A simplified model for reinforced concrete beam-column joints under seismic loads

This paper presents a simplified model for reinforced concrete beam–column joints under seismic loads. In the model, the beams, columns and the joint zone are assumed to remain rigid, and flexural deformations of the beams and column are concentrated at the joint interfaces. The compatibility condit...

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Main Authors: Kang, Shao-Bo, Tan, Kang Hai
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2018
Subjects:
Online Access:https://hdl.handle.net/10356/87268
http://hdl.handle.net/10220/44370
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-872682020-03-07T11:43:34Z A simplified model for reinforced concrete beam-column joints under seismic loads Kang, Shao-Bo Tan, Kang Hai School of Civil and Environmental Engineering Modelling Joints This paper presents a simplified model for reinforced concrete beam–column joints under seismic loads. In the model, the beams, columns and the joint zone are assumed to remain rigid, and flexural deformations of the beams and column are concentrated at the joint interfaces. The compatibility condition of the joint is established in accordance with the rigid-plastic assumption. To correlate the flexural deformations of the beams and columns to strains of tensile reinforcement, piecewise linear strain profiles of tensile reinforcement are assumed along the beams and columns and slips of embedded reinforcement in the joint are also considered. Thereafter, the plane-section assumption is employed to determine the strain profiles at the joint interfaces. In calculating the compression force in concrete, the stress–strain model for concrete is used instead of the equivalent rectangular concrete compressive stress block. The rigid-plastic model was calibrated against published experimental results of interior and exterior beam–column joints in terms of load–displacement curves. Furthermore, the yield displacement of beam–column joints was calculated and verified by test data. Through the analytical model, forces transferred to the joint zone by tensile, compressive reinforcing bars and concrete can be quantified, which enables further development of the joint model to evaluate the shear resistance of beam–column joints. Published version 2018-02-01T07:14:54Z 2019-12-06T16:38:32Z 2018-02-01T07:14:54Z 2019-12-06T16:38:32Z 2018 Journal Article Kang, S.-B., & Tan, K. H. (2018). A simplified model for reinforced concrete beam-column joints under seismic loads. Magazine of Concrete Research, 70(3), 138-153. 0024-9831 https://hdl.handle.net/10356/87268 http://hdl.handle.net/10220/44370 10.1680/jmacr.16.00074 en Magazine of Concrete Research © 2018 Thomas Telford (ICE Publishing). This paper was published in Magazine of Concrete Research and is made available as an electronic reprint (preprint) with permission of Thomas Telford (ICE Publishing). The published version is available at: [http://dx.doi.org/10.1680/jmacr.16.00074]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 16 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Modelling
Joints
spellingShingle Modelling
Joints
Kang, Shao-Bo
Tan, Kang Hai
A simplified model for reinforced concrete beam-column joints under seismic loads
description This paper presents a simplified model for reinforced concrete beam–column joints under seismic loads. In the model, the beams, columns and the joint zone are assumed to remain rigid, and flexural deformations of the beams and column are concentrated at the joint interfaces. The compatibility condition of the joint is established in accordance with the rigid-plastic assumption. To correlate the flexural deformations of the beams and columns to strains of tensile reinforcement, piecewise linear strain profiles of tensile reinforcement are assumed along the beams and columns and slips of embedded reinforcement in the joint are also considered. Thereafter, the plane-section assumption is employed to determine the strain profiles at the joint interfaces. In calculating the compression force in concrete, the stress–strain model for concrete is used instead of the equivalent rectangular concrete compressive stress block. The rigid-plastic model was calibrated against published experimental results of interior and exterior beam–column joints in terms of load–displacement curves. Furthermore, the yield displacement of beam–column joints was calculated and verified by test data. Through the analytical model, forces transferred to the joint zone by tensile, compressive reinforcing bars and concrete can be quantified, which enables further development of the joint model to evaluate the shear resistance of beam–column joints.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Kang, Shao-Bo
Tan, Kang Hai
format Article
author Kang, Shao-Bo
Tan, Kang Hai
author_sort Kang, Shao-Bo
title A simplified model for reinforced concrete beam-column joints under seismic loads
title_short A simplified model for reinforced concrete beam-column joints under seismic loads
title_full A simplified model for reinforced concrete beam-column joints under seismic loads
title_fullStr A simplified model for reinforced concrete beam-column joints under seismic loads
title_full_unstemmed A simplified model for reinforced concrete beam-column joints under seismic loads
title_sort simplified model for reinforced concrete beam-column joints under seismic loads
publishDate 2018
url https://hdl.handle.net/10356/87268
http://hdl.handle.net/10220/44370
_version_ 1681046000797483008