Comparative study on shear failure behavior of squat high-strength steel reinforced concrete shear walls with various high-strength concrete materials

Chung Chan Hung, Ping Lun Hsieh

Research output: Contribution to journalArticle

Abstract

The shear failure behavior of four squat shear walls with high-strength steel (HSS) and high-strength concrete (HSC) was experimentally investigated in this study. The experimental variables are the steel grade, namely SD420 and SD785, and the type of HSC materials, namely commercially available HSC with the inclusion of steel fibers and ultra-high performance concrete (UHPC) with or without steel fibers. The squat walls were tested under displacement reversals and their cyclic responses were extensively compared using various performance measures. The results indicate that the addition of steel fibers in the squat walls transformed the shear critical damage pattern from significant concrete spalling to localized diagonal cracks. The HSS reinforced squat wall made using commercially available HSC with the addition of a 0.75% volume fraction of steel fibers had a load-displacement response, energy dissipation capacity, and shear strength comparable to those of the squat walls made using specially mixed UHPC containing a 1.5% volume fraction of steel fibers. Moreover, while the high-strength horizontal reinforcement in the squat non-fiber HSC did not yield until the end of the test, its yield strength was fully utilized when it was used in the fiber-reinforced HSC walls. In addition to the experimental study, the applicability of existing design codes and the softened strut-and-tie model for assessing the shear strength of the high-strength squat walls was evaluated.

Original languageEnglish
Pages (from-to)56-68
Number of pages13
JournalStructures
Volume23
DOIs
Publication statusPublished - 2020 Feb

Fingerprint

Shear walls
High strength steel
Reinforced concrete
Steel fibers
Concretes
High performance concrete
Shear strength
Volume fraction
Spalling
Struts
Yield stress
Energy dissipation
Reinforcement
Cracks
Steel
Fibers

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Safety, Risk, Reliability and Quality

Cite this

@article{42ad1a2adc224d28a7130089a6828fdf,
title = "Comparative study on shear failure behavior of squat high-strength steel reinforced concrete shear walls with various high-strength concrete materials",
abstract = "The shear failure behavior of four squat shear walls with high-strength steel (HSS) and high-strength concrete (HSC) was experimentally investigated in this study. The experimental variables are the steel grade, namely SD420 and SD785, and the type of HSC materials, namely commercially available HSC with the inclusion of steel fibers and ultra-high performance concrete (UHPC) with or without steel fibers. The squat walls were tested under displacement reversals and their cyclic responses were extensively compared using various performance measures. The results indicate that the addition of steel fibers in the squat walls transformed the shear critical damage pattern from significant concrete spalling to localized diagonal cracks. The HSS reinforced squat wall made using commercially available HSC with the addition of a 0.75{\%} volume fraction of steel fibers had a load-displacement response, energy dissipation capacity, and shear strength comparable to those of the squat walls made using specially mixed UHPC containing a 1.5{\%} volume fraction of steel fibers. Moreover, while the high-strength horizontal reinforcement in the squat non-fiber HSC did not yield until the end of the test, its yield strength was fully utilized when it was used in the fiber-reinforced HSC walls. In addition to the experimental study, the applicability of existing design codes and the softened strut-and-tie model for assessing the shear strength of the high-strength squat walls was evaluated.",
author = "Hung, {Chung Chan} and Hsieh, {Ping Lun}",
year = "2020",
month = "2",
doi = "10.1016/j.istruc.2019.11.002",
language = "English",
volume = "23",
pages = "56--68",
journal = "Structures",
issn = "2352-0124",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Comparative study on shear failure behavior of squat high-strength steel reinforced concrete shear walls with various high-strength concrete materials

AU - Hung, Chung Chan

AU - Hsieh, Ping Lun

PY - 2020/2

Y1 - 2020/2

N2 - The shear failure behavior of four squat shear walls with high-strength steel (HSS) and high-strength concrete (HSC) was experimentally investigated in this study. The experimental variables are the steel grade, namely SD420 and SD785, and the type of HSC materials, namely commercially available HSC with the inclusion of steel fibers and ultra-high performance concrete (UHPC) with or without steel fibers. The squat walls were tested under displacement reversals and their cyclic responses were extensively compared using various performance measures. The results indicate that the addition of steel fibers in the squat walls transformed the shear critical damage pattern from significant concrete spalling to localized diagonal cracks. The HSS reinforced squat wall made using commercially available HSC with the addition of a 0.75% volume fraction of steel fibers had a load-displacement response, energy dissipation capacity, and shear strength comparable to those of the squat walls made using specially mixed UHPC containing a 1.5% volume fraction of steel fibers. Moreover, while the high-strength horizontal reinforcement in the squat non-fiber HSC did not yield until the end of the test, its yield strength was fully utilized when it was used in the fiber-reinforced HSC walls. In addition to the experimental study, the applicability of existing design codes and the softened strut-and-tie model for assessing the shear strength of the high-strength squat walls was evaluated.

AB - The shear failure behavior of four squat shear walls with high-strength steel (HSS) and high-strength concrete (HSC) was experimentally investigated in this study. The experimental variables are the steel grade, namely SD420 and SD785, and the type of HSC materials, namely commercially available HSC with the inclusion of steel fibers and ultra-high performance concrete (UHPC) with or without steel fibers. The squat walls were tested under displacement reversals and their cyclic responses were extensively compared using various performance measures. The results indicate that the addition of steel fibers in the squat walls transformed the shear critical damage pattern from significant concrete spalling to localized diagonal cracks. The HSS reinforced squat wall made using commercially available HSC with the addition of a 0.75% volume fraction of steel fibers had a load-displacement response, energy dissipation capacity, and shear strength comparable to those of the squat walls made using specially mixed UHPC containing a 1.5% volume fraction of steel fibers. Moreover, while the high-strength horizontal reinforcement in the squat non-fiber HSC did not yield until the end of the test, its yield strength was fully utilized when it was used in the fiber-reinforced HSC walls. In addition to the experimental study, the applicability of existing design codes and the softened strut-and-tie model for assessing the shear strength of the high-strength squat walls was evaluated.

UR - http://www.scopus.com/inward/record.url?scp=85075507075&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85075507075&partnerID=8YFLogxK

U2 - 10.1016/j.istruc.2019.11.002

DO - 10.1016/j.istruc.2019.11.002

M3 - Article

AN - SCOPUS:85075507075

VL - 23

SP - 56

EP - 68

JO - Structures

JF - Structures

SN - 2352-0124

ER -