Tension-Stiffening Model for Cracked Flexural Concrete Members

Torres, Lluís; Almansa, Francisco López; Bozzo, Luis M.

doi:10.1061/(asce)0733-9445(2004)130:8(1242)

Cited by 62 publications

(29 citation statements)

References 11 publications

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“…Various tension-stiffening models suggest that tension-stiffening stress-strain relationship might be dependent on a number of parameters, the most important of which are the tensile strength of concrete, reinforcement ratio and modular ratio (Torres et al 2004;Gribniak et al 2015). As the starting point, Figure 1 plots the target points of normalized stress (σct/fct) and relative strain (εm/εcr) generated from the experimental programs.…”

Section: Derivation Of Tension-stiffening Lawmentioning

confidence: 99%

“…Tension-stiffening has been vastly researched in a variety of approaches (Torres et al 2004;Ng et al 2010;Lam et al 2010;Gilbert and Ranzi 2011). In the present analysis, a simplified approach based on smeared cracks is followed in which the stress in the concrete is taken as the combined stress due to both tensionstiffening and tension softening, collectively called the tension-stiffening.…”

Section: Introductionmentioning

confidence: 99%

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Tension-stiffening behaviour of reinforced concrete ties of various strength classes

Kaklauskas¹,

Tamulenas²,

Gribniak³

et al. 2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

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A new law of tension-stiffening for reinforced concrete (RC) ties is proposed in the present study. It is based on the test data of 11 experimental programs of RC elements of various strength classes reported in the literature. The experimental programs covered a wide range of characteristics of mechanical and geometrical parameters of specimens such as compressive strength of concrete, reinforcement ratio and diameter of reinforcement bars. By eliminating the effect of shrinkage from the test load-strain diagrams of the ties, a simple model with no dependence on reinforcement ratio could be derived. The proposed tension-stiffening law is compared with the formulation in Eurocode 2. Statistical analysis of strain predictions of RC ties based on Eurocode 2 was conducted. It is found that the Eurocode 2 significantly underestimated strains in the RC ties with the errors reaching 50% for the lightly reinforced members. Nevertheless, when shrinkage effect was accounted for in the test load-strain diagrams, the predictive capability of the Eurocode 2 formulation could be significantly improved.

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Section: Derivation Of Tension-stiffening Lawmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tension-stiffening behaviour of reinforced concrete ties of various strength classes

Kaklauskas¹,

Tamulenas²,

Gribniak³

et al. 2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

View full text Add to dashboard Cite

show abstract

“…This is referred to as the tension-stiffening phenomenon (Gilbert 2008;Ng et al 2010). Researches have confirmed that the deflection behaviour of cracked beams is significantly influenced by the tension-stiffening effect (Kaklauskas 2001;Torres et al 2004;Khalfallah 2008;Lam et al 2010), which should be duly considered in the SLS checking.…”

Section: Introductionmentioning

confidence: 96%

Generalised tension-stiffening relationship conforming to Chinese Design Code GB 50010-2010

Kaklauskas¹,

Gribniak²,

Ng³

et al. 2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

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A generalised stress-strain tension-stiffening relationship conforming to the Chinese Code for Design of Concrete Structures GB 50010-2010 is proposed. Based on the provisions in GB 50010-2010 for rigidity and curvature calculations of reinforced concrete flexural members, tension-stiffening relationships were derived from moment-curvature relations by means of the inverse technique for deformation analysis. A parameterized stress block for tension-stiffening was suggested. The proposed tension-stiffening model was applied to nonlinear finite element analysis of reinforced concrete beams. Good agreement between the analysis results based on the proposed model and those based on the codified formulas in GB 50010-2010 was achieved. The proposed model will be able to serve as a design aid for serviceability evaluation of concrete beams in general.

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“…Several models have been proposed for modeling the average tensile behavior of reinforcing bars and concrete in RC elements [12][13][14][15][16][17], while the number of recent studies on this subject shows 3 there are still debates on the accuracy of the previous models [4,[18][19][20][21]. Most of the available formulations for prediction of the crack spacing and width have been found to produce controversial results depending on the geometry of the specimens and reinforcement type [21].…”

Section: Introductionmentioning

confidence: 99%

Micromechanical modeling of tension stiffening in FRP-strengthened concrete elements

Ghiassi

Soltani

Sepehr

2018

Journal of Composite Materials

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This paper presents a micro-modeling computational framework for simulating the tensile response and tension stiffening behavior of FRP-strengthened RC elements. The total response of strengthened elements is computed based on the local stress transfer mechanisms at the crack plane including concrete bridging stress, reinforcing bars stress, FRP stress and the bond stresses at the bars-to-concrete and FRP-to-concrete interfaces. The developed model provides the possibility of calculating the average response of FRP, reinforcing bars and concrete as well as the crack spacing and crack widths. The model, after validation with experimental results, is used for a systematic parameter study and development of micromechanics-based relations for calculating the crack spacing, FRP critical ratio, debonding strength and effective bond length. Constitutive models are also proposed for concrete tension stiffening and average response of steel reinforcing bars in FRPstrengthened members as the main inputs of smeared crack modeling approaches.

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Tension-Stiffening Model for Cracked Flexural Concrete Members

Cited by 62 publications

References 11 publications

Tension-stiffening behaviour of reinforced concrete ties of various strength classes

Tension-stiffening behaviour of reinforced concrete ties of various strength classes

Generalised tension-stiffening relationship conforming to Chinese Design Code GB 50010-2010

Micromechanical modeling of tension stiffening in FRP-strengthened concrete elements

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