Modeling Local Bond Stress–Slip Relationships of Reinforcing Bars Embedded in Concrete with Different Strengths

Tang, Chao-Wei; Cheng, Chiu-Kuei

doi:10.3390/ma13173701

Cited by 24 publications

(25 citation statements)

References 30 publications

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“…From the previous analysis, it can be known that the bond stress–slip relationship varied along the longitudinal axis of the steel bar. To describe this change, the local bond–stress relationship was obtained by a general local pull-out test [ 48 ]. Then, we determined a position function

and expressed the bond stress–slip relationship at different embedded lengths x of the steel bar by the product of the two.…”

Section: Resultsmentioning

confidence: 99%

Modeling Uniaxial Bond Stress–Slip Behavior of Reinforcing Bars Embedded in Concrete with Different Strengths

Tang

2021

Materials

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This paper aims to study the uniaxial bond stress–slip characteristics of reinforcing bars embedded in concrete with different strengths. Tests were conducted on tension–pull specimens that had a cross-sectional dimension with a reinforcing bar embedded in the center section. The experimental variable was the concrete compressive strength (20, 40, and 60 MPa). The test results show that in the specimen subjected to any fixed load, the maximum value of the concrete strain occurred around the central position, and its value increased as the compressive strength of the concrete increased. Depending on the embedded position of the steel bars, the bond stress–slip relationship was also different. In addition, the analytical results indicate that the proposed bond stress–slip constitutive relationship is very accurate in describing the true bond stress–slip relationship.

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and expressed the bond stress–slip relationship at different embedded lengths x of the steel bar by the product of the two.…”

Section: Resultsmentioning

confidence: 99%

Modeling Uniaxial Bond Stress–Slip Behavior of Reinforcing Bars Embedded in Concrete with Different Strengths

Tang

2021

Materials

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“…Analytical models can assist with interaction modelling. In this context, researchers developed analytical models for predicting bond strength by regression analysis [2][3][4][5][6][7][8][9][10][11][12]. However, the scope of using the proposed formula suggested by researchers must be studied before use.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Study on Predicting Bond-Slip Relationship of Reinforced Concrete using Surface Based Cohesive Behavior

Minhajul Bari Prince,

Debasish Sen

2024

Frattura Ed Integrità Strutturale

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Overall structural integrity and load transfer between concrete and reinforcement enabling composite action relies on the bond between concrete and reinforcement. Bond strength determination of reinforced concrete is an essential task that a pullout test can determine. Experimental pullout behaviour can be affected by various parameters, such as concrete and steel strength, boundary conditions, etc. Therefore, a parametric study on pullout tests is time-consuming. In addition, measurements of internal stress-strain components and damages of constitutive materials are also difficult in experimental endeavours. In this context, finite element (FE) models should be developed to perform a parametric study with cost and time-saving. This study proposes a finite element modeling strategy of reinforced concrete under pullout force by using the expected failure mechanism to predict bond-slip behaviour in ABAQUS. In FE models, surface-to-surface cohesive interaction behaviour was used to assign interaction between reinforcement and concrete. The proposed modelling strategy was validated with available experimental data from four reference specimens, having all possible failures (i.e., pullout, splitting, and splitting-pullout) under pullout loading. The finite element analysis showed that the proposed FE modeling strategy performed well in predicting bond-slip behaviour in elastic regions. Additionally, maximum bond stresses were predicted satisfactorily, except for the splitting failure pattern, using the proposed FE modelling strategy.

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“…Thus, it was necessary to assess the safety of the historical and existing buildings to formulate effective maintenance interventions. The bond behavior between the bars and concrete was an essential performance, which had significant effects on the mechanic performance of concrete structures [ 2 , 3 ]. The experimental results indicate the bond performance not only determines the anchorage length of the plain bars, but affects the bearing and displacement capacities of the concrete structures.…”

Section: Introductionmentioning

confidence: 99%

Bond Behavior of Plain Bars in Concrete under Reversed Cyclic Loading

Zhao

Liu

et al. 2023

Materials

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Plain bars with a diameter of 10 mm are widely used in reinforced concrete buildings, and the bond behavior between the bars and concrete has an essential effect on the seismic performance of concrete structures. Thus, to assess the safety of old buildings and repaired buildings with normal concrete, it was necessary to further investigate the bond performance of the plain bars in the concrete. The bonding tests under monotonic and reversed cyclic loading were carried out on the specimens reinforced with plain bars, and the influences of concrete grade and embedment length on the bond behavior were taken into consideration. The results indicate the maximum bond stress under reversed cyclic loading is less than that under monotonic loading, and this is the same for corresponding slip for the same test parameters. The concrete compressive strength positively affects the maximum bond stress, whereas the embedment length has a negative effect. Based on the elasticity analysis and test data fitting, the expressions of bond stress at characteristic points on the bond stress–slip curves were carried out. Consequently, the bond stress–slip model was established, which could be applied to calculate the bond stress–slip relationships under monotonic and reversed cyclic loading. By comparison between the test curves and proposed model, a good agreement is observed, which indicates that the proposed model can be used to predict the bond stress–slip curve of plain bars in concrete.

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Modeling Local Bond Stress–Slip Relationships of Reinforcing Bars Embedded in Concrete with Different Strengths

Cited by 24 publications

References 30 publications

Modeling Uniaxial Bond Stress–Slip Behavior of Reinforcing Bars Embedded in Concrete with Different Strengths

Modeling Uniaxial Bond Stress–Slip Behavior of Reinforcing Bars Embedded in Concrete with Different Strengths

A Numerical Study on Predicting Bond-Slip Relationship of Reinforced Concrete using Surface Based Cohesive Behavior

Bond Behavior of Plain Bars in Concrete under Reversed Cyclic Loading

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