Prediction of load–deflection behavior of multi-span FRP and steel reinforced concrete beams

Dündar, Cengiz; Tanrikulu, A. Kamil; Frosch, Robert J.

doi:10.1016/j.compstruct.2015.06.018

Cited by 32 publications

(21 citation statements)

References 24 publications

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“…More recently, Dundar et al [23] proposed a more advanced model to calculate deflections of FRP or steel RC elements. The model considers either the a) curvature distribution along the member, or b) effective flexibility models available in the literature.…”

Section: Deflection Prediction Of Frp Rc Membersmentioning

confidence: 99%

“…The FE model was proven effective at predicting the deflection of beams over the complete load history, but such FE analyses are mainly suitable for research purposes. More recently, Dundar et al [23] presented a general computational algorithm to calculate deflections of FRP RC beams based on effective flexibilities of members in the cracked state using a) curvature distributions along the member, or b) available effective stiffness models. Using this model, Dundar et al predicted accurately the complete load-deflection history of FRP RC beams, but it is also necessary to verify the accuracy of such model using additional test data.…”

Section: Introductionmentioning

confidence: 99%

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A practical method for determining shear crack induced deformation in FRP RC beams

Imjai

Guadagnini

Garcia

et al. 2016

Engineering Structures

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This article proposes a practical semi-empirical method for determining shear crack-induced deformations in Glass Fibre Reinforced Polymer (GFRP) Reinforced Concrete (RC) beams. Current design guidelines neglect shear and shear crack-induced deformations in the calculation of deflections of GFRP RC beams. However, shear-induced deformations can be up to 30% of the total beam deflection due to the lower stiffness of GFRP bars compared to steel. To calculate the component of deflection due to shear action and crack opening, the proposed model uses a 'single fictitious inclined crack' with a width equal to the sum of the individual effective shear crack widths. Twelve shear tests were conducted on six RC beams reinforced internally with GFRP bars considering different reinforcement types and test parameters. The additional deformation due to shear cracks calculated by the proposed model is then used to predict the overall deformations of such beams up to failure. It is shown that, in comparison to current design guidelines, the proposed model predicts more accurately the total deflection of FRP RC beams at both service and ultimate loads. This article contributes towards the development of more accurate models to assess the overall shear deflection behaviour of FRP RC beams so as to balance the performance, serviceability and economic viability of structures.

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Section: Deflection Prediction Of Frp Rc Membersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A practical method for determining shear crack induced deformation in FRP RC beams

Imjai

Guadagnini

Garcia

et al. 2016

Engineering Structures

View full text Add to dashboard Cite

show abstract

“…The load-deflection curve of unstiffen and stiffen panels has been studied, and a comparison made between the ultimate load result from the FEM and the ultimate load result from EN 1993-1-5 (Timmers & Lener, 2016). Moreover, Dundar et al (2015) focused on the mid-span location and generated load-midspan deflection curve.…”

Section: Introductionmentioning

confidence: 99%

Comparison the Stiffened Plate Deflection of T and RSF Stiffeners on Marine Structure Subjected Force and Pressure

Reabroy

2020

Marit. Technol. Res.

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This work aims to compare the vertical deflection between perfect T and Rectangular Support Flange (RSF) stiffeners when subjected to forces and pressures. The geometry of stiffener models comprises the conventional T stiffener model design, used in double hull oil tankers, and the RSF stiffener, which is of a modified type whose design is based on T stiffener specifications. The deflection theories of simply supported beam were studied by the double integral method. Finite Element Analysis (FEA) is used to design and simulate the vertical deflection and the maximum equivalent stress of stiffeners when subjected to force and pressure under the same boundary condition. Various stiffener models are studied, and the FEA results presented graphically. The theoretical and FEA results are in good agreement. The load-deflection curves show that the performance of the RSF stiffener is superior to that of the conventional T stiffener.All rights reserved

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“…Due to this fact, the same amount of reinforcement exhibits larger deflections and crack widths in FRP reinforced concrete beams than in steel reinforced concrete beams. Hence, the design of such beams is typically governed by the serviceability limit state, which makes accurate determination of deflection extremely important (Dundar et al 2015 [1]).…”

Section: Introductionmentioning

confidence: 99%

Prediction of effective moment of inertia for hybrid FRP-steel reinforced concrete beams using the genetic algorithm

Kheyroddin

Maleki

2017

NMCE

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The use of Concrete beams reinforced with a combination of fiber reinforced polymer (FRP) and steel bars has increased dramatically in recent years, due to improvement in strength and flexural ductility simultaneously. In this paper, we proposed a new equation for estimating the effective moment of inertia of hybrid FRP-steel reinforced concrete (RC) beams on the basis of the genetic algorithm and experimental results.The genetic algorithm is used to optimize the percent error between experimental and analytical responses. In the proposed equation, additional coefficients are considered in order to take into account the specific properties of FRP bars. The effects of the elastic modulus of FRP and steel bars, the hybrid reinforcement ratio, A f /A s , and the different level of loading on the effective moment of inertia has been considered.These coefficients are used to modify Branson's equation to compute the effective moment of inertia of concrete beams reinforced by FRP and steel bars. Comparison between the experimental and predicted results showed the adequacy of the model used in predicting the effective moment of inertia, and deflection of hybrid-RC beams.

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Prediction of load–deflection behavior of multi-span FRP and steel reinforced concrete beams

Cited by 32 publications

References 24 publications

A practical method for determining shear crack induced deformation in FRP RC beams

A practical method for determining shear crack induced deformation in FRP RC beams

Comparison the Stiffened Plate Deflection of T and RSF Stiffeners on Marine Structure Subjected Force and Pressure

Prediction of effective moment of inertia for hybrid FRP-steel reinforced concrete beams using the genetic algorithm

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