High Performance Precast Concrete Bridge Deck System for the Skyline Bridge

This paper describes how most of the deficiency in existing stringer-type bridges is in the deterioration of the bridge deck. Cast-in-place (CIP) reinforced concrete decks experience cracking shortly after construction because of their large differential creep and shrinkage with the supporting beams, and because of the temperature drop they experience in the hydration cycle. The NUDECK (Nebraska University) system presented herein is a full-depth precast/prestressed concrete bridge deck panel system. The deck is pretensioned in the transverse direction and post-tensioned in the longitudinal direction. The combination of high performance precast concrete, where little creep and shrinkage occur after the deck is made composite with the beams, and two-way prestressing assure of continued pre-compression of the deck during its life. Construction time is greatly cut and the traveling public is least inconvenienced. Implementation of this new system in the design and construction of the Skyline Bridge, at 198th Skyline Drive and West Dodge Street in Omaha, Nebraska is given. The bridge consists of two spans, 89 ft and 125 ft, a 25-degree skew. Girder spacing is 10 ft-10 in. A typical precast deck panel is 7 ft-long, 56.8 ft-wide (full bridge width), and 6 in.-thick. The steel beams are made composite with the deck panel through 1 1/4 in. diameter studs, which have twice the capacity of 7/8 in. standard diameter studs. The joints between the panels are grouted using flowable concrete. The longitudinal gap over beams and 2 in. composite overlay are filled with Type K cement, shrinkage compensating, concrete mix. This paper presents the production and erection of the panels. This deck system can also be used efficiently for concrete girder bridges.

• Corporate Authors:

  National Concrete Bridge Council

  Portland Cement Association, 5420 Old Orchard Road
  Skokie, IL  United States  60077-1083
• Authors:
  • Sun, Chuanbing
  • Tadros, Maher K
  • Lafferty, Mark
  • Fallaha, Sam
• Conference:
  • The 2004 Concrete Bridge Conference
  • Location: Charlotte NC, United States
  • Date: 2004-5-17 to 2004-5-18
• Publication Date: 2004

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; Photos; References;
• Pagination: 12p
• Monograph Title: Building a New Generation of Bridges

Subject/Index Terms

• TRT Terms: Bridge decks; Cast in place concrete; Cast in place structures; Cracking; Creep; High performance concrete; Precast concrete; Reinforced concrete; Reinforced concrete bridges; Shrinkage
• Uncontrolled Terms: Type K cement
• Geographic Terms: Omaha (Nebraska)
• Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete;

Filing Info

• Accession Number: 01036244
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 27 2006 8:14AM