Interaction between Drilled Shafts and Mechanically Stabilized Earth (MSE) Walls

Due to space constraints, drilled shafts supporting superstructures are often constructed within MSE walls. The interaction between the drilled shafts and the MSE wall is not well known and not typically incorporated in the design. The objective of this project is to investigate this interaction and propose design guidelines. To do so, a field study of 3 sites and a series of numerical simulations will be performed. The field study will consist of instrumenting two TxDOT sites identified by TxDOT where the movements and pressures will be monitored. The third site will be the National Geotechnical Experimentation Site at Texas A&M University where two drilled shafts and an MSE wall will be built and instrumented and brought to failure. The numerical model will be calibrated against the large scale experiment. Then, simulations will extend the investigation to situations not covered by the field study. The parametric studies include cases where the drilled shafts affect the wall and vice versa. The load on the drilled shaft and the earth pressures to be resisted by the MSE wall will be quantify for each case. Based on the results of the field study and of the numerical simulations, design guidelines will be prepared.

Language

  • English

Project

  • Status: Completed
  • Funding: $409374.00
  • Contract Numbers:

    0-6715

  • Sponsor Organizations:

    Texas Department of Transportation

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

    Pete, Kevin

  • Performing Organizations:

    University of Texas, San Antonio

    6900 N. Loop 1604 W
    San Antonio, TX  United States 

    Texas A&M Transportation Institute, College Station

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

    Briaud, Jean-Louis

  • Start Date: 20100901
  • Expected Completion Date: 0
  • Actual Completion Date: 20150831
  • Source Data: RiP Project 39891

Subject/Index Terms

Filing Info

  • Accession Number: 01567089
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 0-6715
  • Files: RiP, STATEDOT
  • Created Date: Jun 24 2015 1:01AM