Development of a precast bridge deck overhang system for the rock creek bridge.

Details

• Alternative Title:
  Project title: Development of a precast bridge deck overhang
• Creators:
  Trejo, David ; Hite, Monique ; Mander, John ; Mander, Thomas ; Henley, Mathew ; Scott, Reece ; Ley, Tyler ; Patil, Siddharth
• Corporate Creators:
  Texas Transportation Institute
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office
• Subject/TRT Terms:
  • Bridge decks
  • Precast concrete
  • Prestressed concrete
  • Prestressed concrete bridges Precast
  • Prestressed
  • Bridge Overhang
  • Grout
  • Constructability
  • Bridge Deck Panel
• Publication/ Report Number:
  FHWA/TX-08/0-6100-2
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  Technical report; Oct. 2007-June 2008.
• Corporate Publisher:
  Texas Transportation Institute
• Abstract:
  Precast, prestressed panels are commonly used at interior beams for bridges in Texas. The use of these ; panels provides ease of construction, sufficient capacity, and good economy for the construction of ; bridges in Texas. Current practice for the overhang deck sections requires that formwork be constructed. ; The cost of constructing the bridge overhang is significantly higher than that of the interior sections ; where precast panels are used. The development of a precast overhang system has the potential to ; improve economy and safety in bridge construction. This research investigated the overhang and shear ; capacity of a precast overhang system for potential use in the Rock Creek Bridge in Parker County, ; Texas. Grout material characteristics for the haunch and constructability issues were also addressed. ; Results indicate that the capacity of the precast overhang system is sufficient to carry factored AASHTO ; loads with no or very limited cracking. Results from the shear study indicate that the shear capacity of ; threaded rods and threaded rods with couplers is lower than the conventional R-bar system. However, ; modifications of the initial design and layout for the end panels should provide sufficient capacity. A ; commercial grout has been identified for use in the haunch zone. A recommendation for the haunch ; form system for use on the bridge is also provided.
  More +
• Format:
  PDF
• Funding:
  Project 0-6100
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16865/dot_16865_DS1.pdf
• File Type:
  [PDF - 4.74 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:b567e094f3ff16e9f8cda801c5148f0ccf2b9f83d4548770cebd6f5591255ad90866c14166157d764032fc26593ea3e586c4ad4c38e124c446160dd27568e73b