FIELD TESTING OF DRILLED SHAFTS TO DEVELOP DESIGN METHODS

DRILLED SHAFTS ARE IMPORTANT FOUNDATION ELEMENTS WITH MANY PURPOSES, BUT THEY ARE USED PRIMARILY TO RESIST AXIAL LOADS. A PLAN OF RESEARCH IS DESCRIBED TO INVESTIGATE THE LOAD CARRYING CAPACITY OF SUCH SHAFTS BY FIELD TESTS INCLUDING THE FOLLOWING IMPORTANT STEPS: (1) DEVELOPING INSTRUMENTATION TO OBTAIN INFORMATION ON THE INTERACTION OF THE SOIL AND THE SHAFT, (2) PERFORMING LOAD TESTS ON A FULL SCALE DRILLED SHAFT, (3) DETERMINING SOIL PROPERTIES, (4) USING FIELD AND LABORATORY TESTS TO DEVELOP A THEORY OF DRILLED SHAFT BEHAVIOR, (5) RUNNING ADDITIONAL FIELD TESTS TO VERIFY THE THEORY, AND (6) TRANSLATING THE THEORY INTO A PROCEDURE FOR DESIGN. A GENERAL DESCRIPTION IS GIVEN OF SOME PRELIMINARY TESTS CONDUCTED AT A SITE IN AUSTIN, TEXAS, AND DEVELOPMENT OF INSTRUMENTATION AND INSTRUMENTATION PROBLEMS ARE DISCUSSED. A PRELIMINARY METHOD OF EVALUATING SOIL STRENGTH, INCLUDING THE INTERACTION OF SOIL AND WET CONCRETE, IS PRESENTED. A TECHNIQUE FOR APPLYING THIS INFORMATION TO DESIGN IS DISCUSSED. A PRELIMINARY DESIGN METHOD WHICH COMBINES ALL THE INFORMATION DEVELOPED TO DATE IS PRESENTED FOR FURTHER STUDY. /AUTHOR/

  • Supplemental Notes:
    • Hpr, Study IDENT NO 3-5-65-89-1
  • Corporate Authors:

    University of Texas, Austin

    Cockrell Hall
    Austin, TX  United States  78712

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  United States  20590
  • Authors:
    • Reese, L C
    • Hudson, W R
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00230661
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS
  • Created Date: Aug 15 2004 2:20AM