Seismic Risk Assessment and Retrofitting, Ilki,A.,Karadogan,F.,Pala,S.,Yuksel,E, Editör, Springer, New-York, ss.387-426, 2009
Abstract Five to 10% of buildings in earthquake prone areas, with structural deficiencies
and non-structural partitioning walls are expected to collapse totally during
a severe earthquake. Relying on the encouraging early test results, transforming a
selected number of non-structural partitioning walls to structural walls has been considered
as one of the realistic preventive measures if sufficient reliability is achieved
both experimentally and theoretically. The major part of the recent experimental
and theoretical works of The Structural and Earthquake Engineering Laboratory of
Istanbul Technical University (ITU) has been devoted to achieve better understanding
of the seismic behavior of brittle partitioning walls which are generally ignored
in the design, rehabilitation design or evaluation stages of ordinary low-cost, lowrise,
reinforced concrete relatively old buildings. In this chapter the complementary
tests and analytical works carried out for this purpose are summarized to come up
with a cost-effective prescriptive solution to prevent the total collapse of buildings.
The proposed retrofitting technique is exemplified through the mathematical models
of strengthened buildings offered by codes which are reviewed as well. The
experimentally developed data such as the modulus of elasticity of clay brick walls,
damping ratios, shear strength of improved partitioning walls and earthquake load
reduction factors are referred in the analyses.