Shear Deformation of Steel Fiber-Reinforced Prestressed Concrete Beams

Jin Ha Hwang, Deuck Hang Lee, Hyunjin Ju, Kang Su Kim, Thomas H.K. Kang, Zuanfeng Pan

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Steel fiber-reinforced prestressed concrete (SFRPSC) members typically have high shear strength and deformation capability, compared to conventional prestressed concrete (PSC) members, due to the resistance provided by steel fibers at the crack surface after the onset of diagonal cracking. In this study, shear tests were conducted on the SFRPSC members with the test variables of concrete compressive strength, fiber volume fraction, and prestressing force level. Their localized behavior around the critical shear cracks was measured by a non-contact image-based displacement measurement system, and thus their shear deformation was thoroughly investigated. The tested SFRPSC members showed higher shear strengths as the concrete compressive strength or the level of prestress increased, and their stiffnesses did not change significantly, even after diagonal cracking due to the resistance of steel fibers. As the level of prestress increased, the shear deformation was contributed by the crack opening displacement more than the slip displacement. In addition, the local displacements around the shear crack progressed toward directions that differ from those expected by the principal strain angles that can be typically obtained from the average strains of the concrete element. Thus, this localized deformation characteristics around the shear cracks should be considered when measuring the local deformation of concrete elements near discrete cracks or when calculating the local stresses.

Original languageEnglish
Pages (from-to)53-63
Number of pages11
JournalInternational Journal of Concrete Structures and Materials
Volume10
DOIs
Publication statusPublished - Sep 1 2016
Externally publishedYes

Fingerprint

Steel fibers
Prestressed concrete
Shear deformation
Reinforced concrete
Cracks
Concretes
Shear strength
Compressive strength
Displacement measurement
Prestressing
Volume fraction
Stiffness
Fibers

Keywords

  • prestressed concrete
  • SFRPSC
  • shear
  • shear deformation
  • shear strength
  • steel fiber

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ocean Engineering

Cite this

Shear Deformation of Steel Fiber-Reinforced Prestressed Concrete Beams. / Hwang, Jin Ha; Lee, Deuck Hang; Ju, Hyunjin; Kim, Kang Su; Kang, Thomas H.K.; Pan, Zuanfeng.

In: International Journal of Concrete Structures and Materials, Vol. 10, 01.09.2016, p. 53-63.

Research output: Contribution to journalArticle

Hwang, Jin Ha ; Lee, Deuck Hang ; Ju, Hyunjin ; Kim, Kang Su ; Kang, Thomas H.K. ; Pan, Zuanfeng. / Shear Deformation of Steel Fiber-Reinforced Prestressed Concrete Beams. In: International Journal of Concrete Structures and Materials. 2016 ; Vol. 10. pp. 53-63.
@article{0377e4d9b0324058b2aeb52d74a705e0,
title = "Shear Deformation of Steel Fiber-Reinforced Prestressed Concrete Beams",
abstract = "Steel fiber-reinforced prestressed concrete (SFRPSC) members typically have high shear strength and deformation capability, compared to conventional prestressed concrete (PSC) members, due to the resistance provided by steel fibers at the crack surface after the onset of diagonal cracking. In this study, shear tests were conducted on the SFRPSC members with the test variables of concrete compressive strength, fiber volume fraction, and prestressing force level. Their localized behavior around the critical shear cracks was measured by a non-contact image-based displacement measurement system, and thus their shear deformation was thoroughly investigated. The tested SFRPSC members showed higher shear strengths as the concrete compressive strength or the level of prestress increased, and their stiffnesses did not change significantly, even after diagonal cracking due to the resistance of steel fibers. As the level of prestress increased, the shear deformation was contributed by the crack opening displacement more than the slip displacement. In addition, the local displacements around the shear crack progressed toward directions that differ from those expected by the principal strain angles that can be typically obtained from the average strains of the concrete element. Thus, this localized deformation characteristics around the shear cracks should be considered when measuring the local deformation of concrete elements near discrete cracks or when calculating the local stresses.",
keywords = "prestressed concrete, SFRPSC, shear, shear deformation, shear strength, steel fiber",
author = "Hwang, {Jin Ha} and Lee, {Deuck Hang} and Hyunjin Ju and Kim, {Kang Su} and Kang, {Thomas H.K.} and Zuanfeng Pan",
year = "2016",
month = "9",
day = "1",
doi = "10.1007/s40069-016-0159-2",
language = "English",
volume = "10",
pages = "53--63",
journal = "International Journal of Concrete Structures and Materials",
issn = "1976-0485",
publisher = "Springer Science + Business Media",

}

TY - JOUR

T1 - Shear Deformation of Steel Fiber-Reinforced Prestressed Concrete Beams

AU - Hwang, Jin Ha

AU - Lee, Deuck Hang

AU - Ju, Hyunjin

AU - Kim, Kang Su

AU - Kang, Thomas H.K.

AU - Pan, Zuanfeng

PY - 2016/9/1

Y1 - 2016/9/1

N2 - Steel fiber-reinforced prestressed concrete (SFRPSC) members typically have high shear strength and deformation capability, compared to conventional prestressed concrete (PSC) members, due to the resistance provided by steel fibers at the crack surface after the onset of diagonal cracking. In this study, shear tests were conducted on the SFRPSC members with the test variables of concrete compressive strength, fiber volume fraction, and prestressing force level. Their localized behavior around the critical shear cracks was measured by a non-contact image-based displacement measurement system, and thus their shear deformation was thoroughly investigated. The tested SFRPSC members showed higher shear strengths as the concrete compressive strength or the level of prestress increased, and their stiffnesses did not change significantly, even after diagonal cracking due to the resistance of steel fibers. As the level of prestress increased, the shear deformation was contributed by the crack opening displacement more than the slip displacement. In addition, the local displacements around the shear crack progressed toward directions that differ from those expected by the principal strain angles that can be typically obtained from the average strains of the concrete element. Thus, this localized deformation characteristics around the shear cracks should be considered when measuring the local deformation of concrete elements near discrete cracks or when calculating the local stresses.

AB - Steel fiber-reinforced prestressed concrete (SFRPSC) members typically have high shear strength and deformation capability, compared to conventional prestressed concrete (PSC) members, due to the resistance provided by steel fibers at the crack surface after the onset of diagonal cracking. In this study, shear tests were conducted on the SFRPSC members with the test variables of concrete compressive strength, fiber volume fraction, and prestressing force level. Their localized behavior around the critical shear cracks was measured by a non-contact image-based displacement measurement system, and thus their shear deformation was thoroughly investigated. The tested SFRPSC members showed higher shear strengths as the concrete compressive strength or the level of prestress increased, and their stiffnesses did not change significantly, even after diagonal cracking due to the resistance of steel fibers. As the level of prestress increased, the shear deformation was contributed by the crack opening displacement more than the slip displacement. In addition, the local displacements around the shear crack progressed toward directions that differ from those expected by the principal strain angles that can be typically obtained from the average strains of the concrete element. Thus, this localized deformation characteristics around the shear cracks should be considered when measuring the local deformation of concrete elements near discrete cracks or when calculating the local stresses.

KW - prestressed concrete

KW - SFRPSC

KW - shear

KW - shear deformation

KW - shear strength

KW - steel fiber

UR - http://www.scopus.com/inward/record.url?scp=84987905517&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84987905517&partnerID=8YFLogxK

U2 - 10.1007/s40069-016-0159-2

DO - 10.1007/s40069-016-0159-2

M3 - Article

AN - SCOPUS:84987905517

VL - 10

SP - 53

EP - 63

JO - International Journal of Concrete Structures and Materials

JF - International Journal of Concrete Structures and Materials

SN - 1976-0485

ER -