Experimental evaluation of cyclic loading test procedure including gravity load on RC beams

Research output: Contribution to journalArticle

Abstract

Test setups and loading histories aim to replicate the real conditions of the building structures. However, most of the tests on beams found in literature do not include gravity loads in the cyclic loading history. An experimental campaign was carried out. Two beam specimens, named CB0 and CB1, designed to exhibit different failure modes were subjected to a loading protocol that involved the imposition of reversed cyclic loading and simultaneous gravity load. The aim was to validate the test procedure for different beam failure modes. Consequently, specimen CB1 failed by rupture of the tensile reinforcing bars while specimen CB0 failed due to concrete crushing and buckling of the compressed reinforcing bars. Results show that the presented loading protocol does not control the failure mode of the specimens. The specimens were also simulated numerically, and the results were comparable with the experimental observations in terms of load capacities, crack patterns, and failure modes.

Original languageEnglish
JournalStructural Concrete
DOIs
Publication statusPublished - 1 Jan 2019

Fingerprint

Failure modes
Gravitation
Crushing
Buckling
Concretes
Cracks

Keywords

  • cyclic loading
  • failure mode
  • gravity load
  • numerical analyses
  • plastic hinges
  • reinforced concrete beam
  • reversing hinges
  • unidirectional hinges

Cite this

@article{7c4b4bfab78147268d93de4629c42089,
title = "Experimental evaluation of cyclic loading test procedure including gravity load on RC beams",
abstract = "Test setups and loading histories aim to replicate the real conditions of the building structures. However, most of the tests on beams found in literature do not include gravity loads in the cyclic loading history. An experimental campaign was carried out. Two beam specimens, named CB0 and CB1, designed to exhibit different failure modes were subjected to a loading protocol that involved the imposition of reversed cyclic loading and simultaneous gravity load. The aim was to validate the test procedure for different beam failure modes. Consequently, specimen CB1 failed by rupture of the tensile reinforcing bars while specimen CB0 failed due to concrete crushing and buckling of the compressed reinforcing bars. Results show that the presented loading protocol does not control the failure mode of the specimens. The specimens were also simulated numerically, and the results were comparable with the experimental observations in terms of load capacities, crack patterns, and failure modes.",
keywords = "cyclic loading, failure mode, gravity load, numerical analyses, plastic hinges, reinforced concrete beam, reversing hinges, unidirectional hinges",
author = "Helisa Muhaj and Carla March{\~a}o and V{\'a}lter L{\'u}cio and Rita Gi{\~a}o",
year = "2019",
month = "1",
day = "1",
doi = "10.1002/suco.201800255",
language = "English",
journal = "Structural Concrete",
issn = "1464-4177",
publisher = "Thomas Telford",

}

TY - JOUR

T1 - Experimental evaluation of cyclic loading test procedure including gravity load on RC beams

AU - Muhaj, Helisa

AU - Marchão, Carla

AU - Lúcio, Válter

AU - Gião, Rita

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Test setups and loading histories aim to replicate the real conditions of the building structures. However, most of the tests on beams found in literature do not include gravity loads in the cyclic loading history. An experimental campaign was carried out. Two beam specimens, named CB0 and CB1, designed to exhibit different failure modes were subjected to a loading protocol that involved the imposition of reversed cyclic loading and simultaneous gravity load. The aim was to validate the test procedure for different beam failure modes. Consequently, specimen CB1 failed by rupture of the tensile reinforcing bars while specimen CB0 failed due to concrete crushing and buckling of the compressed reinforcing bars. Results show that the presented loading protocol does not control the failure mode of the specimens. The specimens were also simulated numerically, and the results were comparable with the experimental observations in terms of load capacities, crack patterns, and failure modes.

AB - Test setups and loading histories aim to replicate the real conditions of the building structures. However, most of the tests on beams found in literature do not include gravity loads in the cyclic loading history. An experimental campaign was carried out. Two beam specimens, named CB0 and CB1, designed to exhibit different failure modes were subjected to a loading protocol that involved the imposition of reversed cyclic loading and simultaneous gravity load. The aim was to validate the test procedure for different beam failure modes. Consequently, specimen CB1 failed by rupture of the tensile reinforcing bars while specimen CB0 failed due to concrete crushing and buckling of the compressed reinforcing bars. Results show that the presented loading protocol does not control the failure mode of the specimens. The specimens were also simulated numerically, and the results were comparable with the experimental observations in terms of load capacities, crack patterns, and failure modes.

KW - cyclic loading

KW - failure mode

KW - gravity load

KW - numerical analyses

KW - plastic hinges

KW - reinforced concrete beam

KW - reversing hinges

KW - unidirectional hinges

UR - http://www.scopus.com/inward/record.url?scp=85063149543&partnerID=8YFLogxK

U2 - 10.1002/suco.201800255

DO - 10.1002/suco.201800255

M3 - Article

JO - Structural Concrete

JF - Structural Concrete

SN - 1464-4177

ER -