Ground penetrating radar applied to subsurface culverts

The failures of culverts can result in water and soil loss the surrounding subsurface, leading to collapses. In densely constructed urban areas, buried are inaccessible invisible, making Ground Penetrating Radar (GPR) inspection a widely adopted nondestructive efficient method. Previous research has employed artificial intelligence automate GPR interpretation by identifying special radargram textures, but irregular responses degraded subsurface soils present challenge. Therefore, this study proposes method for preliminary diagnosing large-scale based on wave attributes. comprises three parts: (1) evaluating compactness estimating tortuosity at culvert top; (2) investigating moisture using attenuation rate responses; (3) overlaying results incompact moist pinpoint potential degradations. Two long-distance were inspected diagnosed proposed method, abnormal sections identified confirmed excavation evaluation. case studies indicate that quickly provide reference further in-depth investigation, thereby improving survey efficiency reducing workload narrowing investigation scope. Consequently, facilitate surveys safeguard system.