Yazar "Yurdakul, Muhammet" seçeneğine göre listele

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    An Investigation on Seismically Isolated Buildings in Near-Fault Region
    (İdris Karagöz, 2022) Sesli, Hasan; Tonyalı, Zeliha; Yurdakul, Muhammet
    In this study, the effects of far-fault, near-fault and pulse-type ground motions on a seismically isolated building were investigated. The 3-dimensional finite element model of the building was created in the SAP2000 software and the dynamic characteristics were determined numerically. Three different earthquake ground motion characteristics of 1999 Düzce Earthquake in Turkey were selected to evaluate the structural behavior. The record motions of the Mudurnu and Sakarya station were selected as far-fault ground motion. For near-fault ground motion, 1999 Düzce Earthquake Düzce and Lamont 1062 station records were selected. 1999 Düzce Earthquake Bolu and IRIGM 487 station records were selected as pulse-type ground motion. The behavior of the building supported by friction pendulum isolators with a displacement capacity of 48 cm was compared with the analysis results of fixed-base building. The displacement values of the 1st, 4th and 7th floors of the building were obtained. The effects of earthquake ground motions and isolator were evaluated according to floor displacement values. The seismically isolated building has a less structural demand depending on the vibration mode period under pulse-like near-fault ground motions.
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    The effect of positioning of seismic isolators in a reinforced concrete building
    (İdris Karagöz, 2025) Yurdakul, Muhammet; Yıldız, Mehmet Burak
    Construction costs are increasing day by day. The importance of building the safest structures at the lowest cost is also increasing. For this purpose, it is necessary to design the structure in the best possible way without sacrificing safety. One way to ensure buildings are safe even during severe earthquakes is to include seismic isolation at the design stage. Judging by studies, seismic isolators are generally located at the lowest story of the building. However, there is no sufficient study to determine the location of the seismic isolator in the lowest column. In this study, the seismic isolator was located at the lower end and the top of the lowest story of the RC building to compare the effectiveness of its positioning. A high-damping rubber bearing (HDRB) was used as the seismic isolation device. Also, the effect of the absence of the diaphragm placed above the isolation level was investigated. As a result of the study, the necessary rebar of the RC building isolated at the top end of the column was less than 15% compared to the building isolated at the lower end of the columns for the beams. The base shear force of the building with seismic isolator located at the upper end of the column was 2.7% greater than that the building with the seismic isolator located at the lower end of the column.