Shear strength and seismic performance of non-seismically designed reinforced concrete beam-column joints

Wong, Ho Fai

doi:10.14711/thesis-b914043

Cited by 20 publications

(32 citation statements)

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“…A so-called Modified Rotating-Angle Softened-Truss Model was proposed by Wong [24] to predict the shear strength of exterior joints. The model was based on the compatibility equation proposed by modifying (i) modified compression field theory, (ii) rotating-angle softened truss-model, and (iii) fixed-angle softened truss model.…”

Section: Critical Review Of Existing Shear Strength Modelsmentioning

confidence: 99%

A new model to simulate joint shear behavior of poorly detailed beam–column connections in RC structures under seismic loads, Part I: Exterior joints

Sharma

Eligehausen

Reddy

2011

Engineering Structures

105

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Section: Critical Review Of Existing Shear Strength Modelsmentioning

confidence: 99%

A new model to simulate joint shear behavior of poorly detailed beam–column connections in RC structures under seismic loads, Part I: Exterior joints

Sharma

Eligehausen

Reddy

2011

Engineering Structures

105

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“…Page 16 of 20 Al-Osta et al Int J Concr Struct Mater (2018) 12:46 To evaluate an effect of aspect ratio on shear strength of BCJ experimental results of Wong (2005), Antonopoulos and Triantafillou (2003), Pantelides et al (2008) were investigated to cover a range of aspect ratio from 1 to 2. Those experimental results have been considered in which axial load ratio was almost similar.…”

Section: Development Of Shear Strength Equationmentioning

confidence: 99%

“…Sparse information is present in literature regarding the effect of column axial load in predicting seismic performance of BCJ. Research work by Pantelides et al (2002), Barnes and Jigoral (2008), Wong (2005), Antonopoulos and Triantafillou (2003), Pantelides et al (2008) and Sarsam and Phillips (1985) concluded that an increase in the column axial load also improves the shear capacity of BCJ. However, the range of column axial load/axial strength ratio considered by above researchers is very narrow and it is usually less than 0.15.…”

Section: Introductionmentioning

confidence: 98%

Effects of Variation of Axial Load on Seismic Performance of Shear Deficient RC Exterior BCJs

Al‐Osta

Khan

Baluch

et al. 2018

Int J Concr Struct Mater

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The focus of this paper is to investigate the effect of column axial load levels on the performance of shear deficient reinforced concrete beam column joints (BCJs) under monotonic and cyclic loading. The problem of interaction between shear stress in BCJ and axial load on column has been addressed in this work by initially postulating a mechanistic model and substantiated by an experimental test program. This was achieved by conducting appropriate tests on seven BCJ sub-assemblies subjected to monotonic and reversed cyclic loading, with varying levels of the column axial load. Experimental results were further validated using a finite element model in an ABAQUS environment. The effect of variation of compressive strength of concrete was considered in a subsequent parametric study, in order to obtain sufficient data, and utilized to develop a new shear strength model for BCJs which includes influences of all the important parameters required to predict the shear strength of BCJs. The results showed that column axial load affects the seismic performance of BCJs significantly. Experimental results demonstrated that at initial stages of loading, increase in axial load enhances the shear capacity of the joint and reduces its ductility. However, when the column axial load/axial strength ratio increases to about 0.6-0.7, shear strength starts to decrease rapidly, leading to pure axial failure of the joint. The magnitude of axial load/axial capacity ratio also dictates the failure mode and development of crack patterns in BCJs. Results of reverse cyclic tests on BCJs showed that high value of axial load/axial capacity ratio increases the initial stiffness of BCJ but rate of stiffness degradation is accelerated after peak strength attenuation. which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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“…Still, nominal joint shear strengths proposed in current code provisions are only applicable to joints Encyclopedia of Earthquake Engineering DOI 10.1007/978-3-642-36197-5_252-1 # Springer-Verlag Berlin Heidelberg 2021 satisfying the minimum requirements of transverse reinforcement in the joint region. Some analytical models (Vollum 1998;Hwang and Lee 1999;Lowes and Altoontash 2003;Wong 2005) for predicting joint shear strength have been developed based on the strut-and-tie (SAT) idealization incorporating Mohr's strain compatibility and softening concrete behavior, e.g., the modified compression field theory (MCFT) proposed by Vecchio and Collins (1986). However, LaFave and Shin (2005) indicated that the strength prediction using the MCFT tends to underestimate the shear strength of lightly reinforced and that of unreinforced joints.…”

Section: Loss Of Vertical Carrying Capacitymentioning

confidence: 99%

Seismic Vulnerability Assessment: Reinforced Concrete Structures

Luca

Verderame

2015

Encyclopedia of Earthquake Engineering

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Shear strength and seismic performance of non-seismically designed reinforced concrete beam-column joints

Cited by 20 publications

References 0 publications

A new model to simulate joint shear behavior of poorly detailed beam–column connections in RC structures under seismic loads, Part I: Exterior joints

A new model to simulate joint shear behavior of poorly detailed beam–column connections in RC structures under seismic loads, Part I: Exterior joints

Effects of Variation of Axial Load on Seismic Performance of Shear Deficient RC Exterior BCJs

Seismic Vulnerability Assessment: Reinforced Concrete Structures

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