STP501: Obtaining Strength Profiles with Depth for Marine Soil Deposits Using Disturbed Samples

    Sangrey, DA
    Associate professor, School of Civil and Environmental Engineering, Cornell University, Ithaca, N. Y.

    Pages: 16    Published: Jan 1972


    Abstract

    Three methods are presented for predicting the undrained shear strength of marine soils using parameters obtained from tests on disturbed samples. The predictions are developed from (a) a rational approach using critical state soil mechanics, (b) an empirical relationship with plasticity index, and (c) an association with the liquidity index. A series of case studies are reviewed leading to the conclusion that the rational critical state approach leads to a conservative estimate of peak strength for all cases except the underconsolidated soil; the empirical method provides a reasonable prediction of peak strength for normally consolidated soils; and the use of liquidity index provides a close estimate of remolded strength.

    Keywords:

    marine geology, underwater environments, underwater structures, soils, consolidation, preconsolidation pressure, soil mechanics, plastic properties, liquid phases, cohesion, shear strength, compression, swelling, water pressure, drainage, loads (forces), grain size


    Paper ID: STP38797S

    Committee/Subcommittee: D18.05

    DOI: 10.1520/STP38797S


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