Scouring Mechanism of Roadbeds at Curved Sections of River-Adjacent Highways
DOI:
https://doi.org/10.71222/p8ben179Keywords:
riverbend scour, highway roadbed stability, hydrodynamic–geotechnical interaction, monitoring and modeling, climate-resilient infrastructureAbstract
Highways constructed along river bends face heightened vulnerability to scour due to complex hydrodynamic behaviors, intensified outer-bank erosion, and highly erodible riverbank soils. This review synthesizes current knowledge on the flow structures at curved river sections, the mechanisms governing roadbed–river interactions, and the typical failure modes triggered by progressive scour. It further examines the key influencing factors—hydraulic, geometrical, geotechnical, and anthropogenic—that collectively determine scour severity. Existing engineering protection techniques, modern monitoring tools, and advanced numerical and physical modeling methods are evaluated to highlight their applicability and limitations. The review concludes by identifying emerging research priorities, including AI-based scour forecasting, fully coupled hydro–geotechnical–structural modeling, climate-resilient design strategies, and ecological protection approaches. Overall, this study provides an integrated understanding of scour processes affecting river-adjacent highway roadbeds and offers guidance for more resilient and sustainable infrastructure development.References
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