A new design equation for predicting the joint shear strength of monotonically loaded exterior beam-column joints

Bakır, Pelin Gündeş; Boduroglu, H.

doi:10.1016/s0141-0296(02)00038-x

Cited by 115 publications

(37 citation statements)

References 3 publications

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“…It shows that the model performs quite well for both unreinforced and under-reinforced joints, while non-conservative predictions can be observed for EC8-compliant ones. Figure 10 refers to the model by Bakir and Boduroglu (2002) whose predictions result in good agreement with the experimental values. A slightly conservative trend is obtained for unreinforced joints, while shear strength predictions for under-reinforced and EC8-compliant joints are very accurate and affected by low dispersion.…”

Section: Assessment Of a Set Of Capacity Models Available In The Sciementioning

confidence: 61%

“…In fact, they lack in simulating that the beneficial effect of stirrups decreases by increasing the amount of horizontal reinforcement. Among the others, the model by Bakir and Boduroglu (2002) actually looks after this phenomenon by introducing a well calibrated reduction factor for the contribution of the horizontal reinforcement depending on the amount of steel stirrups (Lima et al 2012). …”

Section: Assessment Of a Set Of Capacity Models Available In The Sciementioning

confidence: 99%

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Capacity models for shear strength of exterior joints in RC frames: experimental assessment and recalibration

Lima

Martinelli

Faella

2012

Bull Earthquake Eng

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Several theoretical models are currently available in the scientific literature for evaluating the shear capacity of both exterior and interior beam-to-column joints in reinforced concrete (RC) frames. A reasonably wide set of those models, based on either analytical or empirical formulations, has been summarised within a companion work. The present paper firstly presents a wide database which collects results obtained in about two-hundred experimental tests carried out on RC joints. Those results are employed for assessing the above mentioned capacity models by considering a set of experimental data much wider than those usually utilised in the original formulation of such models. Accuracy and reliability of the various models are measured by quantifying some statistical parameters actually describing the relationship between the experimental evidence and the prediction of the various capacity models under consideration. Three relevant classes of joints (namely unreinforced, under reinforced and code-compliant) are considered with the aim of emphasising that the various models perform in a rather different way when applied to those different classes. Finally, a possible recalibration of the various models is proposed with the objective of enhancing their predictive capacity with respect to both the database as a whole and the three classes of RC joints mentioned above.

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Section: Assessment Of a Set Of Capacity Models Available In The Sciementioning

confidence: 61%

Section: Assessment Of a Set Of Capacity Models Available In The Sciementioning

confidence: 99%

Capacity models for shear strength of exterior joints in RC frames: experimental assessment and recalibration

Lima

Martinelli

Faella

2012

Bull Earthquake Eng

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“…Bakir and Boduroğlu [1] proposed a model based on the regression analysis of available data reported by various researchers. In this model, the percentage of beam reinforcement and the aspect ratio of the joint are considered.…”

Section: Bakir and Boduroğlu 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 last one is a rather complex theoretical model based on a softened strut-and-tie mechanism and the same authors (Hwang and Lee 2002) provided a simplified procedure useful for both interior and exterior joints. The theoretical model by Parra-Montesinos and Wight (2002) and the semi-theoretical model by Bakir and Boduroglu (2002) were developed just few years later. Then, they have been followed by the empirical model by Hegger et al (2003) based on several experimental results.…”

Section: Outline Of the Main Contributionsmentioning

confidence: 99%

“…3.7 The model by Bakir and Boduroglu (2002) Bakir and Boduroglu (2002) proposed a new empirical design equation for exterior joints, based on a parametric study involving 58 tests conducted in Europe. According to experimental results, the shear strength of exterior beam-to-column joints depends by the concrete cylinder strength, the column and beam reinforcement ratios, the beam reinforcement detailing (U or L bars anchored into the connection), the joint aspect ratio and the amount of stirrups into the joint panel.…”

Section: Fig 2 Joint Shear Resisting Mechanismsmentioning

confidence: 99%

Capacity models for shear strength of exterior joints in RC frames: state-of-the-art and synoptic examination

Lima

Martinelli

Faella

2012

Bull Earthquake Eng

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Damage observed in existing structures after recent earthquake events pointed out the key importance of beam-to-column joints in influencing the global response of reinforced concrete structures. In the last two decades several theoretical and empirical models have been proposed for evaluating the shear strength of beam-to-column joints. The present paper reports an overview of the models currently available in the scientific literature for evaluating the shear capacity of exterior beam-to-column joints. The present study is the first step of a wide analysis aimed to assessing such models and improving them. Moreover, the uncertainties deriving by applying the mentioned models will be also quantified therein, by means of well-established procedures for probabilistic seismic analysis of structures. The final results of that study are reported within a companion paper

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A new design equation for predicting the joint shear strength of monotonically loaded exterior beam-column joints

Cited by 115 publications

References 3 publications

Capacity models for shear strength of exterior joints in RC frames: experimental assessment and recalibration

Capacity models for shear strength of exterior joints in RC frames: experimental assessment and recalibration

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

Capacity models for shear strength of exterior joints in RC frames: state-of-the-art and synoptic examination

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