Comparative in-plane pushover response of a typical RC rectangular wall designed by different standards

  • Dashti, Farhad (Department of Civil and Natural Resources Engineering, University of Canterbury) ;
  • Dhakal, Rajesh P. (Department of Civil and Natural Resources Engineering, University of Canterbury) ;
  • Pampanin, Stefano (Department of Civil and Natural Resources Engineering, University of Canterbury)
  • Received : 2014.02.28
  • Accepted : 2014.05.08
  • Published : 2014.11.25


Structural walls (also known as shear walls) are one of the common lateral load resisting elements in reinforced concrete (RC) buildings in seismic regions. The performance of RC structural walls in recent earthquakes has exposed some problems with the existing design of RC structural walls. The main issues lie around the buckling of bars, out-of plane deformation of the wall (especially the zone deteriorated in compression), reinforcement getting snapped beneath a solitary thin crack etc. This study compares performance of a typical wall designed by different standards. For this purpose, a case study RC shear wall is taken from the Hotel Grand Chancellor in Christchurch which was designed according to the 1982 version of the New Zealand concrete structures standard (NZS3101:1982). The wall is redesigned in this study to comply with the detailing requirements of three standards; ACI-318-11, NZS3101:2006 and Eurocode 8 in such a way that they provide the same flexural and shear capacity. Based on section analysis and pushover analysis, nonlinear responses of the walls are compared in terms of their lateral load capacity and curvature as well as displacement ductilities, and the effect of the code limitations on nonlinear responses of the different walls are evaluated. A parametric study is also carried out to further investigate the effect of confinement length and axial load ratio on the lateral response of shear walls.


reinforced concrete;shear wall;design codes;comparative performance;confinement length;axial load ratio


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