Cyclic Behavior of Component Model of Composite Beam Subjected to Fully Reversed Cyclic Loading
Publication: Journal of Structural Engineering
Volume 145, Issue 4
Abstract
In the design of steel structures, composite effects of stud shear connectors are generally measured using ordinary push-out tests. Furthermore, based on those results, the evaluation formulas of the ultimate shear strength are given in design guidelines. However, a concrete slab is subjected to reversed stress during an earthquake, whereas existing tests consider only compressive stresses on concrete. The mechanical behavior in existing structures thereby might be different from that under compressive force alone. This research proposes a component model of a composite beam modeling the stress in actual buildings. Furthermore, cyclic loading tests were conducted on 14 specimens with different specifications of the stud shear connector, concrete, and rebar. The results showed that the ultimate shear strength is considerably lower than that under compressive stress. Consequently, this paper presents equations to assess structural performance precisely considering various influential factors of composite structures.
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Acknowledgments
This research was funded by a Grant-in-Aid for JSPS Fellows Grant No. 17J03340 “Establishment of Damage Control Design for Braced Steel Structures Considering Axial Forces Act on Beams” (Principal Investigator: Atsushi Suzuki) and a Grant from The Japan Iron and Steel Federation (Principal Investigator: Atsushi Suzuki). The experiments were supported by Dr. Sachi Furukawa and Kanako Abe. We extend our deepest gratitude for their sincere cooperation.
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Published In
Journal of Structural Engineering
Volume 145 • Issue 4 • April 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: May 31, 2018
Accepted: Oct 1, 2018
Published online: Feb 15, 2019
Published in print: Apr 1, 2019
Discussion open until: Jul 15, 2019
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