A multi-fiber approach for modeling corroded reinforced concrete structures

Taking into account the specific behavior of the steel/concrete interface is of primary importance to predict properly the structural response of RC structures. Several constitutive models have been proposed in the literature within the framework of nonlinear finite element method (2D and 3D). Such approaches usually lead to high computational costs due to the large number of degrees of freedom. In the present paper, a multifiber-based model including the steel/concrete interface behavior is proposed. Despite the fact that the kinematics of the multi-fiber approach is based on the theory of beams, this simplified strategy accounts for local phenomena such as the relative sliding between concrete and steel. Furthermore, this steel/concrete interface constitutive model can be extended to model the loss of bond properties due to corrosion. The numerical implementation aspects are described and local responses at the Gauss point level are exposed in the cases of monotonic loadings with and without corrosion. The efficiency and the reliability of the proposed approach are tested on structural case studies which highlight a good agreement between numerical and experimental results. This multifiber-based model provides a pertinent tool for the engineers concerns with the structural assessment of degraded reinforced concrete structures.

[1]  Michael Ortiz,et al.  An analysis of a new class of integration algorithms for elastoplastic constitutive relations , 1986 .

[2]  Arnaud Castel,et al.  Mechanical behaviour of corroded reinforced concrete beams—Part 2: Bond and notch effects , 2000 .

[3]  Jacky Mazars,et al.  Damage model for concrete‐like materials coupling cracking and friction, contribution towards structural damping: first uniaxial applications , 2000 .

[4]  P. Gergely,et al.  Mechanics of Bond and Slip of Deformed Bars in Concrete , 1967 .

[5]  Surendra P. Shah,et al.  Comparison of Two Accelerated Corrosion Techniques for Concrete Structures , 2007 .

[6]  A. Almusallam,et al.  Effect of degree of corrosion on the properties of reinforcing steel bars , 2001 .

[7]  Rasheeduzzafar,et al.  EFFECT OF REINFORCEMENT CORROSION ON BOND STRENGTH , 1996 .

[8]  Rasheeduzzafar,et al.  EFFECT OF REINFORCEMENT CORROSION ON FLEXURAL BEHAVIOR OF CONCRETE SLABS , 1996 .

[9]  Panagiotis Kotronis,et al.  SIMPLIFIED MODELLING STRATEGIES TO SIMULATE THE DYNAMIC BEHAVIOUR OF R/C WALLS , 2005 .

[10]  A. S. Al-Gahtani,et al.  EVALUATION OF REPAIR MATERIALS FOR FUNCTIONAL IMPROVEMENT OF SLABS AND BEAMS WITH CORRODED REINFORCEMENT. , 1997 .

[11]  Mario Plos,et al.  Bond behaviour of corroded reinforcing steel bars in concrete , 2006 .

[12]  Pierre Mivelaz,et al.  Etanchéité des structures en béton armé , 1996 .

[13]  J. Rodriguez,et al.  LOAD CARRYING CAPACITY OF CONCRETE STRUCTURES WITH CORRODED REINFORCEMENT , 1997 .

[14]  C. Cremona,et al.  Isotropic continuum damage mechanics for concrete under cyclic loading: Stiffness recovery, inelastic strains and frictional sliding , 2010 .

[15]  Dario Coronelli,et al.  Structural Assessment of Corroded Reinforced Concrete Beams: Modeling Guidelines , 2004 .

[16]  Adnan Ibrahimbegovic,et al.  Thermodynamic-based interface model for cohesive brittle materials : Application to bond slip in RC structures , 2006 .

[17]  Per Kettil,et al.  Analytical model for the bond-slip behaviour of corroded ribbed reinforcement , 2012 .

[18]  Takafumi Noguchi,et al.  Evaluation of the bond properties between concrete and reinforcement as a function of the degree of reinforcement corrosion , 2002 .

[19]  M. S. Elgarf,et al.  Flexural Strength of Concrete Beams with Corroding Reinforcement , 1999 .

[20]  Jacky Mazars,et al.  Numerical modelling for earthquake engineering: the case of lightly RC structural walls , 2004 .

[21]  C. O. Frederick,et al.  A mathematical representation of the multiaxial Bauschinger effect , 2007 .

[22]  Jean Lemaitre,et al.  A Course on Damage Mechanics , 1992 .

[23]  G. Arliguie,et al.  Mechanical behaviour of corroded reinforced concrete beams—Part 1: Experimental study of corroded beams , 2000 .

[24]  G. J. Al-Sulaimani,et al.  Influence of Corrosion and Cracking on Bond Behavior and Strength of Reinforced Concrete Members , 1990 .

[25]  Xi-la Liu,et al.  Modeling bond strength of corroded reinforcement without stirrups , 2004 .

[26]  J. G. Cabrera,et al.  Deterioration of concrete due to reinforcement steel corrosion , 1996 .

[27]  Olivier Maurel,et al.  Modelling of the flexural behaviour of RC beams subjected to localised and uniform corrosion , 2003 .

[28]  Yingang Du,et al.  Influence of corrosion on the friction characteristics of the steel/concrete interface , 2007 .

[29]  Suchart Limkatanyu,et al.  RESPONSES OF REINFORCED CONCRETE MEMBERS INCLUDING BOND-SLIP EFFECTS , 2000 .

[30]  Enrico Spacone,et al.  FIBRE BEAM–COLUMN MODEL FOR NON‐LINEAR ANALYSIS OF R/C FRAMES: PART I. FORMULATION , 1996 .

[31]  Xiao-Hui Wang,et al.  Bond strength modeling for corroded reinforcements , 2006 .