Analysis of bondslip between concrete and steel bar in

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Analysis of bond-slip between concrete and steel bar in ...

2016-1-1  Develop a robust model for predicting the bond-slip between the concrete and steel ribbed bar at elevated temperatures. • Incorporate the bond-slip model into the Vulcan program for 3D analysis of reinforced concrete structures in fire.. The model has been validated against previous test results and good agreements are achieved.

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Analysis of bond-slip between concrete and steel bar in fire

2016-1-19  KEYWORDS: Bond-slip, concrete structures, fire, splitting failure. RESEARCH HIGHLIGHTS: Develop a robust model for predicting the bond-slip between the concrete and steel reinforced bar at elevated temperatures. Incorporate the bond-slip model into the Vulcan program for 3D analysis of reinforced concrete structures in fire.

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Analysis of bond-slip between concrete and steel bar in ...

By Jamal Khalaf, Zhaohui Huang, Mizi Fan, Diederichs, Pothisiri, Huanzi, Tepfers, Wang, Nielsen, Huang, Bazant, Huang, Timoshenko, Pantazopoulou, Aslani, Pothisiri ...

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Bond Slip Study Between Concrete and Steel Interface

The specimens were tested under four point bending to obtain i) relative slip between steel and concrete, ii) strain in the reinforcing bar and iii) mid span deflection of the beam specimens. The results show that the bond stress between reinforcing steel and concrete decreases after the exposure to elevated temperature while there relative ...

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3D FINITE ELEMENT MODELLING OF BOND-SLIP

2009-11-6  The behaviour of the concrete-steel interface must be described from stress-strain laws. Many constitutive relationships are presented in the literature. In this element, the contact surface between the steel bar and the concrete in the immediate vicinity of the steel bar is modeled by a bond stress-slip law which

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Experimental Analysis of Bond between Corroded Steel Bar ...

Based on the results of electrochemical corrosion and pullout tests, the bond properties between concrete and a steel bar under unconfined and TRC–confined conditions were comparatively analyzed in terms of the corrosion-induced cracking, failure mode, bond-slip curve, bond strength, and bond

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Three-Dimensional Finite-Element Analysis of Bond-Slip ...

The model simulates the bond-slip behavior between three-dimensional crescent ribbed bars and concrete. A total of 180 spring elements were created between the ribbed bar and concrete. This model simulates the gradational deformation from the loading end to the free end of the ribbed bar as closely as possible to the real situation.

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Theoretical model for the bond–slip relationship between ...

2017-8-14  This paper conducts a theoretical research into bond–slip relationship between ribbed steel bars and concrete. According to whether the concrete is cracked or not, the ascending part of the bond–slip curve is divided into two sections which are calculated by two different mechanical models.

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An Equivalent Method for Bar Slip Simulation in Reinforced ...

2020-3-13  In this paper, to include bond-slip effects in analysis of reinforced concrete frames, an indirect approach based on the results of pull-out test is implemented. This approach is an alternative to direct modeling of bond using nonlinear springs between the concrete and bar

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Analysis of the bond behaviour between prestressed

2016-12-15  In recent years, a two-node bond-link element has been developed to simulate the effect of bond-slip between the reinforcing steel and concrete at elevated temperatures, as shown in Fig. 5, . The framework of the bond-link element is used to integrate the current bond-slip model into 3D finite element model for simulating the bond ...

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Analysis of bond-slip between concrete and steel bar in ...

By Jamal Khalaf, Zhaohui Huang, Mizi Fan, Diederichs, Pothisiri, Huanzi, Tepfers, Wang, Nielsen, Huang, Bazant, Huang, Timoshenko, Pantazopoulou, Aslani, Pothisiri ...

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Bond-Slip Behavior between Stainless Steel Rebars and

Bond stress–slip diagrams for specimens with carbon steel bars and ( a) fcm = 28.31 MPa and ( b) fcm = 30.60 MPa. The proposed bond stress–slip relationship for each concrete strength is also plotted in the corresponding figures. For both the proposed bond stress relationships, the only varying parameter was. τ 1.

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Bond between Ultra-High Performance Concrete and

2016-8-3  All reinforced concrete structures rely on the bond relationship between the concrete and steel reinforcement bars. Studies on the bond between regular concretes, high strength concretes, other cementitious materials and steel bars have been available for some time now [e.g. Slater, 1920, Gilkey, 1956, ACI 2003].

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Experimental Analysis of Bond between Corroded Steel Bar ...

Based on the results of electrochemical corrosion and pullout tests, the bond properties between concrete and a steel bar under unconfined and TRC–confined conditions were comparatively analyzed in terms of the corrosion-induced cracking, failure mode, bond-slip curve, bond strength, and bond

Get price

Three-Dimensional Finite-Element Analysis of Bond-Slip ...

The model simulates the bond-slip behavior between three-dimensional crescent ribbed bars and concrete. A total of 180 spring elements were created between the ribbed bar and concrete. This model simulates the gradational deformation from the loading end to the free end of the ribbed bar as closely as possible to the real situation.

Get price

Experimental study of bond–slip in RC structural elements ...

2014-5-6  The interaction between concrete and reinforcing steel bars is usually described by the relationship between bond stress and slip. For the analysis of the experimental results, as has been commonly adopted in previous works (namely in CEB-217 [ 2 ] and CEB-FIP [ 4 ]), the bond stress was computed considering a constant bond stress distribution ...

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Theoretical model for the bond–slip relationship between ...

2017-8-14  This paper conducts a theoretical research into bond–slip relationship between ribbed steel bars and concrete. According to whether the concrete is cracked or not, the ascending part of the bond–slip curve is divided into two sections which are calculated by two different mechanical models.

Get price

CHAPTER 4: CONCRETE-STEEL BOND MODEL

2000-12-29  CONCRETE-STEEL BOND MODEL 4.1 Introduction The utility of reinforced concrete as a structural material is derived from the combi-nation of concrete that is strong and relatively durable in compression with reinforcing steel that is strong and ductile in tension. Maintaining composite action requires transfer of load between the concrete and steel.

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How to simulate slippage between steel reinforcing bars ...

Hi, I'm working on modelling bond between concrete and rebar. the bond law that describe load-slip response consists from two parts. ascending branch (exponential ) and descending branch (linear).

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Bond-Slip in Reinforced Concrete Elements Journal of ...

An elasto-plastic interface model developed by other writers is used to describe the bond–slip mechanism. The resulting model is attractive for the analysis of reinforced concrete problems at the macrostructural level since the explicit discretization of reinforcing bars and interface is not required, with the consequent computational cost ...

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Analysis of bond-slip between concrete and steel bar in ...

By Jamal Khalaf, Zhaohui Huang, Mizi Fan, Diederichs, Pothisiri, Huanzi, Tepfers, Wang, Nielsen, Huang, Bazant, Huang, Timoshenko, Pantazopoulou, Aslani, Pothisiri ...

Get price

Bond-Slip Behavior between Stainless Steel Rebars and

Bond stress–slip diagrams for specimens with carbon steel bars and ( a) fcm = 28.31 MPa and ( b) fcm = 30.60 MPa. The proposed bond stress–slip relationship for each concrete strength is also plotted in the corresponding figures. For both the proposed bond stress relationships, the only varying parameter was. τ 1.

Get price

Bond between Ultra-High Performance Concrete and

2016-8-3  All reinforced concrete structures rely on the bond relationship between the concrete and steel reinforcement bars. Studies on the bond between regular concretes, high strength concretes, other cementitious materials and steel bars have been available for some time now [e.g. Slater, 1920, Gilkey, 1956, ACI 2003].

Get price

Bond–slip behaviour of steel bars in low-strength concrete ...

2020-1-22  This paper presents the bond–slip models for deformed and plain bar types in low-strength concrete. The newly developed bond-strength models were used to account for the effect of different deficient variables typically found in non-engineered reinforced-concrete structures in developing countries, such as low-strength concrete, insufficient development length and low concrete cover.

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Experimental study of bond–slip in RC structural elements ...

2014-5-6  The interaction between concrete and reinforcing steel bars is usually described by the relationship between bond stress and slip. For the analysis of the experimental results, as has been commonly adopted in previous works (namely in CEB-217 [ 2 ] and CEB-FIP [ 4 ]), the bond stress was computed considering a constant bond stress distribution ...

Get price

THE STRESS VARIATION MODEL OF THE BOND STRESS

【Abstract】 Based on the experimental data,a stress variation nodel of the bond stress-slip relationship between steel bar and concrete is presented.The characteristic of the model is that the boundary conditions are satisfied very well;the effects of the properties of the materials, the concrete cover,the crack cpacing and the distance away from the cracked cross section are ...

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(PDF) Finite element modeling of reinforcement with bond

The bond between steel bars and concrete is an impor- ... The bond-slip behaviour at the steel-concrete interface also plays an important role for short beams, where the arch action is the main ...

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Fractal Analysis on Bond-Slip Behavior between Steel

Based on the experimental study of pull-out specimens on bond-slip behaviors between shaped steel and concrete in SRC (Steel Reinforced Concrete Structures), the graphic of the whole damage process are obtained. The crack propagation of concrete is fractal analyzed to calculate the fractal dimension. Relationships between fractal dimension and bond-slip behaviors of SRC are discussed.

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Theoretical model for the bond–slip relationship between ...

2017-8-14  This paper conducts a theoretical research into bond–slip relationship between ribbed steel bars and concrete. According to whether the concrete is cracked or not, the ascending part of the bond–slip curve is divided into two sections which are calculated by two different mechanical models.

Get price

How to simulate slippage between steel reinforcing bars ...

Hi, I'm working on modelling bond between concrete and rebar. the bond law that describe load-slip response consists from two parts. ascending branch (exponential ) and descending branch (linear).

Get price
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