Design Guidance for UHPC Connections of Precast Girders Made Continuous for Live Load

Use of continuous bridge spans can reduce the required section size and can improve bridge durability by reducing the number of deck joints. If not detailed and constructed properly, continuity connections for precast concrete girders using conventional concrete tend to crack from the bottom due to moments resulting from creep and shrinkage effects in the girders. Ultra-high performance concrete (UHPC) has been successfully used in multiple applications related to connection of precast concrete bridge components and is frequently used in accelerated bridge construction In general, joints replaced or connections made using UHPC will have better durability and will allow for a smaller quantity of material to be used while still obtaining adequate load transfer between connected components. Previous research has shown that connections of precast girders for live load continuity using UHPC are a promising alternative to conventional connections. However, more comprehensive design guidance for continuity connections made with UHPC is needed for a variety of precast concrete bridge configurations.

• Record URL:
  https://abc-utc.fiu.edu/research-projects/design-guidance-for-uhpc-connections-of-precast-girders-made-continuous-for-live-load/

Language

• English

Project

• Status: Active
• Funding: $44,999
• Contract Numbers:

  69A3551747121

• Sponsor Organizations:

  Accelerated Bridge Construction University Transportation Center (ABC-UTC)

  Florida International University
  10555 W. Flagler Street
  Miami, FL  United States  33174

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590
• Principal Investigators:

  Floyd, Royce

  Volz, Jeffery

• Start Date: 20210301
• Expected Completion Date: 20230804
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Bridge construction; Continuous girder bridges; Girders; Guidelines; Live loads; Precast concrete; Structural connection; Training; Ultra high performance concrete
• Subject Areas: Bridges and other structures; Construction; Design; Highways; Materials;

Filing Info

• Accession Number: 01766550
• Record Type: Research project
• Source Agency: Accelerated Bridge Construction University Transportation Center (ABC-UTC)
• Contract Numbers: 69A3551747121
• Files: UTC, RIP
• Created Date: Mar 9 2021 11:20AM