Yazar "Ulukaya, Serhan" seçeneğine göre listele

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    In-Plane Shear Behavior of Traditional Masonry Walls
    (Taylor & Francis Inc, 2017) Doran, Bilge; Koksal, H. Orhun; Aktan, Selen; Ulukaya, Serhan; Oktay, Didem; Yuzer, Nabi
    The evaluation of the material properties of masonry built with traditional lime mortar remains largely unclear to what extent the complex mechanical behavior of its constituents and sampling difficulties. This article presents the experimental results of a research project carried out on the four unreinforced masonry (URM) walls with four different types of lime mortars used in the Roman and Byzantine periods under shear-compression. Besides, an elasto-plastic damage (EPD) approach is adapted calibrating the parameters of Oliver's damage model and the modified von-Mises yield criterion for the masonry constituents. For the modeling purposes, a new fictitious joint material approach is introduced to describe the constitutive behavior of both mortar and mortar-brick interface. The proposed approach can be useful to describe the behavior of mortar and mortar-unit interface in existing masonry structures.
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    Öğe
    Numerical Modeling of Traditional Masonry Walls Strengthened with Grout Injection
    (Taylor & Francis Inc, 2020) Doran, Bilge; Yuzer, Nabi; Aktan, Selen; Oktay, Didem; Ulukaya, Serhan
    The main purpose of this article is to experimentally and numerically study the improvements introduced by the grout injection strengthening technique for the structural rehabilitation of traditional unreinforced masonry (URM) walls. In this context, four damaged URM walls with four different types of lime mortars under shear-compression are strengthened using grout injection method. Injection materials (Grout) which have same contents with existing mortar types are applied to all cracks in damaged walls. Besides, for the numerical simulations, a simplified micro modeling strategy is preferred combining the mortar and the mortar-unit interface behavior and then an elasto-plastic damage (EPD) approach is adopted calibrating the parameters of Oliver's damage model and the modified von-Mises yield criterion for the masonry constituents. Results show that the proposed approach can be useful to describe the behavior of mortar and mortar-unit interface in strengthened masonry structures with grout injection.