Comparison Of Seismic Performance Of
Strengthened Historical Masonry Buildings
Under Different Structural Designs
Author(s)
O. Isler & V. Oztas
Abstract
The subject of this study is the investigation of historical masonry buildings
under earthquake loads. During any earthquake the behaviour of the structural
system of masonry buildings is very complicated, and the shear resistances are
very low. The masonry building’s wall materials, thickness, height and
workmanship have a significant affect on the stability and shear resistance of the
buildings. The dimensions of wall openings for windows and doors and their
placing in the wall, and continuous walls or non continuous walls are also
important for stability. In order to prepare a weak masonry building for a
possible and heavily damaging earthquake, the structural system needs
strengthening to increase its seismic performance. In this study, in order to
strengthen masonry buildings, two different strengthening structural models are
considered. Firstly, the masonry building is strengthened with the additional RC
shear walls, secondly; the walls of the masonry building are strengthened with
the FRP/GFRP grid bonded. For example, an existing and historical masonry
building chosen from Istanbul is considered. Their structural systems, with
strengthened and non strengthened examples, are analyzed under earthquake
loads. The results of the analyses are investigated and the obtained seismic
performances of the different strengthened structural systems are compared
between each other. Consequently, seismic performance and lateral
displacements are improved by strengthening with additional RC shear walls
and/or FRP/GFRP grid bonded systems. The analyses also show the
displacements of the strengthened systems are reduced and these are improved 9
and 4 times according to the present building, respectively. Finally, to maintain
Keywords
masonry building, earthquake, strengthen
Related Book
Other papers in this volume
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