厚度解释图。使用此演示文稿，路面工程师可以可视化层结构和可能的沥青深度。该图用于将厚度范围分配给管理数据库中的库存字段。解释层英里处的沥青厚度需要对层材料类型进行地球物理判断，并且需要使用反射深度图将工程厚度确定为1英里间隔，以进行工程判断。如果核心数据可用，则可以将其叠加在该图中以更新沥青层的标识。实施了自动化程序以生成用于这些图的重要层界面反射。数据收集过程中每秒获取的GPR扫描位置的坐标被绘制在地理信息系统文件中。原始数据调查文件已存档，以供将来查看和分析。本文介绍了数据收集和分析程序，数据表示的格式，数据的解释以及核心数据评估的结果。

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