Enhanced Camber Calculations for Prestressed Concrete Bridge Girders

Like many State Departments of Transportation, Missouri Department of Transportation (MoDOT) has been utilizing prestressed concrete I-girders in bridge construction for quite some time. Similarly, like other DOTs, MoDOT has observed issues of late with increased occurrences of negative camber in completed prestressed concrete bridges. Positive bridge camber in prestressed concrete I-girders is a critical design component in the ride, appearance, maintenance requirements and overall life of a concrete superstructure bridge. There are a variety of components that go into the final camber of prestressed concrete girders, including the initial calculation, casting and release, shipping and eventual loading with the deck components. MoDOT is actively exploring new ways to improve the efficiency, constructability and overall performance of bridge replacements and new construction. An enhanced girder camber calculation, taking into account many different factors and lessons learned over the years, will be a primary deliverable from this project.

Language

• English

Project

• Status: Active
• Funding: $79999
• Contract Numbers:

  TR202101

• Sponsor Organizations:

  Missouri Department of Transportation

  1617 Missouri Boulevard
  P.O. Box 270
  Jefferson City, MO  United States  65102
• Project Managers:

  Martin, Ryan

• Performing Organizations:

  Missouri Center for Transportation Innovation

  Lafferre Hall
  416 S 6th St.
  Columbia, Missouri  United States  65201
• Principal Investigators:

  Orton, Sarah

• Start Date: 20200908
• Expected Completion Date: 20211217
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Bridge design; Calculation; Curvature; Girders; Prestressed concrete bridges
• Subject Areas: Bridges and other structures; Construction; Design; Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 01755373
• Record Type: Research project
• Source Agency: Missouri Department of Transportation
• Contract Numbers: TR202101
• Files: RIP, STATEDOT
• Created Date: Oct 26 2020 11:59AM