Browsing by Author "Hamamcioglu-Turan, M"

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    Investigation of in-plane and out-of-plane wall behavior related to lateral loading depending on wall profiles and opening types in Hellenistic Towers
    Gençer, F; Hamamcioglu-Turan, M; Aktas, E
    Dry masonry wall profiles constructed without using bonding material between blocks are encountered in different building types dated to Greek, Hellenistic and Roman periods. Depending on development of earthquake experiences, dry masonry wall profiles vary in terms of wall thickness, number of layers, relationship of layers and size, form, organization and relationship of blocks. In this study, the construction details increasing the structural strength in watch towers constructed in Hellenistic Period are aimed to be determined. This study is limited with investigation of effect of wall profiles and opening organizations on in-plane and out-of-plane wall behaviors under lateral loading. Primarily, wall profiles and opening types of dry masonry towers in ancient Caria, Pamphylia and Cilicia regions, that have not lost authenticity and integrity or had information about their authentic form, were documented. By using gathered data, hypothetic towers with different wall profiles and opening types are designed. To determine in-plane and out-of-plane wall behavior of hypothetic towers, simulation of quasi-static tilt analysis based on equilibrium were carried out, and form changes at walls and collapse angles of towers were identified. Wall profile and opening properties effecting on structural strength under lateral loading were determinedd.
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    Hellenistic masonry techniques in southern and western Anatolia
    Gençer, F; Hamamcioglu-Turan, M
    Various Hellenistic masonry wall classifications have been given for Egypt, Greece, Persia, Phoenicia, Anatolia, etc., in literature. However, it is hardly possible to classify all masonry types in Anatolia because it varies regionally and has unique qualities. An important subject of research is what causes this diversity. Thus, this study aims to identify the original wall configurations and facings as well as the factors that define these structures by examining the undocumented walls in Anatolia's western and southern regions. Anatolian-specific composite techniques will be deciphered. The masonry techniques used in the walls of Caria, Lycia, and Pam-phylia Regions, which are rich in examples of Hellenistic city walls, in the Western and Southern coasts of Asia Minor are compared in terms of their arrangement of blocks, wall profiles, and finishing of the faces.The first step of the method is a literature survey for determining the distribution of Hellenistic masonry walls in Anatolia. This was followed by a preliminary site survey. The dry-joint masonry walls that have sustained their authenticity and remain that have traces of their original composition were selected for accurate examination. Walls in Latmos, Alinda, Alabanda, Tekekale, Myndos in Caria; Sillyum, Side, and Perge in Pamphylia; and Oenoando and Isium in Lycia were examined. Their construction techniques and material usage were determined with the measured survey, visual analysis, and laboratory analysis. Also, the documented masonry patterns were compared with the masonry arrangements in different geographies of the world.Consequently, this study demonstrates that different masonry arrangements emerged in Anatolia as a result of varieties in the local environment. There are unique composite examples of integrating polygonal and ashlar leaves with headers and squat blocks in Anatolia.
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    Structural vulnerability of ancient dry masonry towers under lateral loading
    Gençer, F; Hamamcioglu-Turan, M; Aktas, E
    Understanding how the original characteristics contribute to the structural behaviour of antique structures should be the initial stage of planning for conservation work. This study aims to identify the structural behaviour of dry masonry towers under lateral loadings, so that the decision-making process when determining their restoration can be adequately supported. Dry masonry towers in ancient Caria, Pamphylia, and Cilicia Regions are examined. Each of these three areas have very different seismic characteristics. A hypothetical testing process was designed by combining different characteristics from each of the towers. As a result, the characteristics affecting the structural resistance were determined as; the staggering ratio, the stone depth, the ratio between block length and height, the proportional relationship between height and length, the area, number and position of openings, and the distribution of header stones. These characteristics all interact together to determine the failure mechanism; so, understanding this interaction is critical when considering conservation.