Strengthening Infilled RC Frames Against Biaxial Seismic Action

Demirel, İsmail Ozan
Yakut, Ahmet
Binici, Barış
Infill walls are widely used as formation, isolation and separation of closed spaces in reinforced concrete (RC) buildings. Although they are passive members under gravity loads, they contribute to the structural response in case of lateral loading. Majority of the past research regarding seismic response of infilled frames is limited to in-plane contribution of infill walls to the structural response. Aiming identification of in-plane (IP) versus out-of-plane (OOP) interaction of infilled RC frames, an extensive test campaign has been conducted. In addition to displacement based reversed cyclic IP loading, airbag induced OOP loading and simultaneous biaxial loading has been exerted on half scale, single RC frames infilled with traditional masonry as well as masonry strengthened with new techniques. Force-displacement responses, performances and distribution of damages under increasing displacements at IP and OOP directions were tracked and biaxial coupling of wall response was identified. It is observed that IP capacity decreased drastically in the presence of OOP loading which should be accounted during estimation of infilled frame performance. © 2018 Czech Technical University in Prague. All rights reserved.


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Citation Formats
İ. O. Demirel, A. Yakut, and B. Binici, “Strengthening Infilled RC Frames Against Biaxial Seismic Action,” Prague, Czech Republic, 2018, p. 855, Accessed: 00, 2021. [Online]. Available: