Temporal scour development at bridge abutments with a collar

Kumcu S. Y., Goegues M., Koekpinar M. A.

CANADIAN JOURNAL OF CIVIL ENGINEERING, cilt.34, sa.4, ss.549-556, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 34 Sayı: 4
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1139/l06-146
  • Dergi Adı: CANADIAN JOURNAL OF CIVIL ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.549-556
  • Anahtar Kelimeler: bridge abutment, collar, experimentation, hydraulics, scour, temporal variation, LOCAL SCOUR, TIME
  • Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

This study investigated the reduction of scour around a vertical-wall bridge abutment using rectangular collars for clear-water flow conditions over uniform sediment particles in a laboratory flume. Collars of different sizes and at different elevations were tested to determine the temporal variation of scour depth around the bridge abutment. The development of scour around the abutments with and without a collar for a time period of 6 h was studied, and observed scour depths were compared. Experimental results showed that, in addition to protecting the abutments against erosion, the addition of a collar is effective in reducing the rate of temporal scour development. A comparison of the present results with those from previous studies revealed that the effectiveness of a collar increases with a decrease in the elevation of the collar and an increase in the width of the collar.