Structural response of steel-fiber-reinforced concrete beams under various loading rates

Jin Young Lee, Hyun Oh Shin, Doo Yeol Yoo, Young Soo Yoon

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

This study presents the rate-dependent structural behavior of reinforced concrete (RC) beams with and without steel fibers and stirrups. Three different loading rates, i.e., quasi-static, impact, and blast loading, were adopted, and three different volume fractions (vf) of hooked steel fibers, i.e., 0, 0.5, and 1%, were considered. The test results indicate that the addition of steel fibers enhanced the static, impact, and blast resistances of the RC beams in terms of higher load carrying capacity, higher energy absorption capacity, and lower maximum and residual displacements. However, the inclusion of 0.5 and 1 vol% steel fibers was insufficient to prevent brittle shear failure of the RC beams without stirrups. On the other hand, brittle shear failure was effectively prevented by incorporating stirrups. The beams including both 0.5 vol% steel fibers and stirrups demonstrated the highest performance, regardless of the strain rate in all the three loading conditions. Lastly, the static shear strengths of reinforced steel-fiber-reinforced concrete beams were effectively predicted based on Aoude's model, and the effectiveness of using steel fibers was greatest under the static loading condition, as compared with impact and blast loading conditions.

Original languageEnglish
Pages (from-to)271-283
Number of pages13
JournalEngineering Structures
Volume156
DOIs
Publication statusPublished - 2018 Feb 1

Fingerprint

Steel fibers
Reinforced concrete
Blast resistance
Impact resistance
Energy absorption
Load limits
Shear strength
Strain rate
Volume fraction

Keywords

  • Dynamic response factor
  • Reinforced concrete beam
  • Steel fiber
  • Stirrup
  • Strain rate

ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this

Structural response of steel-fiber-reinforced concrete beams under various loading rates. / Lee, Jin Young; Shin, Hyun Oh; Yoo, Doo Yeol; Yoon, Young Soo.

In: Engineering Structures, Vol. 156, 01.02.2018, p. 271-283.

Research output: Contribution to journalArticle

Lee, Jin Young ; Shin, Hyun Oh ; Yoo, Doo Yeol ; Yoon, Young Soo. / Structural response of steel-fiber-reinforced concrete beams under various loading rates. In: Engineering Structures. 2018 ; Vol. 156. pp. 271-283.
@article{d32589f7e05a4ffaa99eec975c7b0586,
title = "Structural response of steel-fiber-reinforced concrete beams under various loading rates",
abstract = "This study presents the rate-dependent structural behavior of reinforced concrete (RC) beams with and without steel fibers and stirrups. Three different loading rates, i.e., quasi-static, impact, and blast loading, were adopted, and three different volume fractions (vf) of hooked steel fibers, i.e., 0, 0.5, and 1{\%}, were considered. The test results indicate that the addition of steel fibers enhanced the static, impact, and blast resistances of the RC beams in terms of higher load carrying capacity, higher energy absorption capacity, and lower maximum and residual displacements. However, the inclusion of 0.5 and 1 vol{\%} steel fibers was insufficient to prevent brittle shear failure of the RC beams without stirrups. On the other hand, brittle shear failure was effectively prevented by incorporating stirrups. The beams including both 0.5 vol{\%} steel fibers and stirrups demonstrated the highest performance, regardless of the strain rate in all the three loading conditions. Lastly, the static shear strengths of reinforced steel-fiber-reinforced concrete beams were effectively predicted based on Aoude's model, and the effectiveness of using steel fibers was greatest under the static loading condition, as compared with impact and blast loading conditions.",
keywords = "Dynamic response factor, Reinforced concrete beam, Steel fiber, Stirrup, Strain rate",
author = "Lee, {Jin Young} and Shin, {Hyun Oh} and Yoo, {Doo Yeol} and Yoon, {Young Soo}",
year = "2018",
month = "2",
day = "1",
doi = "10.1016/j.engstruct.2017.11.052",
language = "English",
volume = "156",
pages = "271--283",
journal = "Engineering Structures",
issn = "0141-0296",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Structural response of steel-fiber-reinforced concrete beams under various loading rates

AU - Lee, Jin Young

AU - Shin, Hyun Oh

AU - Yoo, Doo Yeol

AU - Yoon, Young Soo

PY - 2018/2/1

Y1 - 2018/2/1

N2 - This study presents the rate-dependent structural behavior of reinforced concrete (RC) beams with and without steel fibers and stirrups. Three different loading rates, i.e., quasi-static, impact, and blast loading, were adopted, and three different volume fractions (vf) of hooked steel fibers, i.e., 0, 0.5, and 1%, were considered. The test results indicate that the addition of steel fibers enhanced the static, impact, and blast resistances of the RC beams in terms of higher load carrying capacity, higher energy absorption capacity, and lower maximum and residual displacements. However, the inclusion of 0.5 and 1 vol% steel fibers was insufficient to prevent brittle shear failure of the RC beams without stirrups. On the other hand, brittle shear failure was effectively prevented by incorporating stirrups. The beams including both 0.5 vol% steel fibers and stirrups demonstrated the highest performance, regardless of the strain rate in all the three loading conditions. Lastly, the static shear strengths of reinforced steel-fiber-reinforced concrete beams were effectively predicted based on Aoude's model, and the effectiveness of using steel fibers was greatest under the static loading condition, as compared with impact and blast loading conditions.

AB - This study presents the rate-dependent structural behavior of reinforced concrete (RC) beams with and without steel fibers and stirrups. Three different loading rates, i.e., quasi-static, impact, and blast loading, were adopted, and three different volume fractions (vf) of hooked steel fibers, i.e., 0, 0.5, and 1%, were considered. The test results indicate that the addition of steel fibers enhanced the static, impact, and blast resistances of the RC beams in terms of higher load carrying capacity, higher energy absorption capacity, and lower maximum and residual displacements. However, the inclusion of 0.5 and 1 vol% steel fibers was insufficient to prevent brittle shear failure of the RC beams without stirrups. On the other hand, brittle shear failure was effectively prevented by incorporating stirrups. The beams including both 0.5 vol% steel fibers and stirrups demonstrated the highest performance, regardless of the strain rate in all the three loading conditions. Lastly, the static shear strengths of reinforced steel-fiber-reinforced concrete beams were effectively predicted based on Aoude's model, and the effectiveness of using steel fibers was greatest under the static loading condition, as compared with impact and blast loading conditions.

KW - Dynamic response factor

KW - Reinforced concrete beam

KW - Steel fiber

KW - Stirrup

KW - Strain rate

UR - http://www.scopus.com/inward/record.url?scp=85035119138&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85035119138&partnerID=8YFLogxK

U2 - 10.1016/j.engstruct.2017.11.052

DO - 10.1016/j.engstruct.2017.11.052

M3 - Article

VL - 156

SP - 271

EP - 283

JO - Engineering Structures

JF - Engineering Structures

SN - 0141-0296

ER -