Effect of infill wall and wall openings on the fundamental period of RC buildings

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KOÇAK A., Kalyoncuoǧlu A., Zengin B.

9th World Conference on Earthquake Resistant Engineering Structures, ERES 2013, A-Coruna, Spain, 8 - 10 July 2013, vol.132, pp.121-131 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 132
  • Doi Number: 10.2495/eres130101
  • City: A-Coruna
  • Country: Spain
  • Page Numbers: pp.121-131
  • Keywords: Infill wall, Period, Reinforced concrete frame, Wall openings
  • Istanbul Gelisim University Affiliated: Yes


The effect of infill walls to stiffness of the structures has been known for a long time and this effect has taken many of the earthquake regulations with empirical relationships and equations into account. However, in strength-based calculations, buildings are taken as bare frames and infill walls are effected as vertical load to system, whereas infill walls contribute to stiffness at the beginning of the earthquake and help meet seismic loads by incurring damage during an earthquake. In this study, contribution of infill walls to stiffness of the structure was analyzed in reinforced concrete framed and load-bearing buildings. Also, the effect of openings in the infill walls to stiffness was examined. © 2013 WIT Press.