Seismic Performance of Integral Connections between Cast-Inplace Substructures and Precast Concrete Superstructures

Widening of existing bridge structures or new bridge construction in heavily congested areas has become a necessity due to the increasing traffic demands on Nevada’s highway systems. A typical bridge system includes a continuous cast-in-place concrete superstructure with an integral substructure. The cast-in-place superstructure construction requires falsework over the traffic lanes, which can create significant construction delays and unsafe conditions for both the public and crew workers. Using a precast superstructure eliminates the need for falsework over the traffic lanes along with the associated time delays and potential hazards. The purpose of this study is to develop and examine integral connection details of precast superstructures with cast-in-place bent caps subjected to longitudinal seismic loading. Analytical modeling and experimental testing of four, 40 percent precast “U” girder specimens will be used to develop a design methodology for widening existing structures and constructing new bridges in heavily congested areas in Nevada where speed of construction is critical. The main parameters of this study are the magnitude of post-tensioning and the type of conventional reinforcement connection.

• Corporate Authors:

  National Concrete Bridge Council

  Portland Cement Association, 5420 Old Orchard Road
  Skokie, IL  United States  60077-1083
• Authors:
  • Almer, Kevin L
  • Sanders, David H
• Conference:
  • HPC: Build Fast, Build to Last. The 2006 Concrete Bridge Conference
  • Location: Reno NV, United States
  • Date: 2006-5-7 to 2006-5-10
• Publication Date: 2006

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; References;
• Pagination: 10p
• Monograph Title: HPC: Build Fast, Build to Last

Subject/Index Terms

• TRT Terms: Bridge construction; Bridge decks; Bridge substructures; Bridge superstructures; Bridges; Cast in place concrete; Posttensioning; Precast concrete; Seismicity
• Uncontrolled Terms: Analytical modeling; Construction delays; Seismic evaluations
• Geographic Terms: Nevada
• Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete;

Filing Info

• Accession Number: 01036153
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 27 2006 8:14AM