EXPERIMENTAL INVESTIGATION OF WIND PRESSURE FIELDS ON BUILDINGS WITH GABLED ROOFS HAVING DIFFERENT PITCH ANGLES

Bu çalışmada, rüzgar tüneli test bölgesine yerleştirilmiş 15°, 30° ve 45° çatı eğimlerine sahip beşik çatılı bina modelleri üzerinde rüzgar basınç dağılımları incelenmiş ve çatı eğiminin basınç dağılımları üzerindeki etkisi belirlenmiştir. 15 m/s'lik serbest akış hızına maruz bina modellerinin yan duvarları ve çatıları üzerinde yüzey basınç ölçümleri gerçekleştirilerek, 0° ile 360° arasındaki rüzgar geliş açılarında 15°'lik aralıklarla ortalama ve pik basınç katsayıları elde edilmiştir. Basınç dağılımları çatı eğiminden önemli oranda etkilenmektedir. 15° eğimli çatı durumunda çatı üzerindeki emme etkileri 30° ve 45° eğimli çatılara göre daha kritik olmaktadır. En kritik emme etkisi, 15° çatı eğimine sahip bina modelinin rüzgar tarafındaki çatı köşesi yakınında 15°'lik rüzgar geliş açısında oluşmaktadır. Model yüzeylerinde eş basınç alanları şeklindeki dağılımlar, emme etkisi açısından 45°'lik rüzgar geliş açısının 0° ve 90°'lik rüzgar geliş açılarına göre daha kritik olduğunu göstermektedir.

FARKLI EĞİM AÇILARINA SAHİP BEŞİK ÇATILI BİNALAR ÜZERİNDE RÜZGAR BASINÇ ALANLARININ DENEYSEL İNCELENMESİ

A wind tunnel study was carried out to investigate wind pressure distributions on the three gables roofed building models of 15°, 30°, and 45° roof pitch and determine the effect of roof pitch on the external wind pressure. The surface pressure measurements were performed on the roofs and side walls of the building models facing a turbulent wind of 15 m/s and the values of mean and peak pressure coefficients were obtained for wind angles from 0° to 360° with 15° increment. The pressure distributions on the roofs are significantly influenced by the roof pitch. The roof pitch of 15° produces more critical suction on the roof than those of 30° and 45° roof pitches. The highest peak suction is experienced with 15° pitched roof at the windward roof corner for the wind angle of 15°. Pressure contour distributions on the building models show that wind angle of 45° is more critical than wind angles of 0° and 90°

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