Shaking Table Testing to Evaluate Effectiveness of Vertical Drains for Liquefaction Mitigation

Although blast liquefaction studies have shown that vertical drains greatly increase the rate of drainage under field conditions, they have not prevented liquefaction. In addition, it is difficult to compare pore pressure development during blasting and an earthquake. At present, no direct field or laboratory data is available to confirm whether or not the drains have the ability to limit pore pressures and resulting settlement to acceptable levels. However, shaking table tests can be conducted with a large shear box (20 ft high, 9 ft wide, 16 ft long) containing drains at State University of New York (SUNY), Buffalo and compared with identical testing currently underway for another funded study. Tests will be performed at progressively higher acceleration levels and durations to allow comparison of performance (pore pressure & settlement) for earthquake conditions. Perform shaking table tests on sandy soils with vertical drains installed to confirm whether or not the drains have the ability to limit pore pressures and resulting settlement to acceptable levels during the earthquake event. Three objectives are outlined for this study: (1) Evaluate the ability of vertical drains to prevent liquefaction during an earthquake event as a function of acceleration and duration. (2) Compare settlement of treated sand relative to untreated soil when subjected to shaking and drained with vertical drains. (3) Evaluate the accuracy of simple models and computer models to predict measured behavior.

Language

  • English

Project

  • Status: Active
  • Funding: $115000
  • Contract Numbers:

    138731

    TPF-5(244)

  • Sponsor Organizations:

    New York State Department of Transportation

    50 Wolf Road
    Albany, NY  United States  12232

    South Carolina Department of Transportation

    955 Park Street
    P.O. Box 191
    Columbia, SC  United States  29202-0191

    Utah Department of Transportation

    4501 South 2700 West
    Project Development
    Salt Lake City, UT  United States  84114-8380

    California Department of Transportation

    1120 N Street
    Sacramento, CA  United States  95814

    Alaska Department of Transportation and Public Facilities

    Research & Technology Transfer
    2301 Peger Road
    Fairbanks, AK  United States  99709-5399
  • Performing Organizations:

    Brigham Young University

    Provo, UT  United States  84602-4081
  • Principal Investigators:

    Rollins, Kyle

  • Start Date: 20130501
  • Expected Completion Date: 0
  • Actual Completion Date: 20160331
  • Source Data: RiP Project 29823

Subject/Index Terms

Filing Info

  • Accession Number: 01573318
  • Record Type: Research project
  • Source Agency: Federal Highway Administration
  • Contract Numbers: 138731, TPF-5(244)
  • Files: RiP
  • Created Date: Aug 22 2015 1:01AM