Model for post-yield tension stiffening and rebar rupture in concrete members

Lee, Seong-Cheol; Cho, Jae-Yeol; Vecchio, Frank J.

doi:10.1016/j.engstruct.2011.02.009

Cited by 41 publications

(26 citation statements)

References 9 publications

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“…In a cracked reinforced concrete member, concrete has some contribution to carry the tensile stresses due to the bond mechanism between the concrete and embedded reinforcing bars; this is called the tension stiffening effect [13,[16][17][18]. For the better prediction of the torsion-dominant behavior of reinforced concrete structures, the tension stiffening effect should be considered.…”

Section: Tensile Behavior Of Concretementioning

confidence: 99%

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Sectional Analysis Procedure for Reinforced Concrete Members Subjected to Pure Torsion

Choi

Lee

2019

Advances in Civil Engineering

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A sectional analysis procedure for reinforced concrete members subjected to pure torsion is presented in this paper. On the development of the analysis procedure, the reinforced concrete section is modeled with reinforced concrete elements subjected to biaxial stress states, on the basis of the thin-walled tube analogy. Each reinforced concrete element is analyzed with the modified compression field theory (MCFT) to take into account for compression softening and tension stiffening effects in cracked reinforced concrete. Considering analysis results of reinforced concrete elements, equilibrium, and compatibility on the section are checked. For verification of the developed analysis procedure, analytical predictions were compared with test results of 16 reinforced concrete beams subjected to a pure torsional load which are available in the literature. Comparison between predicted and experimentally obtained torque-twist responses showed that the proposed procedure is capable of capturing the ultimate torsional capacity as well as the angle of twist within a reasonable range.

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Section: Tensile Behavior Of Concretementioning

confidence: 99%

“…e transformation matrix for concrete and reinforcement in equations (15) and (18), respectively, can be evaluated from the following equation:…”

Section: Stiffness Matrix Formulationmentioning

confidence: 99%

Sectional Analysis Procedure for Reinforced Concrete Members Subjected to Pure Torsion

Choi

Lee

2019

Advances in Civil Engineering

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“…The hysteretic model of the reinforcement is selected according to the Seckin (1981) model, which can incorporate the Bauschinger effect. The tensionstiffening effect is also considered for the FEM analysis according to the model proposed by Seong-Cheol Lee (Lee et al, 2011). The shear wall specimen is modelled in VecTore2 by using two-dimensional plane stress elements.…”

Section: Analytical Studymentioning

confidence: 99%

Seismic evaluation of flexure–shear dominated RC walls in moderate seismic regions

Mehmood

Hussain

Warnitchai³

2015

Magazine of Concrete Research

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The current study focuses on the typical design practice for reinforced concrete shear walls prevailing in low to moderate seismic regions such as Thailand. A reversed cyclic quasi-static loading test is conducted to assess the seismic performance of a large-scale flexure-shear dominated reinforced concrete shear wall specimen with an aspect ratio of 2. A strong coupling effect of flexure and shear responses is observed, even though the shear strength is about 1 . 5 times the shear corresponding to the nominal moment capacity of the specimen. The final mode of failure is concrete crushing and the buckling of vertical reinforcement in the boundary zones. An analytical study is also conducted as a part of the verification of the experimental results. The analytical results of a commonly adopted fibre modelling approach for reinforced concrete shear walls are compared with a finite-element model based on modified compression field theory. Results of analytical study indicate that neglecting the coupling of flexure and shear responses can lead to unreliable predictions of the ductility and energy dissipation capacity of flexure-shear dominated reinforced concrete shear walls such as the one considered in this study.

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“…This behavior is represented by the local bond slip relationship shown in Figure e), which is commonly derived from pull tests performed on short bonded lengths such that the reinforcement remains elastic . It should be noted that the change in bond properties after yielding of the reinforcement is an area of active research but is outside of the scope of this paper.…”

Section: Introductionmentioning

confidence: 99%

Local bond slip behavior of steel reinforcing bars embedded in ultra high performance fibre reinforced concrete

Sturm

Visintin

2018

Structural Concrete

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The local bond stress slip behavior is a fundamental property required for the analysis and design of concrete structures at both serviceability and at ultimate limit. The addition of fibers has been shown to significantly improve the bond between normal strength concrete and steel reinforcement but little work has investigated the bond between reinforcing and ultra high performance fibre reinforced concrete (UHPFRC). In this paper a series of 69 pull tests are carried out on UHPFRC with either short straight or long hooked steel fibers including mixes where the two fiber types have been blended. The results of this study were combined with the results from existing literature to regress a material model for the bond slip behavior between UHPFRC and ribbed steel reinforcing bars. Importantly, it is shown that models for normal strength fiber reinforced concrete cannot be extrapolated to UHPFRC.

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Model for post-yield tension stiffening and rebar rupture in concrete members

Cited by 41 publications

References 9 publications

Sectional Analysis Procedure for Reinforced Concrete Members Subjected to Pure Torsion

Sectional Analysis Procedure for Reinforced Concrete Members Subjected to Pure Torsion

Seismic evaluation of flexure–shear dominated RC walls in moderate seismic regions

Local bond slip behavior of steel reinforcing bars embedded in ultra high performance fibre reinforced concrete

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