VIBRATION IN SATURATED SAND LAYERS

THE STATIONARY ACCELERATION RESPONSES OF LAYERS WERE OBTAINED FROM THE VIBRATION TESTS OF SATURATED SAND LAYERS ON THE ELECTRO-DYNAMIC TYPE VIBRATION TABLE. BY APPLYING THE SHEAR VIBRATION THEORY WITH UNIFORM RIGIDITY TO THEM, VALUES OF SHEAR WAVE VELOCITY AND DAMPING CONSTANT WERE EVALUATED AND THE VARIATION IN THESE VALUES WITH INCREASING DEFORMATION OF THE SAND LAYER DURING VIBRATION WAS EXAMINED. VALUES OF RIGIDITY ARE FOUND TO BE STRONGLY DEPENDENT ON THE EFFECTIVE OVERBURDEN PRESSURE, AND THE VIBRATIONAL CHARACTERISTICS OF SATURATED SAND LAYERS IS APPROXIMATELY EQUIVALENT TO THAT OF DRY SAND LAYERS IN A SMALL DEFORMATION RANGE, ASSUMING SAND GRAINS TO MOVE COMPLETELY TOGETHER WITH WATER AND THE RIGIDITY CORRESPONDING TO THE EFFECTIVE OVERBURDEN PRESSURE TO BE USED. WHILE IN A LARGE DEFORMATION RANGE, THE RIGIDITY DECREASES RAPIDLY DUE TO PORE WATER PRESSURE EFFECTS. THESE RESULTS ARE ALSO RE-EXAMINED USING THE SHEAR VIBRATION THEORY WITH LINEARLY- VARYING RIGIDITY. /RRL(A)/

  • Supplemental Notes:
    • Vol 8, No 1, PP 86-122, FIGS, 8 TAB, 21 PHOT, 12 REF
  • Corporate Authors:

    Transportation Ministry /Japan

    /Port and Harbour Res Institute
    ,   USA 
  • Authors:
    • Arai
    • Umehara, Y
  • Publication Date: 1969-3

Subject/Index Terms

Filing Info

  • Accession Number: 00235136
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Aug 15 1971 12:00AM