Yazar "Odacioglu, Orhan Gazi" seçeneğine göre listele

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    Öğe
    Determination of Minimum Shear Wall Ratio for the Compatibility Behavior of Shear Wall-Frame in Earthquake Resistant Design of Reinforced Concrete Structural Systems
    (Gazi Univ, 2022) Dogan, Orhan; Genc, Yunus; Odacioglu, Orhan Gazi
    Increasing in the number of floors in building design against earthquake, it becomes necessary to use reinforced concrete shear walls in order not to exceed the bearing capacity of elements and the limit of horizontal displacements and to prevent damage of frame infill walls. When the structures exposed to earthquakes are examined, the shear wall elements are exposed to greater shear stresses as a result of the lack of enough reinforced concrete shear walls in some buildings and also horizontal displacements exceed the limit values and unexpected premise brittle shear failures occur in the shear walls. It is known that with the addition of partial shear walls to the reinforced concrete frame system, the frame system behavior has changed into a mixed system behavior and with the further increase of the shear wall ratio, it transforms into a shear wall behavior similar to cantilever beam.There are many studies on determination of the shear wall area required depending on only a single floor area to limit horizontal displacements. Herein, in order to let the building exhibit shear wall behavior, during the preliminary design stage of the columns and shear walls, the minimum value of the ratio of the shear wall area to the area of all floors has been tried to be determined taking into account the ratio of the moment taken by the shear walls to the building base moment, building cost increase depending on the increase in the quantity of the steel reinforcement and shear wall-frame behavior compatibility. For this purpose, a five-storey symmetrical building in plan was designed consisting of a frame system in accordance with the rules of the Turkish Building Earthquake Code (TBEC-2018). Firstly, elevator shear wall was added to the model consisting of the beam-column frame system, and then by adding symmetrical shear walls in various ratios to this model, a total of 10 models were created.
  • [ X ]
    Öğe
    In situ determination of the mechanical performance of the steel rods anchored on an existing masonry building wall
    (Springer India, 2021) Dogan, Orhan; Celik, Fatih; Odacioglu, Orhan Gazi; Sevim, Ozer
    In order to strengthen masonry building walls against horizontal earthquake loads, steel plates or in situ reinforced concrete layers need to be attached to one or both surfaces of the walls. Because the stiffness of the wall and the stiffness of the strengthening element will be different against earthquake loads, the elastic connectors are needed to be attached to the strengthening wall to comply with an existing wall. These connectors must have sufficient and well-known strength, flexibility, spacing, diameter, and depth to resist shear and pull-out forces that will occur between the wall and the strengthening element. And it is of great importance to determine the partially interacted pull-out and direct shear performances of the widely known flexible and commonly used steel rod connectors depending on the diameter and embedment depth in strengthening analysis. In this study, since the partially interacted pull-out test on chemically anchored steel rods has shown more realistic failure in comparison to the fully interacted pull-out test and both the partially interacted pull-out test and the shear test are quite difficult and time-consuming in comparison to the fully interacted pull-out test, the steel rods were anchored on an existing a five stories masonry building constructed using clay block bricks, mortar and plaster in Turkey and then three different types of tests were conducted on steel rods to determine the relation between the fully and partially interacted pull out performances and also between fully interacted pull out and shear performances. Very significant linear equations were obtained for the shear performance and partially interacted pull-out performance of the anchor rods in accordance with the fully interacted pull-out performance of the steel rod connectors for different embedment depth and hole.