TY - JOUR
T1 - Slab–column connection punching and ductility improvement methods for seismic response of buildings with flat slabs
AU - Isufi, Brisid
AU - Almeida, André
AU - Marreiros, Rui
AU - Ramos, António Pinho
AU - Lúcio, Válter
N1 - info:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FECM%2F114492%2F2009/PT#
info:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FECM%2F114492%2F2009/PT#
TDC/ECI‐EST/30511/2017
EXPL/ECM‐EST/1371/2013
EXPL/ECM‐EST/1371/2013
PTDC/ECI‐EST/30511/2017
PY - 2022/6
Y1 - 2022/6
N2 - Replicating boundary conditions of slab–column connections under seismic loading in a realistic manner is difficult, and different test setups have been used throughout the years. An innovative test setup has been developed at NOVA School of Science and Technology, and it has been used to test various punching shear behavior enhancement methods, including stirrups, headed studs, fiber-reinforced concrete (FRC), high-strength concrete (HSC), and post-installed bolts under similar conditions. The aim of this paper is to compare the results from these different solutions for seismic loading. It is shown that relatively large drift ratios at failure can be achieved in slabs containing shear reinforcement. However, less conventional methods such as FRC and HSC are shown to be promising alternatives. Compared to reference specimens that failed at 1% drift, the other specimens with various enhancement methods achieved significantly higher drifts, ranging from 2.5% to above 6.0%.
AB - Replicating boundary conditions of slab–column connections under seismic loading in a realistic manner is difficult, and different test setups have been used throughout the years. An innovative test setup has been developed at NOVA School of Science and Technology, and it has been used to test various punching shear behavior enhancement methods, including stirrups, headed studs, fiber-reinforced concrete (FRC), high-strength concrete (HSC), and post-installed bolts under similar conditions. The aim of this paper is to compare the results from these different solutions for seismic loading. It is shown that relatively large drift ratios at failure can be achieved in slabs containing shear reinforcement. However, less conventional methods such as FRC and HSC are shown to be promising alternatives. Compared to reference specimens that failed at 1% drift, the other specimens with various enhancement methods achieved significantly higher drifts, ranging from 2.5% to above 6.0%.
KW - advanced concrete materials
KW - cyclic loading
KW - flat slab
KW - punching shear reinforcement
KW - seismic
UR - http://www.scopus.com/inward/record.url?scp=85127645406&partnerID=8YFLogxK
U2 - 10.1002/suco.202100690
DO - 10.1002/suco.202100690
M3 - Article
AN - SCOPUS:85127645406
SN - 1464-4177
VL - 23
SP - 1385
EP - 1398
JO - Structural Concrete
JF - Structural Concrete
IS - 3
ER -