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    A Study on the Determination of Damage Levels in Reinforced Concrete Structures during the Kahramanmaras Earthquake on February 06, 2023
    (EDP Sciences, 2023) Isik, Ercan; Shendkar, Mangeshkumar R.; Avcil, Fatih; Büyüksaraç, Aydin; Deshpande, Sandip S.
    Planning for settlement and urban redevelopment following disastrous earthquakes depends on the early detection and control of structural damage. The first damage assessment to be made immediately after the earthquake should be done as practically and quickly as possible. Within the scope of the study, the general causes of damage to the reinforced-concrete buildings in the region affected by the Kahramanmaras earthquake couple dated 06 February 2023, which can be called the disaster of the century for Türkiye, and the first damage assessments were made using the European Macroseismic Scale (EMS-98) for 30 different reinforced concrete structures. This method gives six different building examples for each of the five different damage levels. Considering the buildings used in damage level, information is given about the causes and consequences of the damage. In general, it is the main cause of insufficient reinforced concrete frame damage as well as the effects of structural negativities such as soft storey, short columns, etc. © ICSTCE 2023
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    Damage evaluation of masonry buildings during Kahramanmaras (Turkiye) earthquakes on February 06, 2023
    (Techno-Press, 2023) Isik, Ercan; Buyuksarac, Aydin; Avcil, Fatih; Arkan, Enes; Aydin, M. Cihan; Ulu, Ali Emre
    The Mw=7.7 (Pazarcik-Kahramanmaras) and Mw=7.6 (Elbistan-Kahramanmaras) earthquakes that occurred in Turkiye on 06.02.2023 with 9 hours' intervals, caused great losses of life and property as the biggest catastrophe in the instrumental period. The earthquakes affecting an area of 14% of the country were enormous and caused a great deal of loss of life and damage. Numerous buildings have collapsed or damaged at different levels, both in the city centers and in rural areas. Within the scope of this study, masonry structure damage built from different types of materials in the earthquake region was taken into consideration. In this study, the damage and causes of such masonry structures that do not generally receive engineering services were examined and explained in detail. Insufficient interlocking between wall-wall and wall-roof, inadequate masonry, lack of horizontal and vertical bond beams, usage of low-strength materials, poor workmanship, and heavy earthen roof are commonly caused to structural damages. Separation at the corner point and out-of-plane mechanism in structural walls, and heavy earthen roof damages are common types of damage in masonry structures.
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    The effect of local soil conditions on structure target displacements in different seismic zones
    (2022) Avcil, Fatih; Işık, Ercan; Büyüksaraç, Aydın
    The local soil conditions of the region where the structure is located are one of the important parameters taken into account in the evaluation and design of structures under the influence of earthquakes. In this study, the effect of different local soil conditions on target displacement values of reinforced-concrete (RC) structures in different seismic regions was investigated. For this purpose, four different settlements within each earthquake zone specified in the previous earthquake zone map were taken into account. Structural analyzes for a sample reinforced concrete structure using four different local soil conditions were performed for all residential units separately. The values predicted in the current earthquake hazard map for the considered locations were repeated for four different local soil classes. For the settlements, the predicted values in the last two maps were compared. As the soil properties improved as a result of the structural analysis, the displacement values predicted for the building performance level took lower values.