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mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Influence of cyclic loading on axially loaded piles in clay
  name:
    name part: Felio, Guy Y.
    name part: 1957-
    role:
      role term: creator
  name:
    name part: Briaud, Jean-Louis
    role:
      role term: degree supervisor.
  name:
    name part: Dunlap, Wayne A.
    role:
      role term: degree committee member.
  name:
    name part: Lytton, R. L.
    role:
      role term: degree committee member.
  name:
    name part: Walton, Jay R.
    role:
      role term: degree committee member.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  genre: Academic theses
  origin info:
    place:
      place term: xx
    date issued: 1985
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: 2 volumes (xxix, 454 leaves) : illustrations ; 29 cm
  abstract: This research work is related to the influence of cyclic loading on axially loaded piles in clay. A literature survey of cyclic laboratory shear tests on clay shows that: 1. slow undrained cyclic loading is more damaging than rapid loading, 2. cyclic soil behavior is related to a decrease in effective stress, 3. the threshold cyclic stress ratio beyond which large and rapid degradation occurs is generally below 60% of the ultimate static strength, and 4. cyclic loading does not produce significant reduction of undrained shear strength. For piles under cyclic vertical loads, the literature shows that: 1. excess pore pressures at the pile-soil interface do not increase during cyclic loading, 2. the degradation process is probably due mainly to the destruction of the soil structure at the soil pile interface, 3. a cyclic load threshold exists above which failure occurs, 4. this cyclic threshold averages 80% of the ultimate static capacity, and 5. Cyclic loading below the threshold does not produce a significant decrease in ultimate static capacity. Thirteen simple shear tests were performed on a low plasticity clay. These test confirmed most of the finding form the literature review and showed that: 1. a power law model for soil degradation in shear is appropriate up to the number of cycles tested (2000), 2. the power law exponent may be linearly related to the cyclic shear strain, 3. creep creates more damage than relaxation, and 4. relaxation creates more damage than strain controlled cyclic loading. Fifty eight rod shear test were performed on a low plasticity clay. These tests showed that: 1. at cyclic levels less than 0.4 times the static ultimate friction, stiffening of the load transfer curve occurs, 2. at cyclic levels between 0.4 and the cyclic threshold, limited degradation occurs followed by a stable behavior, 3. the cyclic threshold has a very precise value, 4. The cyclic threshold seems to correspond directly to the value of the residual soil pile friction…
  note: Typescript (photocopy).
  note: Vita.
  note: "Major subject: Civil Engineering."
  note: Ph. D. Texas A & M University 1985
  note: Includes bibliographical references (leaves 446-453).
  subject:
    topic: Piling (Civil engineering)
    topic: Testing
  subject:
    topic: Axial loads
  subject:
    topic: Major civil engineering
  identifier: http://hdl.handle.net/1969.1/Dissertations-449603
  identifier: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: http://hdl.handle.net/1969.1/Dissertations-449603
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  record info:
    record content source: TXA
    record creation date: 870427
    record change date: 20190325091812.0
    record identifier: in00000440935
    language of cataloging:
      language term: eng