Cyclic Loading Test for Exterior Beam–Column Joints of CEFT Columns
Publication: Journal of Structural Engineering
Volume 142, Issue 2
Abstract
A cyclic loading test was performed to investigate the seismic performance of exterior beam-column joints of concrete-encased-and-filled steel tubular (CEFT) columns. Two specimens with steel beams and two specimens with precast concrete (PC) beams were tested under cyclic loading. The dimensions of the column cross section were , which was a two-thirds-scale model of the prototype column. The test parameters for the steel beam and the PC beam were the beam depth (488 and 588 mm) and the flexural rebar ratio (1.1% and 1.5%), respectively. In the steel beam-CEFT column joints, continuity plates were used, while in the PC beam-CEFT column joints, couplers were used for the rebar connection. The steel beam-column connections failed due to early fracture of the continuity plate, and the PC beam-column connections failed due to rebar buckling and concrete spalling after beam yielding. The strength of the steel beam-column connections was evaluated using an existing design method, and the seismic performance of the PC beam-column connections was evaluated. On the basis of the test results, design considerations for beam-CEFT column joints were recommended.
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Acknowledgments
This research was financially supported by Shinsegae E&C. Authors are also grateful to grants from the High-Tech Urban Development Program (09 R&D A01) and the R&D Policy Infra Program (Code 11-Technology Standardization-09-01), funded by the Ministry of Land, Infrastructure, and Transport (MOLIT) of the Korean Government.
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Published In
Journal of Structural Engineering
Volume 142 • Issue 2 • February 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Jul 29, 2014
Accepted: Jul 14, 2015
Published online: Oct 16, 2015
Published in print: Feb 1, 2016
Discussion open until: Mar 16, 2016
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