SOILS AND FOUNDATIONS
Print ISSN : 1341-7452
ESTIMATING MODULI AND FRICTION ANGLE FROM SELF-BORING PRESSUREMETER TESTS IN SAND
RAMESH C. GUPTA
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JOURNAL FREE ACCESS

2005 Volume 45 Issue 5 Pages 81-88

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Abstract

Self-boring pressuremeter test (SBPMT) data has been analyzed based on cylindrical cavity expansion method and dimensionless cylindrical cavity expansion factors (F"q) to determine angle of friction, rigidity index (Ir) and modulus of elasticity (E). Then, based on a hyperbolic model, secant modulus (Esf), secant modulus at 50 percent failure stresses (E50), and initial modulus (Ei) have been determined. Reasonable values of angle of friction, initial modulus (Ei), and secant modulus of deformation at failure (Esf) have been determined for sand deposits located in different geographical regions. The secant modulus (E50) determined by this method compares well with unload-reload modulus, Er, determined from unload-reload cycle of the SBPM tests.

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