TY - JOUR
T1 - Behaviour and detailing of coupling beams with high-strength materials
AU - Yang, Cancan
AU - Chen, Si Chi
AU - Yen, Cheng Hao
AU - Hung, Chung Chan
N1 - Funding Information:
This study was sponsored in part by the Ministry of Science and Technology, Taiwan , under Grant No. 109-2636-E-006-015 , and the experimental program was conducted at the National Center for Research on Earthquake Engineering (NCREE), Taiwan. The support of the high-strength steel reinforcement provided by Tokyo Tekko Co Ltd, Japan is also greatly acknowledged. The opinions, findings, and conclusions expressed in this paper are those of the authors, and do not necessarily reflect those of the sponsors.
Funding Information:
This study was sponsored in part by the Ministry of Science and Technology, Taiwan, under Grant No. 109-2636-E-006-015, and the experimental program was conducted at the National Center for Research on Earthquake Engineering (NCREE), Taiwan. The support of the high-strength steel reinforcement provided by Tokyo Tekko Co Ltd, Japan is also greatly acknowledged. The opinions, findings, and conclusions expressed in this paper are those of the authors, and do not necessarily reflect those of the sponsors.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2022/4/15
Y1 - 2022/4/15
N2 - High-strength steel (HSS) has the potential to reduce reinforcement congestion and construction difficulties for coupling beams. This paper aims to investigate coupling beams using HSS diagonal bars and HSS transverse reinforcement. Four coupling beam specimens with a clear span-to-depth ratio of 2.0 were built with varying concrete materials and confinement details and tested under quasi-static reversed-cyclic shear loading. Despite using the maximum transverse reinforcement spacing that is allowed in ACI 318–19, all coupling beam specimens exhibited satisfactory seismic performance in terms of adequate deformation capacity and stable hysteretic response. Favorable performance, characterized by a greater damage control ability, larger shear strength, and deformation capacity, was achieved in specimens using high-strength concrete, especially fiber-reinforced high-strength concrete. The coupling beam specimen with confinement provided for the entire beam cross section outperformed the specimen with confinement provided for the individual diagonals. The state-of-practice design methods for coupling beams are evaluated with experimental results.
AB - High-strength steel (HSS) has the potential to reduce reinforcement congestion and construction difficulties for coupling beams. This paper aims to investigate coupling beams using HSS diagonal bars and HSS transverse reinforcement. Four coupling beam specimens with a clear span-to-depth ratio of 2.0 were built with varying concrete materials and confinement details and tested under quasi-static reversed-cyclic shear loading. Despite using the maximum transverse reinforcement spacing that is allowed in ACI 318–19, all coupling beam specimens exhibited satisfactory seismic performance in terms of adequate deformation capacity and stable hysteretic response. Favorable performance, characterized by a greater damage control ability, larger shear strength, and deformation capacity, was achieved in specimens using high-strength concrete, especially fiber-reinforced high-strength concrete. The coupling beam specimen with confinement provided for the entire beam cross section outperformed the specimen with confinement provided for the individual diagonals. The state-of-practice design methods for coupling beams are evaluated with experimental results.
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U2 - 10.1016/j.jobe.2021.103843
DO - 10.1016/j.jobe.2021.103843
M3 - Article
AN - SCOPUS:85121109983
VL - 47
JO - Journal of Building Engineering
JF - Journal of Building Engineering
SN - 2352-7102
M1 - 103843
ER -