Analysis of Reinforced Concrete Beams Strengthened with FRP Laminates

El-Mihilmy, Mahmoud T.; Tedesco, Joseph W.

doi:10.1061/(asce)0733-9445(2000)126:6(684)

Cited by 87 publications

(40 citation statements)

References 10 publications

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“…To achieve the calculating procedure, following assumptions should be made: (1) linear strain distribution through the full depth of the beam, which means there is no relative slip on both the concrete/FRP and FRP/steel plate interfaces; (2) the concrete carries no tensile stress; (3) at the ultimate stage, the failure mode is the rupture of CFRP and (4) the damage on the concrete due to the pre-drilling is neglected. [29][30][31] Moreover, Hognestad's and the linear elastic stress-strain models are respectively adopted for concrete and CFRP. The elastic-perfectly plastic model is used for the tensile reinforcements and steel plate.…”

Section: Simplified Analytical Procedures Of the Load Capacitymentioning

confidence: 99%

An approach of steel plate hybrid bonding technique to externally bonded fibre-reinforced polymer strengthening system

Zhang

Cheng

2018

International Journal of Distributed Sensor Networks

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The strengthening efficiency of externally bonded fibre-reinforced polymer to concrete structure is usually limited owing to the unexpected debonding of fibre-reinforced polymer laminates. In this study, a new steel plate hybrid bonding technique was developed to supply additional anchorage for traditional externally bonded fibre-reinforced polymer strengthening system. With this approach, the fibre-reinforced polymer debonding can be effectively prevented. Moreover, the stress concentration, which probably results in a premature fracture of fibre-reinforced polymer laminates as that performed for available hybrid bonding anchorage techniques, can be eliminated by introducing a steel plate between the mechanical fasteners and fibre-reinforced polymer strips. To verify the effect of this new method, 21 carbon fibrereinforced polymer-strengthened beams were studied on the flexural behaviours. Test results showed that, compared to available hybrid bonding anchorage techniques, steel plate hybrid bonding is more capable of making the full use of fibre-reinforced polymer laminates and further enhance the ultimate capacity and ductility of externally bonded fibrereinforced polymer-strengthened beams. Based on the experimental results, the effect of interfacial treatment, ply of carbon fibre-reinforced polymer and mechanical fastener spacing on the failure mode and ultimate load ratio were discussed. Eventually, a simplified analytical procedure was proposed and verified to estimate the flexural resistance of steel plate hybrid bonding -fibre-reinforced polymer-strengthened beam.

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Section: Simplified Analytical Procedures Of the Load Capacitymentioning

confidence: 99%

An approach of steel plate hybrid bonding technique to externally bonded fibre-reinforced polymer strengthening system

Zhang

Cheng

2018

International Journal of Distributed Sensor Networks

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“…For a strengthened beam, the deflection can be obtained using traditional mechanics principles Assuming the relationship of mean sectional curvature ϕ m and external moment M x is tri-linear throughout the different states, as shown in Fig.12, the mean sectional curvature ϕ m can be given as [47,[49][50][51]:…”

Section: Displacement Of Strengthened Beammentioning

confidence: 99%

Flexural behaviour of reinforced concrete beams strengthened with a composite reinforcement layer: BFRP grid and ECC

Zheng

Wang

Brigham

2016

Construction and Building Materials

153

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Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. strengths. An analytical model is also presented to predict the load-deflection responses of the strengthened beams, which was validated through comparisons with the test results.

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“…Radi ojačanja konstrukcijskih elemenata, projektanti se najčešće odlučuju za vanjske obloge od čelika [2][3][4][5][6], ploče od polimera ojačanog vlaknima (eng. Fibre Reinforced Polymer -FRP) [7][8][9] te AB obloge [10][11][12][13][14][15]. Altun [16] je odredio i eksperimentalno usporedio mehanička svojstva AB greda podvrgnutih savijanju prije i nakon oblaganja AB oblogom.…”

Section: Uvodunclassified

Ojačanje ab greda tehnikom povezivanja s predgotovljenom ab pločom

2015

JCE

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Ojačanje ab greda tehnikom povezivanja s predgotovljenom ab pločom U radu se analizira ponašanje AB greda ojačanih predgotovljenim AB pločama pravokutnog i U-presjeka. Provedeno je eksperimentalno istraživanje s ciljem ocjenjivanja učinkovitosti ojačanja predgotovljenim pločama. To je istraživanje popraćeno i 2-D nelinearnom analizom uz primjenu metode konačnih elemenata (NLFEA). Rezultati NLFEA analize su pokazali dobro podudaranje s rezultatima ispitivanja. Smatra se da je predloženi postupak dobra alternativa ojačanju pomoću AB obloga te da je taj postupak praktičan, ekonomičan i pouzdan za zgrade ili mostove s većim brojem jednakih greda. RC beam strengthening using precast RC plate bonding techniqueThe behaviour of RC beams strengthened with precast RC plates of rectangular and U cross-section is studied in the paper. An experimental investigation was conducted to assess effectiveness of strengthening with precast plates. The investigation was supported with the 2-D nonlinear finite element analysis (NLFEA). The NLFEA results showed a good level of correlation with test results. The proposed technique is considered to be a good alternative to RC jacketing and the technique is practical, economical and reliable for buildings or bridges with a greater number sisof similar beams.

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Analysis of Reinforced Concrete Beams Strengthened with FRP Laminates

Cited by 87 publications

References 10 publications

An approach of steel plate hybrid bonding technique to externally bonded fibre-reinforced polymer strengthening system

An approach of steel plate hybrid bonding technique to externally bonded fibre-reinforced polymer strengthening system

Flexural behaviour of reinforced concrete beams strengthened with a composite reinforcement layer: BFRP grid and ECC

Ojačanje ab greda tehnikom povezivanja s predgotovljenom ab pločom

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