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Computers and Concrete
  Volume 10, Number 6, December 2012 , pages 663-681
DOI: https://doi.org/10.12989/cac.2012.10.6.663
 


Plastic hinge length of circular reinforced concrete columns
Yu-Chen Ou, Raditya Andy Kurniawan, Dimas Pramudya Kurniawan and Nguyen Dang Nguyen

 
Abstract
    This paper presents a parametric study of the plastic hinge length of circular reinforced concrete columns using a three-dimensional finite element analysis method, and using the Taguchi robust design method to reduce computational cost. Parameters examined include the longitudinal reinforcing ratio, the shear span-to-depth ratio, the axial force ratio and the concrete compressive strength. The study considers longitudinal reinforcement with yield strengths of 414 MPa and 685 MPa, and proposes simplified formulas for the plastic hinge length of circular reinforced concrete columns, showing that increases in plastic hinge length correlate to increases in the axial load, longitudinal reinforcing and shear span-todepth ratios. As concrete strength increases, the plastic hinge length decreases for the 414 MPa case but increases for the 685 MPa case.
 
Key Words
    reinforced concrete columns; plastic hinge length; Taguchi method; finite element analysis.
 
Address
Yu-Chen Ou, Raditya Andy Kurniawan, Dimas Pramudya Kurniawan
and Nguyen Dang Nguyen: Department of Construction Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
 

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