An experimental study on Kevlar strengthening of beam–column connections

Granata, P; Parvin, Azadeh

doi:10.1016/s0263-8223(00)00187-2

Cited by 62 publications

(25 citation statements)

References 7 publications

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“…Later, this idea was developed by laboratory and analytic works of other researchers, such as Lee et al, who used FRP jacket for shear and flexural strengthening of joints [2], Antonopoulos and Thanasis, who studied the use of fiber reinforced polymer (CFRP) composites for strengthening of beam-column joints with focus on fiber debonding [3], and Parvin and Granata [4,5], who studied the effect of FRP on RC joints through computer modeling as well as laboratory work. These studies have been generally focused on augmenting the shear strength.…”

Section: Introductionmentioning

confidence: 99%

Soft Computing-based Approach on Capacity Prediction of FRP Strengthened RC Joints

2018

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Abstract. Shear failure of the RC beam-column joints is a brittle failure which has no prior warning and can induce tremendous damages because of collapse of column and joint before the connected beam. This paper is focused on one particular method of strengthening the RC joints, that is, the use of FRP composites as confining element. The results of previous studies have shown that strengthening the RC beam-column joints with FRP composites can improve their shear capacity. In this study, the data collected from the existing standards and studies regarding the FRP strengthened RC joints were used to develop an artificial neural network model for predicting the shear strength contribution of FRP jacket. The developed model was then used to evaluate the role of different parameters on this contribution, and finally derive a formula for contribution of FRP jacket to the shear strength of the RC beam-column joints.

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Section: Introductionmentioning

confidence: 99%

Soft Computing-based Approach on Capacity Prediction of FRP Strengthened RC Joints

2018

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“…Several FRP-strengthening materials and layouts were considered to define the benefits provided to the seismic performance of beam-column joints (e.g., Gergely et al [8], Pantelides et al [9], Gergely et al [10], Granata and Parvin [11], Ghobarah and Said [12], Pantelides et al [13] among others).…”

Section: Introductionmentioning

confidence: 99%

Simplified Model for Strengthening Design of Beam–Column Internal Joints in Reinforced Concrete Frames

et al. 2015

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The beam-column joints are very restricted areas in which the internal forces, generated by boundary elements, act on the concrete core and reinforcing bars with a very high gradient. They are the link between horizontal and vertical structural elements, and therefore, they are directly involved in the transfer of seismic forces. Thus, they are crucial to study the seismic behavior of reinforced concrete (RC) structures. To fully understand the seismic performances and failure modes of beam-column joints in RC buildings, a simplified analytical model of joint behavior is proposed and theoretical simulations are performed. The aim of the model, focusing on internal perimetric joints, is to identify the strength hierarchy in terms of capacity for different failure modes (namely failure of cracked joint, bond failure of passing through bars, flexural/shear failures of columns or beams). It could represent a tool for the designers of new joints to quantify the performance of new structures, but also as a tool for the designers of external strengthening of existing joints in order to calculate the benefits of the retrofit and pushing the initial failure to a more desirable failure mode. Further, some experimental results of tests available in the scientific literature are reported, analyzed and compared.Polymers 2015, 7 1733

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“…AlSalloum and Almusallam, 2007;Antonopoulos and Triantafillou, 2003;Shrestha et al, 2009) or longitudinal beam reinforcement anchorage capacity (e.g. Ghobarah and El-Amoury, 2005;Granata and Parvin, 2001), have been strengthened with various arrangements of externally bonded FRP and tested to date. A comprehensive review of existing experimental research on strengthening RC beam-column connections with FRP, in addition to an evaluation of the effectiveness of the strengthening schemes, is given in Smith and Shrestha (2006).…”

Section: Introductionmentioning

confidence: 99%

The effectiveness of FRP strips in repairing moderately and severely damaged RC beam–column connections

Shrestha¹,

Smith²,

Samali³

2011

Magazine of Concrete Research

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An effective means to increase the shear resistance of shear deficient reinforced-concrete (RC) beam-column connections is by bonding fibre-reinforced polymer (FRP) composites. The majority of research to date has focused on the strengthening of two-dimensional reinforced-concrete connections with fibre-reinforced polymer; that is, the strengthening of virgin (undamaged) connections. This paper reports the results of tests on the effectiveness of fibre-reinforced polymer strips in repairing two-dimensional connections with different degrees of damage. The results of tests assessing the effectiveness of fibre-reinforced polymer strips in strengthening virgin connections are also reported. All test specimens are extensively instrumented and their behaviour and failure comprehensively documented. In the case of the repaired specimens, instrumentation is concentrated on the fibre-reinforced polymer around the damage region, thus enabling the strength contribution and behaviour of the fibre-reinforced polymer repair to be closely monitored. The results of this experimental programme enable a better understanding of the strengthening and repair effect of fibre-reinforced polymer strips in reinforced-concrete beam-column connections, and the results will also facilitate the future development and calibration of analytical and numerical models.

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An experimental study on Kevlar strengthening of beam–column connections

Cited by 62 publications

References 7 publications

Soft Computing-based Approach on Capacity Prediction of FRP Strengthened RC Joints

Soft Computing-based Approach on Capacity Prediction of FRP Strengthened RC Joints

Simplified Model for Strengthening Design of Beam–Column Internal Joints in Reinforced Concrete Frames

The effectiveness of FRP strips in repairing moderately and severely damaged RC beam–column connections

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