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    Öğe
    Relative story displacements and torsional effects caused by strength variations in concentrically braced frames
    (Gazi Univ, Fac Engineering Architecture, 2018) Aksar, Bora; Akbaş, Bülent; Kaya, Ercan Şerif; Çakır, Ferit
    This study will investigate the accidental torsional response in steel structures designed by CBFs due to the variation in strength of braces under strong earthquake ground motions. For this study, it is assumed that the variation in strength of braces would come from the expected yield stress (RyFy) rather than minimum specified yield stress (Fy) of brace member. For this purpose, inelastic torsional response of a three and nine-story building having perimeter CBFs having various brace strength configurations subjected to strong earthquake ground motions is investigated in detail. The results are presented in the form of base shear vs. roof displacement (pushover curve, capacity curve) and drift ratio through nonlinear dynamic response analyses.
  • [ X ]
    Öğe
    Seismic vulnerability of masonry Jack arch slabs
    (Pergamon-Elsevier Science Ltd, 2017) Özdemir, Muhammed Alperen; Kaya, Ercan Şerif; Aksar, Bora; Şeker, Burçin Şenol; Çakır, Ferit; Uçkan, Eren; Akbaş, Bülent
    After the industrial revolution, the use of jack arch slabs (JAS) was quite common in many historical structures with the availability of iron and steel in structural engineering field. JAS is a composite system of steel I-beams and masonry bricks, which are placed between steel I beams. This study focuses on the structural failures and weaknesses of masonry structures with JAS. The aims of this paper are to deeply illustrate the structural vulnerability of masonry JAS and to summarize the positive and negative effects of JAS on structural behavior. Within the scope of this study, this study focuses on historical American Boarding School for Girls in Merzifon, Turkey, which has one-way masonry JAS. It essentially assesses the structural behavior of the school and investigates the seismic vulnerability of JASs. For this purpose, the mechanical properties of the structural materials have been primarily evaluated with experimental tests. Then the finite element analyses have been carried out with the use of three dimension numerical model in order to investigate the structural behavior of the structure. (C) 2017 Elsevier Ltd. All rights reserved.