Strut-and-tie modelling for the analysis and design of RC beam-column joints

Kassem, Wael

doi:10.1617/s11527-015-0732-1

Cited by 30 publications

(10 citation statements)

References 23 publications

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“…A series of researchers have collected the test results in literature and have developed empirical and analytical relations to predict the RC joint shear capacity (Pauletta et al (2015), Muhsen andUmemura (2011), Park and, Lima et al (2012), Wong and Kuang (2014), Wang et al (2012), Jeon et al (2014) and Kassem (2016)). For example Kim and Lafave (2007) collected experimental results of semi-static cyclic tests carried out by different researchers on various types of RC beam-column connections (exterior, interior and corner joints).…”

Section: Latin American Journal Of Solids and Structures 14 (2017) 12mentioning

confidence: 99%

Finite Element Analysis of Reinforced Concrete Beam-Column Connections with Governing Joint Shear Failure Mode

Najafgholipour

Dehghan

Dooshabi

et al. 2017

Lat. Am. j. solids struct.

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Reinforced concrete (RC) beam-column connections especially those without transverse reinforcement in joint region can exhibit brittle behavior when intensive damage is concentrated in the joint region during an earthquake event. Brittle behavior in the joint region can compromise the ductile design philosophy and the expected overall performance of structure when subjected to seismic loading. Considering the importance of joint shear failure influences on strength, ductility and stability of RC moment resisting frames, a finite element modeling which focuses on joint shear behavior is presented in this article. Nonlinear finite element analysis (FEA) of RC beam-column connections is performed in order to investigate the joint shear failure mode in terms of joint shear capacity, deformations and cracking pattern. A 3D finite element model capable of appropriately modeling the concrete stress-strain behavior, tensile cracking and compressive damage of concrete and indirect modeling of steel-concrete bond is used. In order to define nonlinear behavior of concrete material, the concrete damage plasticity is applied to the numerical model as a distributed plasticity over the whole geometry. Finite element model is then verified against experimental results of two non-ductile beam-column connections (one exterior and one interior) which are vulnerable to joint shear failure. The comparison between experimental and numerical results indicates that the FE model is able to simulate the performance of the beam-column connections and is able to capture the joint shear failure in RC beam-column connections.

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Section: Latin American Journal Of Solids and Structures 14 (2017) 12mentioning

confidence: 99%

Finite Element Analysis of Reinforced Concrete Beam-Column Connections with Governing Joint Shear Failure Mode

Najafgholipour

Dehghan

Dooshabi

et al. 2017

Lat. Am. j. solids struct.

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“…In conventional RC joints, the effect of column intermediate bars on joint shear capacity is more modest than that of joint hoops [ 47 ]. In the case of the CFRP-strengthened 2D joints, a similar conclusion was reached between the horizontal and vertical sheets applied on the joint panels [ 6 ].…”

Section: Resultsmentioning

confidence: 99%

Effectiveness and Efficiency of Externally Bonded CFRP Sheets for Shear Strengthening of RC Beam-Column Joints

Wang

Liu³

et al. 2022

Polymers

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To develop feasible carbon fiber reinforced polymer (CFRP) retrofit schemes for the shear strengthening of real three-dimensional reinforced concrete (RC) beam-column joints, a series of parameters in relation to the contributions of the CFRP sheets externally bonded to joint panels was numerically investigated in this study. The parameters include CFRP reinforcement ratio, CFRP layout, transverse beam-to-joint panel width ratio, transverse beam-to-joint panel height ratio, location of transverse beam, and number of transverse beams. Strengthening efficiency, a new dimensionless index, was introduced to evaluate the residual effect of a CFRP-strengthening system weakened by the presence of transverse beams in comparison with the increase in joint shear capacity in relation to the one-way counterpart. The results obtained from 44 nonlinear finite element models, which were calibrated against experimental observations, confirmed the effectiveness of the CFRP strengthening technique with regard to the relatively wide ranges of the parameters. The significant differences among the roles of the parameters were revealed, and the reasons behind the differences were analyzed. Furthermore, the shear mechanism of the CFRP-retrofitted joint panels was discussed with the proposed strut-and-tie model.

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“…The main feature of seismic design of beam-column joints in ductile frames is to ensure the complete development of plastic hinges of adjacent elements (ordinarily the beams) and the dissipation of seismic energy, while preventing the occurrence of brittle failure mechanisms during earthquake shaking. Given the importance of shear design of RC beam-column joints, various codes [1,2] and authors [3][4][5][6][7][8][9][10][11][12][13][14][15][16] have tried to predict the strength of these structural elements under seismic loads.…”

Section: Introductionmentioning

confidence: 99%

“…Wang et al [7] proposed a model which included the nominal tensile strength of an idealized plane stressed concrete, the influence of the axial load of the column and the contributions of both the horizontal stirrups and the intermediate vertical bars in the joint core. Kassem [8] proposed an explicit formula by summing the different contributions given by the diagonal concrete strut, the joint stirrups and the column intermediate bars. In other cases, the shear strength calculation is based on an iterative procedure, like those reported by Hwang and Lee [13] or Wong and Kuang [16].…”

Section: Introductionmentioning

confidence: 99%

Semi-empirical model for shear strength of RC interior beam-column joints subjected to cyclic loads

Pauletta

Marco

Frappa

et al. 2020

Engineering Structures

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Strut-and-tie modelling for the analysis and design of RC beam-column joints

Cited by 30 publications

References 23 publications

Finite Element Analysis of Reinforced Concrete Beam-Column Connections with Governing Joint Shear Failure Mode

Finite Element Analysis of Reinforced Concrete Beam-Column Connections with Governing Joint Shear Failure Mode

Effectiveness and Efficiency of Externally Bonded CFRP Sheets for Shear Strengthening of RC Beam-Column Joints

Semi-empirical model for shear strength of RC interior beam-column joints subjected to cyclic loads

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