United States Department of Transportation
i
Self-Centering Bridge Bent for Accelerated Bridge Construction [Research Brief]
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2021-07-01
[PDF-271.70 KB]
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Abstract:The research addresses a new hybrid bridge system for ABC in seismic regions. Researchers investigated the connection of precast concrete elements with unbonded post-tensioned bars and SLAs and their seismic performance. They constructed a precast concrete bridge bent consisting of two footings, two columns, and a cap beam (the entire assembly is called a “bent”). This bridge bent was tested under quasi-static cyclic load. An experiment was carried out on a 42% scale precast, unbonded post-tensioned two-column bridge bent with external energy dissipators to evaluate its seismic and rocking behavior. The external energy dissipators were SLAs attached from the footings to the columns and the columns to the cap beam.
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