Bearing Capacity of Foundations over Rock Slopes–Slip Lines and FELA Solutions
Publication: International Journal of Geomechanics
Volume 24, Issue 10
Abstract
The ultimate bearing capacity of a strip footing placed horizontally over the edge of a sloping rock mass has been determined on the basis of the stress characteristics method (SCM) using the generalized Hoek–Brown yield criterion. The effect of footing–rock interface roughness on the results has also been analyzed. The problem has been solved, in addition, with the usage of the adaptive mesh–based finite-element limit analysis (FELA) method. The results are provided in the form of nondimensional bearing capacity factor as a function of different input material parameters for several slope inclinations. After analyzing all the results, an expression on the basis of the regression analysis has also been generated to compute the factor Nσ as a function of different input variables. The bearing capacity obtained from the SCM has been found to lie between the lower and upper bounds of the FELA, and the failure patterns from the two sets of analyses match quite closely with each other for both smooth and rough footings. The results are also found to be in good agreement with the existing solutions from the literature.
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Data Availability Statement
The data that support the findings from this study are available from the corresponding author upon request.
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Information & Authors
Information
Published In
International Journal of Geomechanics
Volume 24 • Issue 10 • October 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Aug 3, 2023
Accepted: Apr 29, 2024
Published online: Aug 7, 2024
Published in print: Oct 1, 2024
Discussion open until: Jan 7, 2025
ASCE Technical Topics:
- Analysis (by type)
- Design (by type)
- Engineering fundamentals
- Finite element method
- Footings
- Foundation design
- Foundations
- Geomechanics
- Geotechnical engineering
- Limit analysis
- Load bearing capacity
- Methodology (by type)
- Numerical analysis
- Numerical methods
- Rock masses
- Rock mechanics
- Shallow foundations
- Slopes
- Structural design
- Structural engineering
- Structural reliability
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