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Seismic behavior evaluation of exterior beam-column joints with headed or hooked bars using nonlinear finite element analysis

  • Rajagopal, S. (Department of Civil Engineering, Mepco Schlenk Engineering College) ;
  • Prabavathy, S. (Department of Civil Engineering, Mepco Schlenk Engineering College) ;
  • Kang, Thomas H.K. (Department of Architecture and Architectural Engineering, Seoul National University)
  • Received : 2013.11.03
  • Accepted : 2014.03.08
  • Published : 2014.11.25

Abstract

This paper studies the response of seismic behavior of reinforced concrete exterior beam-column joints under reversal loading with different anchorages and joint core details. The joint core was detailed without much confinement (group-I) and/or with proposed X-cross bars in the core (group-II). The beam longitudinal reinforcement's anchorages were designed as per ACI 352 (headed bars), ACI 318 (conventional $90^{\circ}$ bent hooks) and IS 456 ($90^{\circ}$ bent hooks with extended tails). The nonlinear finite element analysis response of the beam-column joints was studied, along with initial and progressive cracks up to failure. The experimental and analytical results were compared and presented in this paper to make more scientific conclusions.

Keywords

reinforced concrete;exterior beam-column joint;headed bars;hooked bars;nonlinear finite element analysis;crack

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