Evaluation of Pile Capacities under Local Scoured Conditions
Publication: Geo-Congress 2024
ABSTRACT
Local scour occurs around pile foundations supporting bridges and marine structures due to currents and waves, which can severely undermine the performance of piles in extreme weather events such as floods and hurricanes. A scour hole is often developed around the pile foundation by local scour. In general design practice for pile foundations, scour-hole dimensions are either completely ignored or simply considered but with different methods. This paper reviews the current methods available for the evaluation of the effects of scour-hole dimensions on pile axial and lateral capacities. These methods include the methods outlined in the US Federal Highway Administration Driven Piles and Drilled Shafts as well as the American Petroleum Institute. A case regarding piles in dense sands subjected to different scour-hole conditions was analyzed using these methods. The analyzed results were compared to the results from the three-dimensional continuum finite element analysis and analytical solutions. Based on the comparisons, the pros and cons of each method were discussed. Recommendations on selecting a proper method for the design were also given.
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Information & Authors
Information
Published In
Geo-Congress 2024
Pages: 480 - 490
History
Published online: Feb 22, 2024
ASCE Technical Topics:
- Analysis (by type)
- Bridge foundations
- Bridge tests
- Caissons
- Driven piles
- Engineering fundamentals
- Field tests
- Finite element method
- Foundation design
- Foundations
- Geotechnical engineering
- Hydraulic engineering
- Hydraulics
- Methodology (by type)
- Numerical methods
- Pile foundations
- Piles
- Scour
- Tests (by type)
- Three-dimensional analysis
- Water and water resources
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