Continuous prestressed concrete girder bridges, volume 2 : analysis, testing, and recommendations.

Details

• Creators:
  Hueste, Mary Beth D. ; Mander, John B. ; Baie, Reza ; Parkar, Anagha S. ; Prouty, Jennifer Michelle ; Sarremejane, Tristan ; Parchure, Akshay
• Corporate Creators:
  Texas A&M Transportation Institute
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Girder bridges
  • Continuous girder bridges
  • Prestressed concrete bridges
  • Precast Prestressed Concrete
  • Spliced Girder Technology
  • Bridge Girders
  • Splice Connections
• Publication/ Report Number:
  FHWA/TX-15/0-6651-2
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Corporate Publisher:
  Texas Department of Transportation. Research and Technology Implementation Office
• Abstract:
  The Texas Department of Transportation designs typical highway bridge structures as simple span systems using ; standard precast, pretensioned girders. Spans are limited to about 150 ft due to weight and length restrictions on ; transporting the precast girder units from the prestressing plant to the bridge site. Such bridge construction, while ; economical from an initial cost point-of-view, may become somewhat limiting when longer spans are needed. This ; project focused on developing additional economical design alternatives for longer span bridges with main spans ; ranging from 150–300 ft, using continuous precast, prestressed concrete bridge structures with in-span splices. ; Phase 1 of this study focused on evaluating the current state-of-the-art and practice relevant to continuous precast ; concrete girder bridges and recommending suitable continuity connections for typical Texas bridge girders; the ; findings are documented in the Volume 1 project report. This report summarizes Phase 2 of the research including ; detailed design examples for shored and partially shored construction, results of a parametric design study, and ; results of an experimental program that tested a full-scale girder containing three splice connections. The parametric ; design study indicated that for bridges spanning from 150–300 ft, continuous precast, prestressed concrete girder ; bridges with in-span splices can provide an economical alternative to steel girder bridges and segmental concrete ; box girder construction. The tested splice connections performed well under service level loads. However, the lack ; of continuity of the pretensioning through the splice connection region had a significant impact on the behavior at ; higher loads approaching ultimate conditions. Improved connection behavior at ultimate conditions is expected ; through enhanced connection details. Recommendations for design of continuous spliced precast girders, along ; with several detailing suggestions are discussed in the report.
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• Format:
  PDF
• Funding:
  Project 0-6651
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/31691/dot_31691_DS1.pdf
• File Type:
  [PDF - 10.82 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:dfc8245db7e406ed4cfc73f1cce8cf49f3de8a762d500d386e12607f9759d4e5