The test equipment, sample preparation, test procedure and results are presented and the analysis is described of a series of shake table tests carried out to observe the behavior of a 50 cm cubic model foundation resting on loose saturated sand deposits having relative densities of about 25 percent. It was found that at the time the settlement of the model box begins to occur, the pore pressure in the portion of the deposit away from the model is equal to the initial effective vertical stress, indicating the occurrence of liquefaction, but the pore pressure beneath the model box is always smaller in magnitude than that outside at the same depth, with a heavier model foundation yielding small pore pressures and vice versa. Settlemtn observations with and without liquefaction are recorded. It is concluded that the stability of foundations on uniform sand deposits is governed solely by the stability of the ground surrounding the foundations, irrespective of a margin of safety factor in the pre-earthquake conditions.

  • Corporate Authors:

    University of Tokyo

    Department of Civil Engineering
    7-3-1 Hongo, Bunkyo-ku
    Tokyo,   Japan  113-8656
  • Authors:
    • Ishihard, K
  • Publication Date: 1976

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00151957
  • Record Type: Publication
  • Report/Paper Numbers: Paper No. 7601
  • Files: TRIS
  • Created Date: Aug 31 1977 12:00AM