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Project Details

Title:Hybrid Bridge Bents Using Post-tensioned Precast Columns for Accelerated Bridge Construction in High Seismic Regions
Principal Investigators:Chris P. Pantelides
University:University of Utah
Grant #:69A3551747108 (FAST Act)
Project #:MPC-588
RH Display ID:15515
Keywords:bents, bridge construction, buckling, columns, earthquake resistant design, precast concrete, repeated loads


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.

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NDSU Dept 2880P.O. Box 6050Fargo, ND 58108-6050