Study on Ground-Penetrating Radar (GPR) Application in Pavement Deep Distress Detection

• 作者: Chengchao Guo Songtao Li
• 来源期刊: 交通科技期刊(英文)
• 学科: 医学
• 关键词: PAVEMENT DEEP DISTRESS GPR Electromagnetic FORWARD Simulation Dielectric Model DETECTION
• 年，卷（期）: jtkjqkyw,（2）
• 页码范围: 232-259
• 页数: 28页
• 分类号: R73

摘要

As some deep distresses exist in pavement structures, ground-penetrating radar (GPR) reflected waves will vary at interfaces and defects. Aimed at detecting the distresses in terms of position, severity and degree, electromagnetic forward simulations based on 400 MHz and 900 MHz antennas were conducted respectively. The dielectric models concerning homogeneous or coupling distresses of pavements were established, and the effects of various distresses on detection were analyzed through reflected wave images. Relying on GPR tests and field tests, coring and excavation data acquired before rehabilitation were compared and verified. The calculation results match the field measurement results. Thus, the detection method based on GPR was proposed for pavement deep distresses.