Combined Flexure and Axial Load Performance of UHPC Piles

A combined experimental and analytical program will be used. The analytical program will perform moment-curvature analysis on candidate cross sections, force-deformation analysis on tested specimens, and expand the application of the experimental results to pile sizes larger than those that are physically tested. The experimental program will consist of 1/2 to 2/3 scale specimens tested under both strong and weak axis bending considering combined axial-flexural interaction. The testing program will consider three different load cases: proof axial load (failure load analysis would require smaller-scale specimens based on existing equipment), constant axial load plus monotonically increasing flexural load to failure in either a cantilever or third-point configuration and third-point bending load to failure without axial load as a control. Results will be compared with full-scale ultra high performance concrete (UHPC) pile flexural tests previously conducted at the SRC. Results will be used to revise/update the moment-axial pile interaction diagrams provided in the Florida Department of Transportation (FDOT) Standard Plan Instructions for UHPC piles, and provisions in the FDOT Structures Design Guidelines and FDOT Standard Specifications for Road and Bridge Construction.

Language

• English

Project

• Status: Active
• Funding: $285284
• Contract Numbers:

  BED26 977-15

• Sponsor Organizations:

  Florida Department of Transportation

  Research Center
  605 Suwannee Street MS-30
  Tallahassee, FL  United States  32399-0450
• Managing Organizations:

  Florida Department of Transportation

  Research Center
  605 Suwannee Street MS-30
  Tallahassee, FL  United States  32399-0450
• Project Managers:

  Iatsko, Olga

• Performing Organizations:

  University of Central Florida, Orlando

  12443 Research Parkway, Suite 207
  Orlando, FL  United States  32826-
• Principal Investigators:

  Mackie, Kevin

• Start Date: 20240422
• Expected Completion Date: 20260430
• Actual Completion Date: 0
• USDOT Program: Advanced Materials/Structural Safety

Subject/Index Terms

• TRT Terms: Axial loads; Flexural strength; Pile foundations; Test procedures; Ultra high performance concrete
• Subject Areas: Bridges and other structures; Maintenance and Preservation; Materials;

Filing Info

• Accession Number: 01920452
• Record Type: Research project
• Source Agency: Florida Department of Transportation
• Contract Numbers: BED26 977-15
• Files: RIP, STATEDOT
• Created Date: Jun 3 2024 2:36PM