Şekil bellekli alaşım çubuklar ile betonarme çerçevelerin sismik performansının iyileştirilmesi

Turkey, which is located on an earthquake zone containing active fault lines, experiences earthquakes that cause loss of live and property. Considering that a serious part of the present population lives in cities near fault lines which can produce severe earthquakes and a significant part of our reinforced concrete buildings are substandard structures. It is important to upgrade the seismic performance of existing substandard RC buildings in order to avoid loss of live and property. In this master's thesis study, four 2/3 scaled and one-bay one-storey reinforced concrete frame representing existing substandard RC buildings with some deficiencies were designed and constructed in the laboratory conditions and then tested under displacement controlled quasi-static reversed cyclic loading experimentally. The first RC frame was the reference frame and rest of the frames were upgraded with conventional steel, Copper-Aluminum-Mangane (CuAlMn) and Nickel-Titanium (NiTi) Superelastic (SE) Shape Memory Alloys (SMAs) with the intent of enhancing seismic performance of non-code-conforming RC frames. The strengthening bars were attached to the substandard RC frame and then tested under the same quasi static cyclic loading. At the end of the eperiments, the SMAs showed a superelastic effect during the cyclic displacements reducing the residual displacements and the shape of hysteresis were flag-shaped due to inherit characteristics of SMAs.