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YÜKSEK BİNALARIN FORMUNDA RÜZGAR ETKİSİNE KARŞI YAPILAN AERODİNAMİK İYİLEŞTİRMELERİN ROLÜ

THE ROLE OF AERODYNAMIC MODIFICATIONS IN THE FORM OF TALL BUILDINGS AGAINST WIND EXCITATION

Journal Name:

  • Orta Doğu Teknik Üniversitesi Mimarlık Fakültesi Dergisi

Publication Year:

  • 2008

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Keywords (Original Language):

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Abstract (2. Language): 
Modern tall buildings go higher and higher with the advances in structural design and high strength materials. However, every advance in height comes with a new difficulty. Efficient structural systems, high strength materials, and increased height, result with decrease in building weight and damping, and increase in slenderness. On the other hand, as the height and slenderness increase, buildings suffer from increased flexibility, which has negative effects in wind loading. Flexible structures are affected by vibration under the action of wind which cause building motion, and plays an important role in the structural and architectural designs. Understandably, contemporary tall buildings are much more vulnerable to wind excitation than their predecessors. Hence, different design methods and modifications are possible in order to ensure the functional performance of flexible structures and control the wind induced motion of tall buildings. An extremely important and effective design approach among these methods is aerodynamic modifications in architecture. In this context, the authors classify these aerodynamic modifications in architecture for resisting the lateral loads. Wind safe tall building design begins with the architect, and the influence of the wind action must be taken into consideration from the very beginning of the architectural design process by considering building aerodynamics.
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Abstract (Original Language): 
Modern yüksek binalar, yapı tasarımı ve yüksek mukavemetli malzeme alanlarındaki gelişmelerle daha da yukarıları zorlamaktadır. Diğer taraftan, yükseğe çıkıldıkça beraberinde getirdiği bazı zorlukların da aşılması gerekmektedir. Yapı sistemlerindeki yenilikler, yüksek mukavemetli malzemeler ve artan yükseklik sonucu, yapı ağırlığı ve salınım sönümü azalır ve yapı narinliği artar. Yapı yüksekliği ve narinliğinin artmasıyla artan yapı esnekliği, binalardaki rüzgar yükünü olumsuz yönde etkiler. Esnek yapılar, rüzgarın yarattığı titreşimden, salınım yoluyla etkilenir ve bu husus yapı ve mimarı tasarımda önemli rol oynar. Anlaşılacağı üzere, günümüz yüksek yapıları, öncüllerine göre rüzgar etkilerine daha hassastırlar. Bundan dolayı, esnek yapıların rüzgar etkilerinden dolayı salınımlarını kontrol altına almak için çesitli tasarım metodları ve iyileştirmeleri gündemdedir ve mümkündür. Mimarideki aerodinamik iyileştirmeler bu metodların arasında yer almaktadır. Buradan anlaşılacağı üzere, rüzgar güvenli bina tasarımı mimardan başlar ve rüzgar etkisini azaltmak için bina aerodinamiğini dikkate alarak yapılacak olan mimari tasarım gerek yapısal, gerekse bina kullanıcıları açısından önemli bir rol oynar. Bu bağlamda yazarlar, rüzgar yüklerine karşı mimaride uygulanabilecek aerodinamik iyileştirmeleri tartışmış ve sınıflama yoluna gitmiştir.
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