Earthquake performance improvement of low rise RC buildings using high strength clay brick walls |
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| Authors: | E Yuksel P Teymur |
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| Institution: | 1. Structural and Earthquake Engineering Laboratory, Istanbul Technical University, 34469, Maslak-Istanbul, Turkey
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| Abstract: | Large number of vulnerable reinforced concrete (RC) buildings exists in earthquake prone areas. These low cost residential
and/or commercial buildings, which are three to seven-stories high, usually do not receive essential engineering services
during the construction phase. Finding cheap, easily applicable and occupant friendly retrofitting techniques are extremely
important to reduce the seismic risk of these buildings. As an attempt to this, a particular type of high strength clay brick
is studied to evaluate its potential for the structural retrofitting. A set of experiment was conducted to assess the important
mechanical characteristics of the infill walls made from these bricks. Also the performance of two RC frames retrofitted with
these walls, having different connection details between the wall and RC members was examined experimentally. The analytical
nonlinear static analyses of these specimens have been performed using SeismoStruct to achieve some model parameters for representing
the “infill wall model” in the program. Adaptive pushover and nonlinear time history analyses were conducted to investigate
the performance of a six storey representative RC frame retrofitted with these walls. Evaluation of the results obtained in
these analyses prove that this retrofitting technique introduces important strength and stiffness increments to the structure,
regarding its seismic demands, which are similar to the results obtained from the experiments. |
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