Occupant friendly seismic retrofit (OFR) of RC framed buildings

Baran, M
Duvarci, M
Tankut, T
Ersoy, U
Ozcebe, G
An innovative non-evacuation retrofitting technique is being developed for RC buildings. The introduction of cast-in-place RC infill walls is very effective, but involves messy construction work and requires evacuation. The proposed method transforms existing hollow masonry infill walls by reinforcing them with precast concrete panels epoxy glued to the wall and frame members. Three tests have so far been performed under reversed cyclic loading. The first specimen was an ordinary RC frame with hollow brick infill walls, to serve as a reference specimen. The infills of the other two specimens were strengthened with epoxy glued precast concrete panels. Both strengthened specimens exhibited superior behaviour and capacity, indicating the potential of the retrofitting technique.


In service seismic strengthening of RC framed buildings
Tankut, Tugrul; Ersoy, Ugur; Ozcebe, Guney; Baran, Mehmet; Okuyucu, Dilek (2005-06-01)
An innovative non-evacuation retrofitting technique has been developed for RC buildings, which form the major portion of the existing stock in Turkey. The introduction of cast-in-place RC infill walls, connected to existing frame members, is known to be very effective in improving the overall seismic performance. However, this technique is not suitable since it involves messy construction work and requires evacuation. The idea behind the proposed method is to transform existing hollow masonry infill walls i...
Analytical study on seismic retrofitting of reinforced concrete buildings using steel braces with shear link
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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...
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Flat-slab RC buildings exhibit several advantages over conventional moment-resisting frames. However, the structural effectiveness of flat-slab construction is hindered by its alleged inferior performance under earthquake loading. Although flat-slab systems are widely used in earthquake prone regions of the world, fragility curves for this type of construction are not available in the literature. This study focuses on the derivation of such fragility curves using medium-rise flat-slab buildings with masonry...
Seismic retrofit of buildings with backbone dampers
Shaban, Nefize; Ozdemir, Seda; Caner, Alp; Akyüz, Uğurhan (2017-01-01)
Dampers have been effectively used in new designs and seismic retrofit of old structures in many parts of the world. The common seismic retrofit practice in Turkey is almost purely based on stiffening the structure with additional shear walls or adding braces to limit the excessive seismic drifts. Such an approach usually results in expensive interior works and enlargements of foundations. The stiffening of the structure typically results in attracting more seismic force. Utilization of dampers as seismic p...
Seismic strengthening of reinforced concrete frames by precast concrete panels
BARAN, MEHMET; Susoy, M.; Okuyucu, D.; Tankut, T. (Thomas Telford Ltd., 2011-05-01)
An innovative occupant-friendly retrofitting technique has been developed for reinforced concrete (RC)-framed structures which constitute the major portion of the existing building stock. The idea is to convert the existing hollow brick infill wall into a load-carrying system acting as a cast-in-place concrete shear wall by reinforcing it with relatively thin high-strength precast concrete panels epoxy bonded to the plastered infill wall and epoxy connected to the frame members. In this study, results of 11...
Citation Formats
M. Baran, M. Duvarci, T. Tankut, U. Ersoy, and G. Ozcebe, “Occupant friendly seismic retrofit (OFR) of RC framed buildings,” 2003, vol. 29, p. 433, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/68176.