Experimental investigation of RCS connections performance using self-consolidated concrete

The cyclic behavior of RCS connection consisted of Reinforced Concrete (RC) columns and Steel (S) beams is studied in this paper. Two interior connections are investigated experimentally. The joint of the first specimen is designed according to ASCE 1994 guideline, while the second specimen has a ne...

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Bibliographic Details
Published in:Journal of constructional steel research 2015-11, Vol.114, p.204-216
Main Authors: Alizadeh, Saeid, Attari, Nader K.A., Kazemi, Mohammad Taghi
Format: Article
Language:English
Subjects:
Additional bearing plates
Bearing
Composite structures
Concretes
Earthquake resistant structures
Joints
Plates
Plates (tectonics)
RCS connections
Reinforced concrete
Reinforcing steels
Self-consolidating concrete
Shear strength
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Summary:The cyclic behavior of RCS connection consisted of Reinforced Concrete (RC) columns and Steel (S) beams is studied in this paper. Two interior connections are investigated experimentally. The joint of the first specimen is designed according to ASCE 1994 guideline, while the second specimen has a new proposed joint detail. Self-consolidating concrete is used in both specimens. Self-consolidating concrete could improve constructability of the congested joint of RCS frames. The specimens detail include steel band plates, face bearing plates, L-shaped joint stirrups, and steel doubler plate for the panel zone. The proposed joint detail consists of additional bearing plates, which cause an increase in bearing & joint shear strength. Based on the experimental results, the behavior of both specimens was ductile and maintained their strength at high story drifts. This means that, RCS frames can be used in high seismic zones. By comparing the performance of two specimens, it is observed that using additional bearing plates, increases bearing and shear strength of the joint. Additionally, the inelastic force-deformation response of both specimens is simulated using the OpenSees software by taking into consideration the joint shear and bearing distortions. A modified method for modeling this type of connection is introduced and verified with experimental results. •Using self-consolidating concrete in RCS connections•Experimental study of new joint detailing to improve RCS connection performance•Proposing joint springs' behavior for numerical modeling of RCS connections
ISSN:0143-974X
1873-5983
DOI:10.1016/j.jcsr.2015.07.026