NUMREICAL MODEL FOR LIQUEFACTION

A numerical model for sand deposits subjected to earthquakes is developed. The soil is idealized as a two-phase medium composed of water and a structural skeleton. The water is viscous and compressible,and its motion is described by a generalized Darcy's law. The skeleton is composed of incompressible granular solid particles, and is considered to be under constrained compression. The volume of the soil can be reduced by shearing strains. The model is composed of two interactive parts. The first part models the propagation of plane shear waves from the bedrock. The second part models the pressure wave propagation, which involves the movements of the two phases, the effective stress, and the pore-water pressure. The dependence of the constrained modulus of the skeleton upon the dynamic shear modulus and the dependence of the shearing properties upon the transient effective stress provide the coupling between the two parts of the model. /Author/

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  • Supplemental Notes:
    • Presented at ASCE Annual Convention and Exposition, Philadelphia, Pa., September 27-October 1, 1976.
  • Corporate Authors:

    American Society of Civil Engineers

    345 East 47th Street
    New York, NY  USA  10017-2398
  • Authors:
    • LIOU, C P
    • Streeter, V L
    • Richart Jr, F E
  • Publication Date: 1977-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00165367
  • Record Type: Publication
  • Report/Paper Numbers: ASCE 12998 Proceeding
  • Files: TRIS
  • Created Date: Mar 7 1978 12:00AM