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首页> 外文期刊>Journal of Performance of Constructed Facilities >Small-Format Aerial Photography for Highway-Bridge Monitoring
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Small-Format Aerial Photography for Highway-Bridge Monitoring

机译：用于公路桥梁监控的小型航空摄影

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摘要

Small-format aerial photography (SFAP) is a low-cost solution for bridge-surface imaging and is proposed as a remote bridge-inspection technique to supplement current bridge visual inspection. Providing top-down views, photos taken from airplanes flying at 305 m (1,000 ft) allow for the visualization of subinch (i.e., large) cracks and joint openings on bridge decks or highway pavements. An onboard global positioning system can help geo-reference images collected and allow automated damage detection. However, the site lighting, surrounding tree shades, and highway surface reflectivity may affect the quality of the images. Several examples of bridge evaluation using SFAP are presented to demonstrate the capability of remote sensing as an effective tool for bridge-construction monitoring and condition assessment. A deck condition rating technique for large crack detection is proposed to quantify the condition of the existing bridge decks.
机译：小幅航空摄影（SFAP）是一种用于桥梁表面成像的低成本解决方案，被提议作为远程桥梁检查技术来补充当前的桥梁视觉检查。从305 m（1,000 ft）飞行的飞机拍摄的照片提供自上而下的视图，可显示桥面板或高速公路人行道上的几英寸（即大）裂缝和接头开口。机载全球定位系统可以帮助收集的地理参考图像并允许自动损坏检测。但是，现场照明，周围的树荫和高速公路表面的反射率可能会影响图像的质量。介绍了使用SFAP进行桥梁评估的几个示例，以证明遥感功能是桥梁施工监测和状况评估的有效工具。提出了一种用于大裂缝检测的甲板状况评定技术，以量化现有桥梁甲板的状况。

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