Numerical simulation for seismic performance evaluation of fibre reinforced concrete beam–column sub-assemblages

Abstract In the present study, performance of exterior beam–column sub-assemblages designed using normal concrete (NC) and steel fibre reinforced concrete (SFRC) is investigated. Nonlinear finite element method is adopted to analyse the sub-assemblages under reverse cyclic loading. To suit the material models for SFRC, available concrete model is judiciously modified. Cyclic behaviour of reinforcement, concrete (both normal and fibre reinforced) modeling based on fracture energy, bond–slip relations between concrete and steel reinforcement have been incorporated. The study also includes numerical investigation of crack and failure patterns, ultimate load carrying capacity, strain comparisons and formation of plastic hinges, load displacement hysteresis, energy dissipation and ductility. Experimentally validated numerical models are used to study the influence of various parameters on the performance of the beam–column sub-assemblage. Results obtained from experimental investigation were used for numerical validation. The influence of several parameters such as concrete strength, number of stirrups in the joint and amount of steel fibres on joint shear behaviour and strength of beam–column sub-assemblages are investigated. It is found that the failure mode cannot be favourably changed by adding fibres, if the compressive strength of the matrix is too low. It is also observed that the influence of fibre contribution to improve the residual tensile strength and fracture energy is significant and inter-dependent. Further, increase in residual tensile strength of FRC is found to be linear with increase in joint shear strength. In the present study, relationship for strength degradation depending on joint shear deformation for FRC has been established.

[1]  Ghazi Abu-Farsakh,et al.  Modeling the cyclic response of fiber reinforced concrete joints , 2007 .

[2]  Kang Hai Tan,et al.  Experimental and numerical investigation on progressive collapse resistance of reinforced concrete beam column sub-assemblages , 2013 .

[3]  Eberhard Berndt.  Tragwerke aus Beton, Stahlbeton und Spannbeton , 1989 .

[4]  Demetrios M. Cotsovos,et al.  Seismic response of steel fibre reinforced concrete beam–column joints , 2014 .

[5]  N. Bićanić.  Computational modelling of concrete structures : proceedings of the EURO-C Conference 2003, St. Johann im Pongau, Austria, 17-20 March 2003 , 2003 .

[6]  Gerd Remmel,et al.  Zum Zug- und Schubtragverhalten von Bauteilen aus hochfestem Beton , 1993 .

[7]  D. Hordijk.  Local approach to fatigue of concrete , 1991 .

[8]  L. Kützing.  Bruchmechanischer Ansatz zur Tragfähigkeitsanalyse von Stahlfaserbeton , 2002 .

[9]  J. F. Bonacci,et al.  On earthquake-resistant reinforced concrete frame connections , 1994 .

[10]  Mounir Khalil El Debs,et al.  Evaluation of the influence of the column axial load on the behavior of monotonically loaded R/C exterior beam–column joints through numerical simulations , 2008 .

[11]  F Fingerloos,et al.  DIN 1045, Ausgabe 2008 - Tragwerke aus Beton und Stahlbeton, Teil 1: Bemessung und Konstruktion - Kommentierte Kurzfassung (3., vollstaendig ueberarbeitete Auflage) , 2008 .

[12]  A. G. Tsonos.  Cyclic Load Behavior of Reinforced Concrete Beam-Column Subassemblages of Modern Structures , 2007 .

[13]  Gerardo M. Verderame,et al.  Study of the seismic behavior of external RC beam–column joints through experimental tests and numerical simulations , 2013 .

[14]  C. Henager,et al.  STEEL FIBROUS, DUCTILE CONCRETE JOINT FOR SEISMIC-RESISTANT STRUCTURES , 1977 .

[15]  Thomas Pfyl,et al.  Tragverhalten von Stahlfaserbeton , 2003 .

[16]  José R. Martí-Vargas,et al.  Behaviour of steel-fibre-reinforced normal-strength concrete slender columns under cyclic loading , 2012 .

[17]  Gustavo J. Parra-Montesinos,et al.  Highly Damage-Tolerant Beam-Column Joints Through Use of High-Performance Fiber-Reinforced Cement Composites , 2005 .

[18]  Saptarshi Sasmal,et al.  Numerical analysis of fiber composite-steel plate upgraded beam–column sub-assemblages under cyclic loading , 2011 .

[19]  Haeng-Ki Lee,et al.  Computational modeling of the response and damage behavior of fiber reinforced cellular concrete , 2004 .

[20]  Ziad Bayasi,et al.  Reduction of Lateral Reinforcement in SeismicBeam-Column Connection via Application of Steel Fibers , 2002 .

[21]  Saptarshi Sasmal,et al.  Numerical analysis of under-designed reinforced concrete beam-column joints under cyclic loading , 2010 .

[22]  Carlos Zanuy,et al.  Experimental assessment of connections for precast concrete frames using ultra high performance fibre reinforced concrete , 2013 .

[23]  Wancheng Yuan,et al.  Experimental and numerical investigation of the seismic performance of hollow rectangular bridge piers constructed with and without steel fiber reinforced concrete , 2013 .

[24]  B. Novák,et al.  Zum Tragverhalten von Rahmenknoten mit Stahlfaserbeton unter seismischer Belastung , 2013 .

[25]  Saptarshi Sasmal,et al.  Behaviour of fibre reinforced beam-column sub-assemblages under reversed cyclic loading , 2012 .

[26]  Andre Filiatrault,et al.  Seismic Performance of Code-Designed Fiber Reinforced Concrete Joints , 1994 .

[27]  A. Ilki,et al.  Precast fiber reinforced cementitious composites for seismic retrofit of deficient rc joints – A pilot study , 2013 .

[28]  N. Lakshmanan,et al.  Analytical and experimental investigations on seismic performance of exterior beam–column subassemblages of existing RC‐framed building , 2013 .

[29]  Andreas J. Kappos,et al.  Numerical study of confinement effectiveness in solid and hollow reinforced concrete bridge piers: Methodology , 2009 .

[30]  B. Luccioni,et al.  Numerical modeling of reinforced concrete beams repaired and strengthened with SFRC , 2015 .

[31]  James K. Wight,et al.  Towards deformation-based capacity design of RCS beam–column connections , 2003 .

[32]  P. V. Indira,et al.  Behaviour of hybrid fibre reinforced concrete beam–column joints under reverse cyclic loads , 2014 .

[33]  Achim Pietzsch,et al.  Modellbildung zur Simulation von Stahlfaserbeton unter hochdynamischer Belastung , 2008 .

[34]  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 .