Creep Behavior of Soil Nail Walls in High Plasticity Index (PI) Soils

The objective of this project is to investigate the creep behavior of soil nail walls in high-plasticity clays. Creep behavior depends mainly on load level. Field investigation, laboratory tests and numerical modeling will be used to study the effect of the load level on creep behavior of soil nails. Field studies will comprise: loading tests at National Geotechnical Experimental Site (NGES); and monitoring an actual soil nail wall to be selected by the Texas Department of Transportation (TxDOT). The tests at NGES will focus on creep behavior of soil nails in a natural clay deposit. It will comprise four soil nails to be installed; and around 10 existing tendons (installed in 1991). An actual soil nail wall (ideally in an embankment fill) will be tested and monitored for a long term. Laboratory tests will complement the information gathered from the field. Numerical models (based on limit state analysis and finite element method) will be calibrated with the information gathered from the experimental sites. Those models will be used to study in more details the behavior of soil nails in high plasticity clays. This will be done by simulating different field and operation conditions. Design guidelines for soil nail wall in high-plasticity clays will be prepared.

Language

  • English

Project

  • Status: Completed
  • Funding: $349640.00
  • Contract Numbers:

    0-6784

  • Sponsor Organizations:

    Texas Department of Transportation

    125 E. 11th Street
    Austin, TX  United States  78701-2483
  • Project Managers:

    Odell, Wade

  • Performing Organizations:

    Texas A&M Transportation Institute, College Station

    Texas A&M University System
    3135 TAMU
    College Station, TX  United States  77843-3135
  • Principal Investigators:

    Sanchez-Silva, Mauricio

  • Start Date: 20120912
  • Expected Completion Date: 0
  • Actual Completion Date: 20150831
  • Source Data: RiP Project 33845

Subject/Index Terms

Filing Info

  • Accession Number: 01567230
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 0-6784
  • Files: RiP, STATEDOT
  • Created Date: Jun 26 2015 1:01AM