Lateral Drilled Shaft Response from Dilatometer Tests
Publication: GeoSupport 2004: Drilled Shafts, Micropiling, Deep Mixing, Remedial Methods, and Specialty Foundation Systems
Abstract
The procedures used for a successful Class "A" prediction are documented for the lateral load-displacement response of four drilled shafts (d = 0.914 m and L = 11 m) constructed in Piedmont residual sandy silts at the National Geotechnical Experimentation Site (NGES) near Opelika, Alabama. The approach was based on the results of flat plate dilatometer tests (DMT) to evaluate the lateral soil resistance (pu = p0) for determining the static capacity (Hu) and equivalent soil modulus (Es = ED) to represent stiffness within the context of elastic continuum solutions. A more generalized Class "C" approach is discussed using an approximate closed-form expression and data obtained from seismic dilatometer tests (SDMT), since the shear wave velocity provides a fundamental initial stiffness of the ground in terms of the small-strain shear modulus (Gmax).
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Copyright
© 2004 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Continuum mechanics
- Drilled pier foundations
- Drilled shafts
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Equipment and machinery
- Foundations
- Geomechanics
- Geotechnical engineering
- Load tests
- Material mechanics
- Material properties
- Materials engineering
- Measuring instruments
- Mechanical properties
- Seismic waves
- Shafts
- Shear modulus
- Shear waves
- Soil dilatancy
- Soil mechanics
- Soil modulus
- Soil properties
- Solid mechanics
- Tests (by type)
- Tunnels
- Waves (mechanics)
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