Clay and Shale LRFD Design Criteria for Drilled Shaft Foundations

The Texas Department of Transportation's (TxDOT) geotechnical design guidance has transitioned from using Texas Cone Penetrometer (TCP) boring logs and capacity correlations to design drilled shaft foundation elements with American Association of State Highway and Transportation Officials' Load and Resistance Factor Design (AASHTO LRFD) investigations and resistance-based design methods. The research team will optimize TxDOT's drilled shaft design methods and resistance factors for clay and shale in accordance with TxDOT's specific soil and construction conditions. The research team will develop a likelihood map of shale for a district selected by TxDOT.

• Record URL:
  • https://library.ctr.utexas.edu/Presto/project=0-7269

Language

• English

Project

• Status: Active
• Funding: $370,430.00
• Contract Numbers:

  0-7269

• Sponsor Organizations:

  Texas Department of Transportation

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

  Texas Department of Transportation

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

  Adediwura, Jade

• Performing Organizations:

  University of Texas at Arlington

  Box 19308
  Arlington, TX  United States  76019-0308

  University of Texas at San Antonio

  One UTSA Circle
  San Antonio, TX  United States  78249
• Principal Investigators:

  Yu, Xinbao

• Start Date: 20250901
• Expected Completion Date: 20270831
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Clay soils; Foundation engineering; Geological surveying; Geotechnical engineering; Load and resistance factor design; Optimization; Shale
• Geographic Terms: Texas
• Subject Areas: Bridges and other structures; Geotechnology; Highways;

Filing Info

• Accession Number: 01967589
• Record Type: Research project
• Source Agency: Texas Department of Transportation
• Contract Numbers: 0-7269
• Files: RIP, STATEDOT
• Created Date: Sep 29 2025 4:35PM