Path-dependent cyclic stress-strain relationship of reinforcing bar including buckling

Abstract In this paper, the formulation and verification of a cyclic stress–strain relationship of reinforcing bars are presented. The tension envelope comprises an elastic range, a yield plateau and a hardening zone. The compression envelope also includes a linear elastic range followed by a non-linear buckling model. The cyclic loops follow Giuffre–Menegotto–Pinto equations with some modifications to account for the effect of buckling. A complete path-dependent cyclic constitutive model is then obtained by combining the equations representing the two monotonic envelopes and the cyclic loops. Comparison with bare bar test results shows that the proposed model could reasonably predict the cyclic behaviour of reinforcing bars including the post-buckling loops.

[1]  Koichi Maekawa,et al.  Reinforcement Stability and Fracture of Cover Concrete in Reinforced Concrete Members , 2002 .

[2]  Robert Park,et al.  Confining Reinforcement for Concrete Columns , 1994 .

[3]  L. L. Dodd,et al.  MODEL FOR PREDICTING CYCLIC BEHAVIOR OF REINFORCING STEEL , 1995 .

[4]  Egor P. Popov,et al.  Hysteretic Model of Ordinary and High-Strength Reinforcing Steel , 1998 .

[5]  Comite Euro-International du Beton.  Rc Elements Under Cyclic Loading: State of the Art Report , 1996 .

[6]  Koichi Maekawa,et al.  Post-Peak Cyclic Behavior and Ductility of Reinforced Concrete Columns , 1999 .

[7]  Giorgio Monti,et al.  Nonlinear Cyclic Behavior of Reinforcing Bars Including Buckling , 1992 .

[8]  M. Menegotto,et al.  Method of analysis of cyclically loaded RC plane frames including changes in geometry and non-elastic behavior of elements under normal force and bending , 1973 .

[9]  Maurizio Papia,et al.  Instability of Longitudinal Bars in RC Columns , 1988 .

[10]  Mario E. Rodriguez,et al.  Cyclic Stress-Strain Behavior of Reinforcing Steel Including Effect of Buckling , 1999 .

[11]  Kent Gylltoft,et al.  SLENDER HIGH-STRENGTH CONCRETE COLUMNS SUBJECTED TO ECCENTRIC LOADING , 1998 .

[12]  S. Mau.  EFFECT OF TIE SPACING ON INELASTIC BUCKLING OF REINFORCING BARS , 1990 .

[13]  Sozen,et al.  STRESS-STRAIN RELATIONSHIPS OF REINFORCING BARS SUBJECTED TO LARGE STRAIN REVERSALS , 1973 .

[14]  S T Mau,et al.  Inelastic buckling of reinforcing bars , 1989 .

[15]  B. Kato,et al.  Mechanical Properties of Steel under Load Cycles Idealizing Seismic Action , 1979 .

[16]  C. Scribner.  Reinforcement Buckling in Reinforced Concrete Flexural Members , 1986 .

[17]  John B. Mander,et al.  SEISMIC DESIGN OF BRIDGE PIERS , 1984 .

[18]  M. Menegotto.  Method of Analysis for Cyclically Loaded R. C. Plane Frames Including Changes in Geometry and Non-Elastic Behavior of Elements under Combined Normal Force and Bending , 1973 .

[19]  R. Dhakal,et al.  Modeling for Postyield Buckling of Reinforcement , 2002 .

[20]  Stavroula J. Pantazopoulou,et al.  DETAILING FOR REINFORCEMENT STABILITY IN RC MEMBERS , 1998 .