Hysteretic Behavior of Reinforced Concrete Coupling Beams According to Volume Fraction of Steel Fiber

Joo-Hong Chung, Dong-Hee Son, Su-Yong Kim, Baek-Il Bae and Chang-Sik Choi
Additional contact information
Joo-Hong Chung: Department of Architecture, Sahmyook University, Seoul 01795, Korea
Dong-Hee Son: Department of Architectural Engineering, Hanyang University, Seoul 04763, Korea
Su-Yong Kim: Department of Architectural Engineering, Hanyang University, Seoul 04763, Korea
Baek-Il Bae: Department of Digital Architectural and Urban Engineering, Hanyang Cyber University, Seoul 04763, Korea
Chang-Sik Choi: Department of Architectural Engineering, Hanyang University, Seoul 04763, Korea

Sustainability, 2020, vol. 13, issue 1, 1-17

Abstract: The purpose of this study was to evaluate the structural performance of steel fiber reinforced concrete (SFRC) coupling beams. Reversed cyclic loading tests were performed with full-scale specimens. The main variable for the tests was the volume fraction ratio of the steel fibers. The results showed that the maximum strength was increased by about 11% with 1% of steel fibers incorporated, and about 24% when the ratio of mixed fibers was doubled to 2%. Because numerous microcracks occurred, decreased crack width due to the bridge effect was observed with the steel fiber reinforcement. Increased diagonal tension crack angles and energy dissipation also appeared as the volume fraction of steel fibers increased. The contribution of shear to the total deformation was decreased while the contribution of rocking was increased as steel fibers were added. Considering the results of these experiments, it can be concluded that steel fiber reinforcement affects the deformation of coupling beams in various ways, and should be considered when estimating the effective stiffness of such beams when SFRC is introduced.

Keywords: reinforced coupling beam; steel fiber; deformation components; seismic performance (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/13/1/182/pdf (application/pdf)
https://www.mdpi.com/2071-1050/13/1/182/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:13:y:2020:i:1:p:182-:d:468986

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().