SciELO - Scientific Electronic Library Online

 
vol.64 issue2The liquefaction potential of the upper quaternary sands of the Cape Flats, Western Cape, South AfricaThe cost-effectiveness of water augmentation and management: Assessing the Unit Reference Value author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Article

Indicators

Related links

  • On index processCited by Google
  • On index processSimilars in Google

Share


Journal of the South African Institution of Civil Engineering

On-line version ISSN 2309-8775
Print version ISSN 1021-2019

Abstract

VISAGIE, P W W; HAAS, T N  and  VAN ZIJL, G P A G. Investigating the behaviour factor and seismic response of structural wall systems in low- to medium-rise buildings when soil-structure interaction is considered. J. S. Afr. Inst. Civ. Eng. [online]. 2022, vol.64, n.2, pp.38-55. ISSN 2309-8775.  http://dx.doi.org/10.17159/2309-8775/2022/v64no2a4.

Practicing engineers typically follow linear methods for seismic design and assessment, confining their approach to the requirements of SANS 10160-4 (SANS 2017). This generally leads to a conservative design, leaving little space to apply additional tools for design refinement. Soil-structure interaction has beneficial effects for most building structures under seismic action. However, incorporating soil-structure interaction in the analysis influences the fundamental period, damping and ductility, and will therefore influence the behaviour factor prescribed by design codes. The behaviour factor is necessary for linear methods (force-based methods) to predict the nonlinear behaviour of the structure. This investigation assessed the current behaviour factor for reinforced concrete walls in low- to medium-rise buildings, as prescribed by SANS 10160-4 (SANS 2017), when soil-structure interaction is incorporated in the analysis. The buildings were initially designed and detailed using linear methods, with the prescribed behaviour factor, and then tested using nonlinear methods that do not require the use of a behaviour factor.

Keywords : seismic response; soil-structure interaction; structural wall system; bahaviour factor; damping; ductility.

        · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License