Pressuremeter Correlations for Preconsolidated Clayby Ray E. Martin, Schnabel Engineering Associates, Richmond, VA, USA,
Edward G. Drahos, Schnabel Engineering Associates, Richmond, VA, USA,
Abstract: Conventional triaxial compression and consolidation tests are often utilized to obtain parameters for design of foundations. More recently, Menard pressuremeter test results have been used for foundation design. The paper presents correlations of undrained shear strength estimated from the pressuremeter limit pressure and unconsolidated-undrained triaxial tests, the constrained reload modulus from consolidation tests and the pressuremeter modulus, and the preconsolidation pressure and the pressuremeter creep pressure. The factor used to determine the undrained shear strength was estimated to be K//b equals 5. A re-analysis of the Richmond City Hall mat settlement has been performed to confirm the pressuremeter rheologic coefficient alpha equals 1 as suggested by Menard for preconsolidated clay soils.
Subject Headings: Triaxial tests | Soil pressure | Shear strength | Clays | Shear tests | Consolidated soils | Foundation design | Soil settlement
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