Strength deterioration of reinforced concrete beam–column joints subjected to cyclic loading

Lee, Jung-Yoon; Kim, Jin‐Young; Oh, Gi-Jong

doi:10.1016/j.engstruct.2009.03.009

Cited by 88 publications

(31 citation statements)

References 6 publications

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“… Jung-Yoon Lee et al (2009): Under the seismic loading the moment developed across the joint acts in the opposite direction so the BCJ is subjected to the flat and upright shear force the degree of which is larger than those in the beams and column bordering the joint. In this research paper the author proposes the method to find the ductility capacity of the BCJ in RCMRF after the formation of the plastic hinges at the both the ends of the beams.…”

Section: Literature Surveymentioning

confidence: 99%

Bursting Stresses in Beam Column Joint Analyzed and Designed as Per Indian Standards

2016

IJSR

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There are many cases in which the RC building frames are subjected to failure at the beam column joint (BCJ). This is due to wrong analysis and design of joints. During the analysis of the building frame, we usually assume the BCJ of the frame as fixed joint, but in reality the BCJ are never perfectly fixed one. Due to this, the forces and moments around and the stresses within the BCJ are analysed wrongly than actually induced during the seismic loading. The various countries had updated their codal provisions for the analysis and design of BCJ based on the experiments carried on till now. In this research, it is proposed to study the bursting stresses developed in the BCJ of the proposed building subjected to the seismic loading using the finite element based software (ANSYS). The analysis and design of the building frame and its BCJ's is carried out as per the provisions in draft copy of IS:13920:2014. The BCJ so designed are modelled in finite element based software and subjected to the forces obtained from the performance based analysis of the building to study bursting stresses developed in the BCJ.

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Section: Literature Surveymentioning

confidence: 99%

Bursting Stresses in Beam Column Joint Analyzed and Designed as Per Indian Standards

2016

IJSR

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“…According to the studies by Lee et al (2009) and Teraoka et al (1996), failure of the beam-column joints could be classified into three types: B failure, BJ failure, and J failure. …”

Section: Appendix 1: Determination Of Failure Modes Of Beam-column Jomentioning

confidence: 99%

“…The squareshaped cross section of the columns was determined after Antonopoulos and Triantafillou (2003) and Shafaei et al (2014). It is noted that the purpose of this study was to investigate the seismic performance beam-column joints failed in J failure mode, and thus the joint shear strength of a control specimen J-0 was determined to be less than the joint shear demand corresponding to flexural yielding of the beams (Lee et al 2009). In addition, to avoid column failure ahead of joint failure, the longitudinal reinforcement ratio of the column was determined as 3.4%, and the top and bottom longitudinal reinforcement ratios of the beam were 3.5 and 0.43%, respectively.…”

Section: Test Specimensmentioning

confidence: 99%

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Seismic Performance of Exterior RC Beam–Column Joints Retrofitted using Various Retrofit Solutions

Truong

Dinh

Kim

et al. 2017

Int J Concr Struct Mater

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Beam-column joints in existing concrete buildings might not satisfy the design requirements for seismic reinforcement details specified in current seismic design codes. Thus, in this study, various retrofit solutions for existing exterior beam-column joints with non-seismic details were developed: head re-bars anchoring, carbon fiber reinforced polymer (CFRP) wrapping, haunch retrofit element, and steel jacketing with various shapes and sizes. To investigate the seismic performance of exterior joints strengthened with the proposed retrofit solutions, seven half-scale exterior reinforced concrete beam-column joints including one control specimen and six retrofitted specimens were fabricated and tested under cyclic loading simulating earthquake loading. The test results showed that the proposed retrofit solutions could partially enhance the seismic capacity of the beam-column joints: steel jackets could increase deformation and load-carrying capacities; steel haunch elements could increase the load-carrying capacity, stiffness, and dissipated energy; and head re-bar anchoring and CFRP wrapping did not significantly effect on the seismic capacity of the beam-column joints.

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“…According to the previous studies by Lee et al [2] and Teraoka et al [3], the failure modes of nonseismically beamcolumn joints could be classified into three groups: B-failure ( / > 1.8) indicates flexural yielding of beams undergoing large inelastic deformation until ultimate rotational capacity without shear failure in joints; BJ-failure indicates joint failure after initial yielding of beam reinforcement (1 ≤ / ≤ 1.8); and J series indicate joint failure by shear force without yielding of beam reinforcement ( / ≤ 1), where / is the ratio of joint shear capacity to joint shear demand evaluated based on the beam yield and hardening mechanism.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Structural Performance of RC Exterior Beam-Column Joints Retrofitted by Steel Jacketing and Haunch Element under Cyclic Loading Simulating Earthquake Excitation

Dang

Dinh

2017

Advances in Civil Engineering

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Several retrofitting methods for reinforced concrete (RC) beam-column joints in old buildings without seismic details were developed. Four half-scale RC exterior beam-column joints were fabricated and tested under cyclic loading simulating earthquake excitation. The control specimen was designed to fail in joint shear. Two practical retrofitting strategies were applied to the control specimen which consider the architectural characteristic in real buildings, including steel jacketing and haunch retrofit solution. The structural performance of the test specimens was investigated in terms of various factors including damage and failure, loaddrift relationship, ductility, dissipated energy, and strain profiles of longitudinal reinforcement. Experimental results confirmed that the proposed retrofit methods were shown to enhance the seismic capacity of the joints in terms of the strength, deformation capacity, and energy dissipation capacity while the shear deformation in the panel zone significantly reduced in comparison with the control specimen.

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Strength deterioration of reinforced concrete beam–column joints subjected to cyclic loading

Cited by 88 publications

References 6 publications

Bursting Stresses in Beam Column Joint Analyzed and Designed as Per Indian Standards

Bursting Stresses in Beam Column Joint Analyzed and Designed as Per Indian Standards

Seismic Performance of Exterior RC Beam–Column Joints Retrofitted using Various Retrofit Solutions

Experimental Study on Structural Performance of RC Exterior Beam-Column Joints Retrofitted by Steel Jacketing and Haunch Element under Cyclic Loading Simulating Earthquake Excitation

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