Structural characterization of UHPC waffle bridge deck and connections.

Details

• Creators:
  Aaleti, Sriram ; Honarvar, Ebadollah ; Sritharan, Sri ; Rouse, Matt ; Wipf, Terry
• Corporate Creators:
  Iowa State University. Bridge Engineering Center
• Corporate Contributors:
  Iowa. Dept. of Transportation ; Iowa. Highway Research Board
• Subject/TRT Terms:
  • Bridge decks
  • Structural connection
  • Ultra high performance concrete
  • Bridge construction
  • Service life
  • Load tests
  • Rehabilitation (Maintenance)
  • Field tests
  • Laboratory tests
• Publication/ Report Number:
  IHRB Project TR-614
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa
• Corporate Publisher:
  Iowa State University. Institute for Transportation
• Abstract:
  The AASHTO strategic plan in 2005 for bridge engineering identified extending the service life of bridges and accelerating bridge ; construction as two of the grand challenges in bridge engineering. These challenges have the objective of producing safer and more ; economical bridges at a faster rate with a minimum service life of 75 years and reduced maintenance cost to serve the country’s ; infrastructure needs. Previous studies have shown that a prefabricated full-depth precast concrete deck system is an innovative technique ; that accelerates the rehabilitation process of a bridge deck, extending its service life with reduced user delays and community ; disruptions and lowering its life-cycle costs. Previous use of ultra-high performance concrete (UHPC) for bridge applications in the ; United States has been considered to be efficient and economical because of its superior structural characteristics and durability ; properties. ; Full-depth UHPC waffle deck panel systems have been developed over the past three years in Europe and the United States. ; Subsequently, a single span, 60-ft long and 33-ft wide prototype bridge with full-depth prefabricated UHPC waffle deck panels has been ; designed and built for a replacement bridge in Wapello County, Iowa. The structural performance characteristics and the constructability ; of the UHPC waffle deck system and its critical connections were studied through an experimental program at the structural laboratory ; of Iowa State University (ISU). Two prefabricated full-depth UHPC waffle deck (8 feet by 9 feet 9 inches by 8 inches) panels were ; connected to 24-ft long precast girders, and the system was tested under service, fatigue, overload, and ultimate loads. Three months ; after the completion of the bridge with waffle deck system, it was load tested under live loads in February 2012. The measured strain ; and deflection values were within the acceptable limits, validating the structural performance of the bridge deck. Based on the ; laboratory test results, observations, field testing of the prototype bridge, and experience gained from the sequence of construction ; events such as panel fabrication and casting of transverse and longitudinal joints, a prefabricated UHPC waffle deck system is found to ; be a viable option to achieve the goals of the AASHTO strategic plan.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28181/dot_28181_DS1.pdf
• File Type:
  [PDF - 6.84 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:324a21270f4be8bd76b945956432915c9050bf4048eecfecc1ffcb86ea208c6485ce6afacdaf20125c2dc6e33299fa2ae2907e22f96fdb7e9e5b02b2dae17208