Cyclic Performance of Steel Plate–Reinforced High Toughness–Concrete Coupling Beams with Different Span-to-Depth Ratios
Publication: Journal of Structural Engineering
Volume 144, Issue 10
Abstract
In coupled shear wall or core wall systems, reinforced-concrete (RC) coupling beams are crucial to the seismic performance of the overall structure. These coupling RC beams, however, tend to undergo brittle shear failure, especially those with a small span-to-depth ratio (i.e., deep coupling beams). In this paper, an alternative RC coupling beam with high seismic resistance and high ductile behavior is proposed. The coupling beam is made of high-toughness concrete reinforced with an embedded vertical steel plate as well as steel bars. Three proposed steel plate–reinforced high toughness–concrete (PRHTC) coupling beams with different span-to-depth ratios (, 1.5, and 2.0) were tested. All three PRHTC coupling beams behaved in a ductile manner with good hysteretic behavior and large energy-dissipating capacity. Both the embedded steel plates and the high-toughness concrete contributed greatly to the high performance of the PRHTC coupling beams. The test results also show that load-carrying capacity of the PRHTC coupling beams increases as the span-to-depth ratio decreased whereas deformation ductility remains stable.
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Acknowledgments
This work was supported by the China Postdoctoral Science Foundation (Grant No. 2015M581937), the Major Project on Science and Technology of Fujian Province, China (Grant No. 2015Y4007), the National Natural Science Foundation of China (Grant Nos. 51308236 and 51622811), and the Natural Science Foundation of Fujian Province, China (Grant No. 2015J01208). It was also supported by the Promotion Program for Young and Middle-Aged Teachers in Science and Technology Research of Huaqiao University (Grant No. ZQN-PY514).
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Published In
Journal of Structural Engineering
Volume 144 • Issue 10 • October 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Aug 10, 2017
Accepted: Apr 11, 2018
Published online: Jul 10, 2018
Published in print: Oct 1, 2018
Discussion open until: Dec 10, 2018
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