Improving shear capacity of existing RC beams using external bonding of steel plates

Altın, Sinan; Anıl, Özgür; Kara, M. Emin

doi:10.1016/j.engstruct.2004.12.012

Cited by 82 publications

(32 citation statements)

References 6 publications

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“…UHPC strengthening system is an alternative approach to rehabilitate or restore the deteriorated concrete members or to retrofit or strengthen the sound concrete members. It has exceptional advantages over traditional methods such as steel plate-bonding (Altin et al 2005), fiber reinforced polymer (FRP) strengthening (Chen and Teng 2003), section enlargement, etc. For example, FRP possesses desired properties such as high strength, corrosion resistance, ease to apply, and without much change in the size of the structural member.…”

Section: Open Accessmentioning

confidence: 99%

See 1 more Smart Citation

Experimental and Numerical Investigation of Shear Behavior of RC Beams Strengthened by Ultra-High Performance Concrete

Bahraq

Al‐Osta

Ahmad

et al. 2019

Int J Concr Struct Mater

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This paper presents a study on the shear behavior of reinforced concrete (RC) beams strengthened by jacketing the surfaces of the beams using ultra-high performance fiber reinforced concrete (UHPC). The surfaces of the RC beams were prepared by sandblasting and UHPC was cast in situ over the surfaces of RC beams. The beams were strengthened using two different strengthening configurations; (i) two longitudinal sides strengthening (ii) three sides strengthening. The bond between normal concrete and UHPC was examined by conducting splitting tensile strength and slant shear strength tests on composite cylindrical specimens cast using normal concrete and UHPC. The control and strengthened beam specimens were tested using four-point loading arrangement maintaining different shear span-to-depth ratios. The results of tested beams showed the beneficial effects of strengthening the RC beams using UHPC, as evident from enhancement of the shear capacity and shifting of the failure mode from brittle to ductile with more stiff behavior. In addition, a non-linear finite element model (FEM) was developed to examine the sufficiency of the experimental results used to study the shear behavior of control and strengthened beams. The failure loads and the crack patterns determined experimentally matched well with those predicted using the proposed model with a reasonably good degree of accuracy.

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Section: Open Accessmentioning

confidence: 99%

“…As far as structural performance is concerned, both flexural and shear strengths requirements should be satisfied. RC members are mainly designed to develop their full strength (Altin et al 2005). However, in some cases the failure of beams can take place due to deficiency in the design for shear.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Shear Behavior of RC Beams Strengthened by Ultra-High Performance Concrete

Bahraq

Al‐Osta

Ahmad

et al. 2019

Int J Concr Struct Mater

View full text Add to dashboard Cite

show abstract

“…Adhikary et al (2000) found that the shear strength of a plated RC beam increases as the thickness and depth of the continuous side-plate increases. Altin et al (2005) showed that the epoxy-bonded sideplates in the shear spans increase the beam ductility by limiting the amount and extent of shear cracks in the beam. Su and Zhu (2005) found that a possible slip between the bolts of the sideplate and the beam results in significant decreases in the beam ductility.…”

Section: Introductionmentioning

confidence: 99%

Strengthening of RC T-beams with perforated steel plates

Aykaç

Kalkan

et al. 2013

Magazine of Concrete Research

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The study investigates the flexural behaviour and ductilities of reinforced concrete (RC) T-beams strengthened with perforated steel plates. A total of eight full-scale RC T-beams were tested. Three strengthened beams and a reference unplated beam were reinforced with closely spaced stirrups, while the remaining plated beams and reference beam did not have adequate amounts of shear reinforcement (shear deficient). Shear strengthening with post-tensioned anchors was found to shift the failure mode of a shear-deficient beam from shear to flexure. The post-tensioning forces in the anchors were established to be kept at an optimum level to provide adequate shear strength to the beam and to prevent overstraining of the soffit plate between the shear anchor locations. The perforations increased the ductilities, energy absorption capacities and permanent deformations of the specimens. The use of compression plate in addition to the tension (soffit) plate greatly contributed to the ductilities of specimens with adequate and inadequate shear strength.

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“…Various strengthening techniques were developed and applied to strengthen deficient RC structures in recent years [1,2]. However, a new strengthening technique, external bonding fiber-reinforced polymer (FRP), has turned out to be popular because of its superior mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Predicting the Capacity of RC Beams Strengthened in Shear with Side-Bonded FRP Reinforcements Using Artificial Neural Networks

Tanarslan

2011

Composite Interfaces

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The application of artificial neural network (ANN) to predict the shear capacity of reinforced concrete (RC) beams retrofitted in shear by means of side-bonded fiber-reinforced polymer (FRP) is investigated in this paper. An extensive literature review has been carried out. In addition, ten shear deficient RC beams with different carbon fiber-reinforced polymer (CFRP) configurations were tested and added as data to the collected data. It was aimed to build an efficient and practical ANN model with parameters which can easily be obtained without any calculation and/or experimental investigation. The results are compared with the design guideline equations that emerge as predictions of the FRP contribution using the trained neural networks: these are in good agreement with the experimental results and better than those calculated from the theoretical guideline equations. Based on ANN results, a parametric study has been carried out to study the importance of different influencing parameters on the FRP contribution. Thereafter, a new simple expression is proposed for determining the contribution of externally bonded side-bonded FRP. Accordingly, the suggested design formula is capable of predicting the experimental FRP satisfactorily so that it can be admitted as an alternative to the existing guideline equations within the range of parameters covered in the study.

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Improving shear capacity of existing RC beams using external bonding of steel plates

Cited by 82 publications

References 6 publications

Experimental and Numerical Investigation of Shear Behavior of RC Beams Strengthened by Ultra-High Performance Concrete

Experimental and Numerical Investigation of Shear Behavior of RC Beams Strengthened by Ultra-High Performance Concrete

Strengthening of RC T-beams with perforated steel plates

Predicting the Capacity of RC Beams Strengthened in Shear with Side-Bonded FRP Reinforcements Using Artificial Neural Networks

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