Seismic Bearing Capacity of Eccentrically and Obliquely Loaded Strip Footings on Geosynthetic-Reinforced Soil
Publication: International Journal of Geomechanics
Volume 23, Issue 6
Abstract
The paper aims to evaluate the pseudostatic seismic bearing capacity of shallow foundations on geosynthetic-reinforced granular soil subjected to inclined/eccentric combined loading. This is achieved through a comprehensive set of lower-bound finite-element limit analysis (LB FELA) simulations adopting the second-order cone programming. The pseudostatic seismic loading is incorporated into the element equilibrium equations as body forces. Both sliding and structural modes of geosynthetic failure are simulated within the FELA framework. The influences of pseudostatic acceleration, embedment depth (u), and the ultimate tensile strength (Tu) of the reinforcement layer on the failure mechanism, bearing capacity ratio, and failure envelope of the overlying obliquely/eccentrically loaded shallow foundation are thoroughly investigated and discussed. It is generally concluded that at a given reinforcement embedment depth, failure envelopes shrink substantially with the increase of the seismic horizontal acceleration and the reduction of the geosynthetic ultimate tensile strength.
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Information & Authors
Information
Published In
International Journal of Geomechanics
Volume 23 • Issue 6 • June 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Aug 14, 2022
Accepted: Dec 12, 2022
Published online: Mar 21, 2023
Published in print: Jun 1, 2023
Discussion open until: Aug 21, 2023
ASCE Technical Topics:
- Analysis (by type)
- Continuum mechanics
- Dynamic loads
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Failure analysis
- Finite element method
- Foundation design
- Foundations
- Geomaterials
- Geosynthetics
- Geotechnical engineering
- Load bearing capacity
- Material mechanics
- Material properties
- Materials engineering
- Methodology (by type)
- Numerical methods
- Seismic loads
- Seismic tests
- Shallow foundations
- Solid mechanics
- Strength of materials
- Structural dynamics
- Tensile strength
- Tests (by type)
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