Large-Scale Biaxial Shake-Table Studies of a Precast Bridge Model
Publication: Journal of Structural Engineering
Volume 147, Issue 7
Abstract
Shake-table studies were conducted on a large-scale, two-span accelerated bridge construction (ABC) bridge model that incorporated 38 precast concrete elements and six emulative ABC connection types. The studies were aimed to assess the seismic performance of the bridge model and the six ABC connections under biaxial horizontal ground motions simulated at the Earthquake Engineering Laboratory at the University of Nevada, Reno. The bridge model was subjected to successive earthquake motions ranging from 20% to 200% of the design earthquake motion. Test results showed that the ABC bridge model matched the target performance of cast-in-place (CIP) bridges by limiting plastic hinging to columns and maintaining other components as damage-free. The ABC connections maintained the structural integrity of the system even under drift ratio demands on the columns higher than 7.5% combined with substantial in-plane rotation (e.g., larger than 0.008 rad) of the superstructure.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author by request.
Acknowledgments
This project was sponsored by the California Department of Transportation (Caltrans) under contract No. 65A0589. Additional funding was provided by the Fulbright Commission in Colombia and the Administrative Department of Science, Technology, and Innovation (Colciencias) through the scholarship awarded to the first author. LafargeHolcim, KIE-CON Inc. of Antioch, California, and C&K Johnson Industries, Inc. are thanked for the donations towards the construction of the bridge model. Partial support was also provided by ABC-UTC at the Florida International University. UNR Earthquake Engineering Laboratory staff members Dr. Patrick Laplace, Chad Lyttle, and Todd Lyttle are recognized by their dedicated assistance during the shake table testing.
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Published In
Journal of Structural Engineering
Volume 147 • Issue 7 • July 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: May 28, 2020
Accepted: Feb 25, 2021
Published online: May 10, 2021
Published in print: Jul 1, 2021
Discussion open until: Oct 10, 2021
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