Reliability assessment of FRP-confined concrete columns designed for buildings

Use of the FRP has been incorporated into design guidelines. Detailed probabilistic information to support selected resistance factors in code calibration exercises for Canadian design codes for the design of FRP-confined RC columns is currently lacking. Furthermore, since new load factors and companion load combination formats have been implemented in the 2005 edition of the National Building Code of Canada (NBCC), verification and calibration of the material resistance factors to be used for the design of the FRP-confined concrete columns are desirable. The objective of this study is to verify the adequacy of and/or calibrate the concrete resistance factor φc for FRP-confined RC columns. Analysis results suggest that to gain economic efficiency and without compromising safety levels, φc = 0.75 in designing the FRP-confined RC columns can be adopted to achieve the 50 year target reliability index of about 3.5.

[1]  H. Toutanji.  STRESS-STRAIN CHARACTERISTICS OF CONCRETE COLUMNS EXTERNALLY CONFINED WITH ADVANCED FIBER COMPOSITE SHEETS , 1999 .

[2]  J. Mander,et al.  Theoretical stress strain model for confined concrete , 1988 .

[3]  Arthur H. Nilson,et al.  Design of concrete structures , 1972 .

[4]  Wenliang Zhou,et al.  ASSESSMENT OF TIME-DEPENDENT RELIABILITY OF REINFORCED CONCRETE COLUMNS WITH UNCERTAIN LOAD ECCENTRICITY , 2000 .

[5]  Yan Xiao,et al.  Compressive Behavior of Concrete Confined by Various Types of FRP Composite Jackets , 2003 .

[6]  V. Karbhari,et al.  COMPOSITE JACKETED CONCRETE UNDER UNIAXIAL COMPRESSION--VERIFICATION OF SIMPLE DESIGN EQUATIONS , 1997 .

[7]  Antonio Nanni,et al.  FRP jacketed concrete under uniaxial compression , 1995 .

[8]  H. Toutanji,et al.  BEHAVIOR OF CONCRETE COLUMNS CONFINED WITH FIBER REINFORCED POLYMER TUBES , 1999 .

[9]  Amir Mirmiran,et al.  Model of Concrete Confined by Fiber Composites , 1998 .

[10]  Stephanie L. Walkup,et al.  Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures (ACI 440.2R-02) , 2005 .

[11]  J. Teng,et al.  BEHAVIOR AND MODELING OF FIBER REINFORCED POLYMER-CONFINED CONCRETE , 2004 .

[12]  Roberto Lopez-Anido,et al.  Environmental Aging of Fiber-Reinforced Polymer-Wrapped Concrete Cylinders , 2000 .

[13]  R. Bennett,et al.  Statistical Characterization of Fiber-Reinforced Polymer Composite Material Properties for Structural Design , 2006 .

[14]  Guney Ozcebe,et al.  High-Strength Concrete Columns under Eccentric Load , 2006 .

[15]  L. Lorenzis,et al.  Comparative Study of Models on Confinement of Concrete Cylinders with Fiber-Reinforced Polymer Composites , 2003 .

[16]  H. Tani.  Reliability of Evaluation , 1997 .

[17]  Yiu-Wing Mai,et al.  A Study on Polymer Composite Strengthening Systems for Concrete Columns , 2000 .

[18]  J. Teng,et al.  Strength Models for Fiber-Reinforced Plastic-Confined Concrete , 2002 .

[19]  Richard Sause,et al.  AXIAL BEHAVIOR OF REINFORCED CONCRETE COLUMNS RETROFIT WITH FRPC JACKETS , 1998 .

[20]  Shamin A. Sheikh,et al.  ANALYTICAL MOMENT-CURVATURE RELATIONS FOR TIED CONCRETE COLUMNS , 1992 .

[21]  Luc Taerwe,et al.  Tests on Axially Loaded Concrete Columns Confined by Fiber Reinforced Polymer Sheet Wrapping , 1999, SP-188: 4th Intl Symposium - Fiber Reinforced Polymer Reinforcement for Reinforced Concrete Structures.

[22]  Han Ping Hong,et al.  Reliability Evaluation of RC Columns , 1999 .

[23]  Poon-Hwei Chuang,et al.  Strength of Slender Reinforced Concrete Columns , 1998 .

[24]  Wenliang Zhou,et al.  MODELING ERROR OF STRENGTH OF SHORT REINFORCED CONCRETE COLUMNS , 2000 .

[25]  Hamid Saadatmanesh,et al.  STRENGTH AND DUCTILITY OF CONCRETE COLUMNS EXTERNALLY REINFORCED WITH FIBER COMPOSITE STRAPS , 1994 .

[26]  Sher Ali Mirza,et al.  Probabilistic study of strength of reinforced concrete members , 1982 .

[27]  V. M. Karbhari,et al.  Effect of Materials Architecture on Strengthening Efficiency of Composite Wraps for Deteriorating Columns in the North-East , 1994 .

[28]  Wenxing Zhou,et al.  Load factor calibration for the proposed 2005 edition of the National Building Code of Canada: Statistics of loads and load effects , 2003 .

[29]  Yan Xiao,et al.  Compressive Behavior of Concrete Confined by Carbon Fiber Composite Jackets , 2000 .

[30]  Wenliang Zhou,et al.  Statistical Analyses of Strength of Slender RC Columns , 2001 .

[31]  Hid N. Grouni,et al.  Methods of structural safety , 1986 .

[32]  Amir Mirmiran,et al.  Behavior of Concrete Columns Confined by Fiber Composites , 1997 .

[33]  Dimitri V. Val,et al.  Reliability of Fiber-Reinforced Polymer-Confined Reinforced Concrete Columns , 2003 .

[34]  Bruce Ellingwood,et al.  Development of a probability based load criterion for American National Standard A58 , 1980 .

[35]  Pierre Labossière,et al.  Axial Testing of Rectangular Column Models Confined with Composites , 2000 .

[36]  J. Teng,et al.  Design-oriented stress–strain model for FRP-confined concrete , 2003 .

[37]  Vistasp M. Karbhari,et al.  Probabilistic Based Design for FRP Strengthening of Reinforced Concrete , 2005 .