Experimental Investigation of Scour Hole Geometry around Circular Bridge Piers

Öz

Failure of the bridges due to local scour around their piers can cause serious life losses and property damages and create significant environmental problems. In this experimental study, scour hole geometry around circular bridge piers were investigated. The experiments were carried out in a rectangular flume 80 cm wide, 18.6 m long and 75 cm high by using uniform sediment with a median diameter of 3.47 mm and geometric standard deviation of 1.39. The experiments were performed under steady state flow conditions, with four different constant discharges.

Anahtar Kelimeler

• Bridge pier,Clear-water scour

Dairesel Köprü Ayakları Etrafındaki Oyulma Çukuru Geometrisinin Deneysel Araştırılması

Öz

Köprü ayakları etrafındaki yerel oyulmalara bağlı oluşan sorunlar, köprülerin zarar görmesine ve buna bağlı ciddi çevresel etkilere sebep olmakta ve hatta can kayıpları yaşanabilmektedir. Sunulan bu deneysel çalışmada dairsel köprü ayakları etrafında oluşan oyulma çukuru geometrisi incelenmiştir. Deneyler, 80 cm genişlikli, 18,6 m uzunluklu ve 75 cm yükseklikli dikdörtgen kesitli bir kanalda, dane medyan çapı 3,47 mm ve geometrik standart sapması 1,39 olan üniform taban malzemesi ile gerçekleştirilmiştir. Dört farklı debi değeri ile kararlı akım şartlarında deneyler tamamlanmıştır.

Anahtar Kelimeler

• Köprü ayağı,Temiz-su oyulması

Kaynakça

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