Pseudo-Static Stability Analysis of Ring Foundation
Publication: Geo-Congress 2024
ABSTRACT
Ring foundations provide better seismic performance over other foundations due to their inherent stiffness and even load distribution capabilities. This urges for the seismic stability analysis of these foundations. In the present study, the seismic stability of ring footing on homogeneous soil is performed by a pseudo-static approach. In this analysis, the foundation behavior is simulated as a rigid body. The seismic loads in this analysis are modeled as vertical and horizontal forces. The analysis is performed in ABAQUS Cae software where the Mohr-Coulomb plasticity model is used to model the soil. The effect of variation of the friction angle (ϕ) of the soil, seismic acceleration coefficient (kh and kv), and loading position on the ultimate bearing capacity in static, as well as seismic conditions, is also presented in this paper. Findings indicated that higher values of seismic acceleration coefficient correlated with diminished bearing capacity, while higher friction angles contributed to its enhancement. Maximum bearing capacity was obtained for the inner half-loaded ring out of all possible loading combinations considered here.
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REFERENCES
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Information & Authors
Information
Published In
Geo-Congress 2024
Pages: 212 - 221
History
Published online: Feb 22, 2024
ASCE Technical Topics:
- Continuum mechanics
- Design (by type)
- Dynamic loads
- Dynamics (solid mechanics)
- Earthquake engineering
- Engineering fundamentals
- Engineering mechanics
- Foundation design
- Foundations
- Geomechanics
- Geotechnical engineering
- Load bearing capacity
- Load distribution
- Seismic effects
- Seismic loads
- Seismic tests
- Soil dynamics
- Soil mechanics
- Solid mechanics
- Static loads
- Statics (mechanics)
- Structural design
- Structural dynamics
- Tests (by type)
- Vertical loads
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