LRFD Design and Construction of Shallow Foundations for Highway Bridge Structures

Shallow foundations are used for a large percentage of bridges, retaining walls, and other transportation structures. Research is needed to develop reliability-based resistance factors and to incorporate those factors into design specifications. Transportation agencies across the nation will be using these specifications. LRFD design specifications for shallow foundations of highway structures should be developed using a reliability-based calibration procedure, consistent with the calibration of load and resistance factors for bridge superstructures. Load and resistance factors should account for uncertainties related to load combinations, site conditions, soil and rock type and properties, and methods of testing and analysis. It is believed that resistance factors for shallow foundations in Section 10 of the current AASHTO LRFD Bridge Design Specifications do not satisfy these requirements. The objective of this project was to develop recommended changes to Section 10 of the AASHTO LRFD Bridge Design Specifications for the strength limit state design of shallow foundations.

• Record URL:
  http://www.trb.org/TRBNet/ProjectDisplay.asp?ProjectID=730

Language

• English

Project

• Status: Completed
• Funding: $379344.00
• Contract Numbers:

  Project 24-31

• Sponsor Organizations:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  American Association of State Highway and Transportation Officials (AASHTO)

  444 North Capitol Street, NW
  Washington, DC  United States  20001

  National Cooperative Highway Research Program

  Transportation Research Board
  500 Fifth Street, NW
  Washington, DC  United States  20001
• Project Managers:

  Dekelbab, Waseem

• Performing Organizations:

  Geosciences Testing and Research Incorporated

  55 Middlesex Street, Suite 225
  North Chelmsford, MA  United States  01863-
• Principal Investigators:

  Paikowsky, Samuel

• Start Date: 20070130
• Expected Completion Date: 0
• Actual Completion Date: 20090731
• Source Data: RiP Project 11837

Subject/Index Terms

• TRT Terms: Bridge design; Bridges; Calibration; Design build; Foundations; Highways; Specifications; Structures
• Identifier Terms: National Cooperative Highway Research Program
• Subject Areas: Bridges and other structures; Construction; Highways;

Filing Info

• Accession Number: 01462924
• Record Type: Research project
• Source Agency: National Cooperative Highway Research Program
• Contract Numbers: Project 24-31
• Files: RiP, USDOT
• Created Date: Jan 3 2013 2:13PM