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Large-Scale Testing of a Precast Bent for Accelerated Bridge Construction in Seismic Zones
Department: Civil & Environmental
ResourceLengthWidthThickness
Paper000
Specimen Elements
Pocatello
Unknown to Unknown
Jared Cantrell
Idaho State University
Thesis
No
6/8/2021
digital
City: Pocatello
Master
Accelerated Bridge Construction (ABC) has gained popularity around the United States in recent decades. ABC offers many advantages over traditional cast-in-place(CIP), such as reduced traffic disruption and rapid erection, among numerous others. Despite these advantages, application of ABC in seismic regions is still a challenge due to difficulties associated with developing equivalent response from precast connections as that of CIPduring seismic loading. In this research, a new precast pier system is proposed to emulate the traditional CIPseismic design (i.e. formation of plastic hinges during earthquakes). The precast elements are connected using fully encased concrete-filled steel tubes. Large-scale experimental testing of equivalent precast and CIP bents is carried out to investigate the seismic performance of the proposed pier system and to compare it against the traditional cast-in-place construction. Experimental results exhibit good performance of the precast connection when subjected to quasi-static cyclic loading. The performance of the precast connection during experimental testing of piers has outperformed the CIP benchmark specimen in ductility and strength. Key Words: Accelerated Bridge Construction; ABC; precast concrete; large-scale testing; seismic; bridges; concrete-filled steel tube; cast-in-place bent; precast bent

Large-Scale Testing of a Precast Bent for Accelerated Bridge Construction in Seismic Zones

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