Effect of Infill Wall and Wall Openings on Fundamental Period of RC Buildings

Koçak A., Kalyoncuoğlu A., Zengin B.

in: Earthquake Resistant Engineering Structures IX, Brebbia,Hernandez, Editor, WIT Press , Southampton, pp.121-131, 2013

  • Publication Type: Book Chapter / Chapter Research Book
  • Publication Date: 2013
  • Publisher: WIT Press
  • City: Southampton
  • Page Numbers: pp.121-131
  • Editors: Brebbia,Hernandez, Editor
  • Yıldız Technical 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.