The shear design of in situ reinforced concrete beam–column joints subjected to monotonic loading

Sarsam, Kaiss F.; Phipps, M E

doi:10.1680/macr.1985.37.130.16

Cited by 53 publications

(19 citation statements)

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“…4, which shows that joint shear strength is increased by joint stirrups but the increase in strength can be less than the yield capacity of the effective joint stirrups, as is commonly assumed. 6,9,10 The evidence is even more convincing for beam±column joints with U bars in the beam. 8 Fig .…”

Section: Strut and Tie Model For Beam±column Joints With Stirrupsmentioning

confidence: 93%

“…8 Elsewhere, it has been shown 5,8 that the authors' simple design method 8 gives more realistic estimates of joint strength than other methods, 6,9,10,20 including codes. 21,22 The authors 8 take joint shear strength as the lesser of V c and V j given by equation (8), where á is conservatively taken as 0´2 and V c is the joint shear strength without stirrups, which is taken as (18) where â 1 X 0 for connections with L bars and 0´9 for connections with U bars.…”

Section: Comparison With Other Design Methodsmentioning

confidence: 99%

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Strut and tie models for analysis/design of external beam—column joints

Vollum

Newman

1999

Magazine of Concrete Research

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Strut and tie models have been developed for external beam±column joints with and without joint stirrups. The modelling is fraught with difficulties that include determining forces at joint boundaries and strut dimensions. In view of these difficulties, it was found necessary to define strut widths empirically. Test data were used to show that stirrups can increase joint shear strength by less than their yield capacity. The model accounts for this by using a stiffness analysis to determine the proportion of joint shear force resisted by the stirrups at failure. The resulting model predicts joint shear strength more realistically than existing non-finite-element methods and some finiteelement techniques. It is necessarily complex but capable of incorporation in spreadsheet-based design techniques. The authors believe that the behaviour of beam±column joints is too complex to be modelled realistically with simple strut and tie models. If a simple design method is required, the authors recommend their simplified empirical method.

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Section: Strut and Tie Model For Beam±column Joints With Stirrupsmentioning

confidence: 93%

Section: Comparison With Other Design Methodsmentioning

confidence: 99%

Strut and tie models for analysis/design of external beam—column joints

Vollum

Newman

1999

Magazine of Concrete Research

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“…The remaining parameters are still being debated. Some researchers (Bakir and Boduroglu, 2002;Hegger et al, 2003;Kim and LaFave, 2008;Parker and Bullman, 1997;Paulay and Priestley, 1992;Sarsam and Phipps, 1985;Vollum and Newman, 1999) have proposed inconsistent contributions of joint shear reinforcement in the shear strength of beamcolumn joints while some (Marques and Jirsa, 1975;Meinheit and Jirsa, 1977;Pantazopoulou and Bonacci, 1992) have indicated that column axial load has no coherent effect on joint shear strength. Clyde et al (2000) reported that column axial load helped to improve the joint shear strength while Park and Mosalam (2012) showed that joint shear strength is not clearly affected by column axial stress up to 0 : 2 f 9 c :…”

Section: Parameters Of Influence In Beam-column Connectionsmentioning

confidence: 99%

“…The first studies on beam-column connections were carried out by Hanson and Connor (1967). These were then developed by Zhang and Jirsa (1982), Sarsam and Phipps (1985), Pantazopoulou and Bonacci (1992), Hwang and Lee (1999). The latest studies on beam-column connections include those of Kim et al (2009), Choi and Kim (2011), Joyklad et al (2012), Kim and Yu (2012), Najafian et al (2013) and Patel et al (2013).…”

Section: Introductionmentioning

confidence: 99%

A new empirical model for shear strength of reinforced concrete beam–column connections

Tran

Hadi

Pham

2014

Magazine of Concrete Research

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A new empirical model to estimate the joint shear strength of both exterior and interior beam-column connections is proposed. In the model, four parameters that have the most influence on joint shear strength are considered.Among these four, a new parameter is introduced to consider the bond condition and the possibility of beam bars transferring joint shear force into the columns. Consideration of this parameter in the model significantly improves the accuracy of the predicted joint shear strength. To calibrate the model, a large database of 98 reinforced concrete (RC) exterior and 73 RC interior beam-column connections displaying joint failure mode was compiled from the literature. A parametric study was also carried out to evaluate the dependence of the predicted to tested joint shear strength ratio on the four influence parameters using the database. The proposed model showed superior performance over existing models. Moreover, comparisons of the predicted joint shear strength with experimental results and with four existing models showed the accuracy of the proposed model.

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“…Sarsam and Phipps [7] suggested an empirical model for predicting the shear capacity of the beam-column joints, as given in Eqs. …”

Section: Sarsam and Phipps Modelmentioning

confidence: 99%

Evaluation of Models for Joint Shear Strength of Beam–Column Subassemblages for Seismic Resistance

Pradeesh

Sasmal

Devi

et al. 2014

Advances in Structural Engineering

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Many parts of the world experienced devastating earthquakes in the recent past. It is observed that those collapsed reinforced concrete (RC) structures are decades old and not designed and detailed to resist seismic loads. Beam-column joints are the most affected structural components during earthquakes due to the discontinuous load path in the vicinity. Since, shear strength of beam column joint plays the major role on the performance of RC structures under earthquake, many models were proposed by researchers to predict the shear strength of beam-column joints using different idealizations, approaches and mechanisms. These can be categorized into plane stress-, explicit-, analytical-and empirical-models. In the present work, these models are critically reviewed and summarized. The concept, parameters considered, significant observations and their limitations of the most promising and robust models in predicting the joint shear behaviour are brought out in this paper.

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The shear design of in situ reinforced concrete beam–column joints subjected to monotonic loading

Cited by 53 publications

References 0 publications

Strut and tie models for analysis/design of external beam—column joints

Strut and tie models for analysis/design of external beam—column joints

A new empirical model for shear strength of reinforced concrete beam–column connections

Evaluation of Models for Joint Shear Strength of Beam–Column Subassemblages for Seismic Resistance

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