Seismic response of autoclaved aerated concrete masonry infill walls under in-plane and out-of-plane seismic demands

Binici, Barış
Canbay, Erdem
Uzgan, Ugur
Yakut, Ahmet
Infill walls of reinforced concrete (RC) frames exhibit significant vulnerability when subjected to in‐plane (IP) and out‐of‐plane (OOP) seismic demands. Despite the vast number of tests investigating the behavior of brick masonry infill walls in RC frames, past research is concerned with infill walls made up of autoclaved aerated concrete (AAC) blocks. In this study, six single‐bay, single‐story, half‐scaled RC frames were tested under the action of IP cyclic displacement excursions and/or OOP pressure. The objectives of the tests were to investigate the IP behavior of AAC infilled RC frames constructed with or without fiber mesh reinforced plaster to observe the influence of the OOP loads on the IP deformation capacity. It was found that AAC infill walls increased the strength and stiffness of the test frames compared to the bare frame specimen. The specimens without the plaster overlay experienced cracking at inter‐story drift ratio of about 0.35%. The ultimate drift ratio corresponding to a 20% lateral strength loss occurred at about 2% interstory drift ratio. The presence of plaster, on the other hand, delayed the visual cracking of the walls up until 1% interstory drift ratio. The OOP loads applied on the frame by using an airbag system was found to significantly reduce the IP deformation capacity of AAC framed infill walls. These results show that AAC infill walls may not sustain the IP and OOP seismic demands expected in RC frame buildings and innovative solutions are needed to limit the damage.


Seismic upgrading of reinforced concrete frames with structural steel elements
Özçelik, Ramazan; Binici, Barış; Department of Civil Engineering (2011)
This thesis examines the seismic internal retrofitting of existing deficient reinforced concrete (RC) structures by using structural steel members. Both experimental and numerical studies were performed. The strengthening methods utilized with the scope of this work are chevron braces, internal steel frames (ISFs), X-braces and column with shear plate. For this purpose, thirteen strengthened and two as built reference one bay one story portal frame specimens having 1/3 scales were tested under constant grav...
Vulnerability assessment of reinforced concrete moment resisting frame buildings
Erduran, Emrah; Yakut, Ahmet (2007-04-01)
A detailed seismic performance assessment procedure has been developed for reinforced concrete (RC) frame buildings with masonry infill walls. The procedure is based on member damage functions, in terms of interstory drift ratios. These functions are developed for the primary components, namely, columns, beams, and infill walls. For developing these functions, analytical investigations to determine the influence of several parameters on the damageability of components were combined with experimental data. A...
Seismic Retrofit of Deficient RC Structures with Internal Steel Frames
ÖZÇELİK, RAMAZAN; Akpinar, Ugur; Binici, Barış (2011-12-01)
This paper describes an experimental study on internal steel frames (ISFs) to retrofit seismically deficient reinforced concrete (RC) frames. One reference and six strengthened frame specimens were tested under constant gravity load and cyclic lateral displacement excursions. Installation of the ISF with and without anchors to the RC frame was examined. Test results showed that the snug tight ISF installed inside an RC frame may suffice to realize the benefit of implementing ISFs. If the horizontal shear st...
Seismic Strengthening with Precast Concrete Panels - Theoretical Approach
Baran, Mehmet; Canbay, Erdem; Tankut, Tugrul (2010-01-01)
An economical, structurally effective and practically applicable seismic retrofitting technique has been developed on the basis of the principle of strengthening the existing hollow brick infill walls by using high strength precast concrete panels. The technique would not require evacuation of the building and would be applicable without causing much disturbance to the occupant. For this purpose, a total of eighteen reinforced concrete frames with hollow brick infill walls were tested under reversed cyclic ...
Analytical study on seismic retrofitting of reinforced concrete buildings using steel braces with shear link
Durucan, Cengizhan; Dicleli, Murat (2010-10-01)
This paper is focused on a proposed seismic retrofitting system (PRS) configured to upgrade the performance of seismically vulnerable reinforced concrete (RC) buildings. The PRS is composed of a rectangular steel housing frame with chevron braces and a yielding shear link connected between the braces and the frame. The retrofitting system is installed within the bays of an RC building frame to enhance the stiffness, strength and ductility of the structure. The PRS and a conventional retrofitting system usin...
Citation Formats
B. Binici, E. Canbay, U. Uzgan, Z. ERYURTLU, and A. Yakut, “Seismic response of autoclaved aerated concrete masonry infill walls under in-plane and out-of-plane seismic demands,” 2018, vol. 2, Accessed: 00, 2020. [Online]. Available: