ANALYSIS OF PLANE STRAIN CONSOLIDATION IN SATURATED CLAYS BY FINITE ELEMENT METHOD

THE PURPOSE IS TO DEVELOP A NUMERICAL TECHNIQUE, BASED ON FINITE ELEMENT APPROXIMATIONS, FOR SOLVING THE INITIAL-BOUNDARY-VALUE PROBLEMS IN THESE THEORIES, SO AS TO FACILITATE THEIR USE IN ANALYSING A WIDER VARIETY OF PLANE STRAIN CONSOLIDATION PROBLEMS. A SYSTEMATIC DEVELOPMENT OF THE THEORIES OF BIOT AND VERIGIN IS GIVEN WITHIN THE CONTEXT OF THE LINEAR MECHANICS OF SATURATED, DEFORMABLE, POROUS MEDIA. NUMERICAL APPROXIMATIONS OF THE INITIAL-BOUNDARY-VALUE PROBLEMS IN THESE THEORIES WERE THEN OBTAINED FROM THEIR VARIATIONAL CHARACTERIZATION BY THE FINITE ELEMENT METHOD. THE BIOT SOLUTION FOR CONSOLIDATION OF A SEMI-INFINITE CLAY LAYER SHOWED GOOD AGREEMENT WITH THE PUBLISHED CLOSED FORM SOLUTION FOR THE SAME PROBLEM. THE SOLUTION TECHNIQUE DEVELOPED IS THEN APPLIED TO THE STUDY OF PLANE STRAIN CONSOLIDATION IN SATURATED CLAY DEPOSITS OF FINITE DEPTH. THE BIOT SOLUTIONS IN CONTRAST TO THOSE OF VERIGIN, EXHIBIT THE EXPECTED MANDEL-CRYER EFFECT AT SMALL TIMES BUT THE DEFORMATIONS AND PORE PRESSURE PROGRESS AT A FASTER RATE THEREAFTER. COMPARISON BETWEEN VERIGIN'S SOLUTIONS FOR LAYERED AND HOMOGENEOUS DEPOSITS SHOW THAT LAYERING SIGNIFICANTLY INFLUENCES THE DEFORMATIONS AND PORE PRESSURES IN THE CONSOLIDATING SOIL AND IN CERTAIN CASES LEADS TO A BUILD UP OF PORE PRESSURES IN SOME ZONES OF THE SOIL AT THE EARLY STAGES OF THE CONSOLIDATION PROCESS. /AUTHOR/

  • Corporate Authors:

    Pittsburgh University, Pittsburgh

    Pittsburgh, PA  United States  15213

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    Pennsylvania Department of Transportation

    1215 Transportation and Safety Building
    Harrisburg, PA  United States  17120
  • Authors:
    • LEWIS, K H
    • Igharo, P
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00233743
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: Study No 68-2
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Feb 15 1972 12:00AM