Plastic Hinge Rotation Capacity of Reinforced HPFRCC Beams

High performance fiber reinforced cementitious composite (HPFRCC) materials exhibit strain hardening behavior under tensile loading. This strain hardening response occurs after the first cracking of the material. In this paper, experimental and parametric studies were conducted to assess the influence of the compressive strength, loading type, and tension reinforcement ratio (ρ) on the ultimate deformation characteristics of reinforced HPFRCC beams. The analytical and numerical results for simply supported beams with different amounts of tension reinforcement ratios under three different loading conditions are presented and compared with each other and with the available experimental data. The plastic hinge rotation capacity increases as the loading condition changes from the concentrated load in the middle to the uniform load, and it reaches a maximum in the case of two-point loading. The effect of loading type on the plastic hinge rotation capacity of the reinforced beams with a high amount of ρ is not as significant as that of lightly reinforced beams. Based on the analytical results, new simple equations as a function of the tension reinforcement ratio and the loading type are proposed. Analytical results indicate that the proposed equations can be used with sufficient accuracy to calculate the plastic hinge rotation capacity of reinforced HPFRCC beams.

[1]  H. Tanaka,et al.  Effect of lateral confining reinforcement on the ductile behaviour of reinforced concrete columns , 1990 .

[2]  Mark A. Bradford,et al.  Nonlinear analysis of composite beams with partial shear interaction by means of the direct stiffness method , 2009 .

[3]  Oguzhan Bayrak,et al.  High-strength concrete columns under simulated earthquake loading , 1997 .

[4]  Jing Li,et al.  Evolution and calibration of a numerical model for modelling of hybrid-fibre ECC panels under high-velocity impact , 2011 .

[5]  Hosein Naderpour,et al.  Plastic Hinge Rotation Capacity of Reinforced Concrete Beams , 2007 .

[6]  Victor C. Li,et al.  Development of a self-consolidating engineered cementitious composite employing electrosteric dispersion/stabilization , 2003 .

[7]  Victor C. Li,et al.  Engineered Cementitious Composites (ECC) Material, Structural, and Durability Performance , 2008 .

[8]  S L Billington,et al.  Tension, Compression and Cyclic Testing of Engineered Cementitious Composite Materials , 2004 .

[9]  S Watson,et al.  SIMULATED SEISMIC LOAD TESTS ON REINFORCED CONCRETE COLUMNS. DISCUSSION AND CLOSURE , 1994 .

[10]  Antoine E. Naaman,et al.  Evaluation of the Ultimate Steel Stress in Partially Prestressed Concrete Members , 1985 .

[11]  Hwai Chung Wu,et al.  Conditions for Pseudo Strain-Hardening in Fiber Reinforced Brittle Matrix Composites , 1992 .

[12]  Kittinun Sirijaroonchai.  A macro-scale plasticity model for high performance fiber reinforced cement composites , 2009 .

[13]  Arne Hillerborg,et al.  Rotational capacity of reinforced concrete beams , 1988 .

[14]  V. Li,et al.  DESIGN OF ENGINEERED CEMENTITIOUS COMPOSITES (ECC) FOR PROCESSING AND WORKABILITY REQUIREMENTS , 2003 .

[16]  Tong-Seok Han,et al.  Simulation of Highly Ductile Fiber-Reinforced Cement-Based Composite Components Under Cyclic Loading , 2003 .

[17]  Mohsen Ali Shayanfar,et al.  Element size effects in nonlinear analysis of reinforced concrete members , 1997 .

[18]  Supat Weramontanasuk Suwannakarn,et al.  Post-cracking characteristics of high performance fiber reinforced cementitious composites , 2009 .

[19]  Jin-keun Kim,et al.  Prediction of ECC tensile stress-strain curves based on modified fiber bridging relations considering fiber distribution characteristics , 2010 .

[20]  H. Horii,et al.  Analytical model for fracture behaviors of pseudo strain-hardening cementitious composites. , 1996 .

[21]  Ahmed Ghobarah,et al.  SEISMIC RELIABILITY ASSESSMENT OF EXISTING REINFORCED CONCRETE BUILDINGS , 1998 .

[22]  Shamim A. Sheikh,et al.  WHAT DO WE KNOW ABOUT CONFINEMENT IN REINFORCED CONCRETE COLUMNS? (A CRITICAL REVIEW OF PREVIOUS WORK AND CODE PROVISIONS) , 1989 .

[23]  Amr S. Elnashai,et al.  Numerical modeling and analysis of ECC structures , 2013 .

[24]  Shamim A. Sheikh,et al.  CONFINED CONCRETE COLUMNS WITH STUBS , 1993 .

[25]  N. Shrive,et al.  Cyclic loading and fracture mechanics of Ductal® concrete , 2007 .

[26]  A W Hill,et al.  ULTIMATE LOAD DESIGN OF CONCRETE STRUCTURES. , 1962 .

[27]  Victor C. Li,et al.  High-Early-Strength Engineered Cementitious Composites for Fast, Durable Concrete Repair—Material Properties , 2011 .

[28]  T. Paulay,et al.  Seismic Design of Reinforced Concrete and Masonry Buildings , 1992 .

[29]  H. A. Sawyer,et al.  Design of Concrete Frames For Two Failure Stages , 1965 .

[30]  C. Hung,et al.  Hybrid Rotating/Fixed-Crack Model for High-Performance Fiber-Reinforced Cementitious Composites , 2010 .

[31]  M. Fardis,et al.  Deformations of Reinforced Concrete Members at Yielding and Ultimate , 2001 .

[32]  Dawn E. Lehman,et al.  Lumped-Plasticity Models for Performance Simulation of Bridge Columns , 2008 .

[33]  G. Keoleian,et al.  Design of Green Engineered Cementitious Composites for Improved Sustainability , 2008 .

[34]  V. Li,et al.  Reinforced and Prestressed Concrete Using HPFRCC Matrices , 1996 .

[35]  M. Priestley,et al.  Ductility of Square-Confined Concrete Columns , 1982 .

[36]  Mjn Priestley,et al.  STRENGTH AND DUCTILITY OF CONCRETE BRIDGE COLUMNS UNDER SEISMIC LOADING , 1987 .

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