Exterior beam column joints – Shear strength model and design formula

Pauletta, Margherita; Luca, Daniele Di; Russo, Gianpiero

doi:10.1016/j.engstruct.2015.03.040

Cited by 49 publications

(18 citation statements)

References 8 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.

112

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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.

112

View full text Add to dashboard Cite

show abstract

“…It has to be observed that the difference introduced in the model for interior joints respect to the model for exterior ones [18] is the presence of three concrete struts instead of two (Fig. 2(b)).…”

Section: Joint Shear Strengthmentioning

confidence: 99%

“…2. The concrete struts: (a) three in interior joints; (b) two in exterior ones [18]. the cylindrical compressive strength of concrete and A g (Fig.…”

Section: Shear Strength Contribution V Hc St mentioning

confidence: 99%

“…In this study, a strut-and-tie model is proposed to determine the shear strength of interior joints; it represents an evolution of the models provided by Park and Mosalam [17] and Pauletta et al [18] for exterior joints without and with shear reinforcement, respectively. In order to identify the forces acting in the joint core and on the cross sections of the adjacent elements, a plane frame joint is considered for simplicity.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Pauletta

Marco

Frappa

et al. 2020

Engineering Structures

Self Cite

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“…e gene expression program can be used to predict the computational model of shear bearing capacity of reinforced concrete beam column joint [22]. e studies in [23,24] give the computational model and computational formula that are suitable for shear strength of reinforced concrete beam column joint under the action of earthquake.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study and Numerical Study on Shear Bearing Capacity of Shear Key Joints of Reinforced Concrete Open‐Web Sandwich Plates

Zhang

et al. 2021

Advances in Materials Science and Engineering

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The shear key in the reinforced concrete open-web sandwich plate (RCOSP) is a block joint that connects with the top chord and the bottom chord. In order to understand the failure mode of the shear key and verify the accuracy of the current algorithm, a total of 9 test pieces are prepared and classified 3 groups were assigned longitudinal reinforcement (LR) ratios of 0.49%, 0.82%, and 1.24%, respectively. The horizontal concentrated static loading under simple support condition is carried out. The test results show that the shear key is horizontally cut and the concrete is pulled apart or crushed along the direction of chord width at the shear key-chords area; the strain level of the concrete and stirrup of the shear key is lower averagely; the development of the horizontal displacement and the strain of the longitudinal bars of the test pieces goes through elastic, elastoplastic, and plastic stages; the ultimate load of the test pieces has almost no relationship with the reinforcement ratio of shear key but is controlled by the degree of crack development in the area where shear key connects with the chords. To avoid the current algorithm overestimating the shear capacity of shear key, the restricted condition of shear section is proposed. The finite element analysis (FEA) further verifies that the restricted condition of shear section proposed in this paper is reasonable and necessary.

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Exterior beam column joints – Shear strength model and design formula

Cited by 49 publications

References 8 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

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

Experimental Study and Numerical Study on Shear Bearing Capacity of Shear Key Joints of Reinforced Concrete Open‐Web Sandwich Plates

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