You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    STP923

    Deformations and Pore Pressures Beneath Gravity Structures

    Published: 0


      Format Pages Price  
    PDF (176K) 11 $25   ADD TO CART
    Complete Source PDF (6.1M) 375 $55   ADD TO CART

    Cite this document

    X Add email address send
    X
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Abstract

    The paper describes an analytical method for predicting the stresses, displacements, and pore pressures beneath a gravity structure. The analysis is an application of the mechano-lattice technique, which considers linearized loading-unloading stress-strain relationships. It is noted, however, that those equivalent finite-element analyses using the elastic-plastic model or some other appropriate model, such as the model used in the mechano-lattice technique, would be equally applicable.

    The basic parameters of the analysis are the loading modulus EL and Poisson's ratio vL, and the unloading modulus EuL and Poisson's ratio vuL. The residual stresses after the passage of a single wave depend on the ratio of EuL to EL, termed the stiffness modulus KR.

    In the necessarily simplified procedure the dissipation of pore pressure over the period of the storm was neglected. A superposition procedure was adopted to predict the effects of N waves. An average value of residual strain per cycle obtained from repeated loading triaxial data was used to determine an appropriate value of EuL. The value of EL was considered to be constant.

    A comparison was made of the predicted values with corresponding experimental values of displacement and residual pore pressure that were obtained in a model test. Pore pressures developed under cyclic loading were 30% overestimated by the analysis, but the incremental displacements were closely predicted.

    Keywords:

    stress analysis, pore pressures, displacements, stress-strain curves, finite element


    Author Information:

    Lee, IK
    Professor and head, former graduate student, and senior lecturer, The University of New South Wales, Canberra, New South Wales

    Staunton, T
    Professor and head, former graduate student, and senior lecturer, The University of New South Wales, Canberra, New South Wales

    White, W
    Professor and head, former graduate student, and senior lecturer, The University of New South Wales, Canberra, New South Wales

    Yandell, WO
    Senior lecturer, The University of New South Wales, Kensington, New South Wales


    Committee/Subcommittee: D18.13

    DOI: 10.1520/STP18420S