Hybrid Bridge Bents Using Post-tensioned Precast Columns for Accelerated Bridge Construction in High Seismic Regions

Seismic resilience of bridges improves safety and livability of communities. The State of Utah is likely to experience strong earthquakes. Successful completion of the project will ensure that the proposed method of constructing bridges will improve seismic resilience of bridges for strong earthquakes thus preserving the existing transportation system. The project investigates a bridge bent with self-centering precast concrete columns for Accelerated Bridge Construction (ABC) in high seismic regions. The proposed hybrid system consists of post-tensioned precast concrete columns in a two-column bridge bent with one or two Buckling Restrained Braces (BRBs) as external energy dissipation devices. The proposed activity involves testing and analysis of a bridge bent under cyclic loads built with the proposed system. It is expected that the precast columns will remain repairable after strong earthquakes. The BRB devices could be replaced after the earthquake whereas the gravity load bearing frame should remain undamaged.

• Record URL:
  https://www.mountain-plains.org/research/details.php?id=485

Language

• English

Project

• Status: Completed
• Funding: $236090
• Contract Numbers:

  69A3551747108

• Sponsor Organizations:

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590
• Managing Organizations:

  Mountain-Plains Consortium

  North Dakota State University
  Fargo, ND  United States  58108
• Project Managers:

  Tolliver, Denver

• Performing Organizations:

  University of Utah

  Department of Civil and Environmental Engineering
  110 Central Campus Drive Suite 2000
  Salt Lake City, UT  United States  84112
• Principal Investigators:

  Pantelides, Chris

• Start Date: 20190112
• Expected Completion Date: 20230731
• Actual Completion Date: 20221017
• USDOT Program: University Transportation Centers Program
• Source Data: MPC-588

Subject/Index Terms

• TRT Terms: Bents; Bridge construction; Buckling; Columns; Earthquake resistant design; Precast concrete; Repeated loads
• Geographic Terms: Utah
• Subject Areas: Bridges and other structures; Construction; Design; Highways; Materials;

Filing Info

• Accession Number: 01691229
• Record Type: Research project
• Source Agency: Mountain-Plains Consortium
• Contract Numbers: 69A3551747108
• Files: UTC, RIP
• Created Date: Jan 24 2019 8:48AM