Cyclic Response of Precast, Hollow Bridge Columns with Postpour Section and Socket Connection
Publication: Journal of Structural Engineering
Volume 148, Issue 1
Abstract
Accelerated bridge construction (ABC) has been used extensively to achieve rapid construction, to reduce traffic congestion and environmental impacts, and to ensure reliable quality control. Precast columns are typically precast with a solid section and then inserted into a socket foundation that is deeper than the maximum dimensions of the column section. To reduce the weight of the precast column and foundation for easy transportation and assembly, an alternative solution was proposed that uses a hollow section column with high-strength concrete and a foundation with a shallow socket. After the column was erected, postpour concrete (PPC) was then poured into the hollow column to a certain depth to strengthen the shear capacity in the plastic hinge region. Two precast columns with different depths of the PPC were investigated experimentally by cyclic loading test and were compared with a cast-in-place (CIP) reference column. The cyclic loading test results showed that the precast, hollow, high-strength concrete column with socket connection exhibited emulative seismic performance of the CIP reference. A deeper PPC section shows to improve the energy-dissipating capacity of the precast column. The effect of the PPC depth on the precast column and footing was investigated both experimentally and numerically.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available from the corresponding author by request.
Acknowledgments
This study is supported by the Science & Technology Department of Sichuan Province (Grant No. 2016HH0036), the National Natural Science Foundation of China (Grant No. 51678490), the National Science Fund for Distinguished Young Scholars (51525804), and China-Indonesia Joint Research Center for High-speed Railway Technology (Grant No. KY201801005).
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Published In
Journal of Structural Engineering
Volume 148 • Issue 1 • January 2022
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Jul 13, 2020
Accepted: Aug 26, 2021
Published online: Oct 25, 2021
Published in print: Jan 1, 2022
Discussion open until: Mar 25, 2022
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