Perbandingan Gerusan Lokal Yang Terjadi Di Sekitar Abutment Dinding Vertikal Tanpa Sayap Dan Dengan Sayap Pada Saluran Lurus, Tikungan 90°, Dan 180° (Kajian Laboratorium)

Agung Wiyono • Joko Nugroho • Widyaningtias Widyaningtias • Eka Risma Zaidun
Journal article Jurnal Teknik Sipil ITB • 2011

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(Bahasa Indonesia, 14 pages)

Abstract

. The damage phenomenon of the bridge due to scour on pier foundation or abutment is difficult to observe directly. One of the methods to simplify this phenomenon is modeling in the laboratory. The purpose of this research is to compare scouring around vertical wall and vertical wing-wall abutment in straight channel, 90o, and 180o curve channel. Scouring comparison focused on the live-bed scour and the occurrence of sediment transport along the 4, 5, 6, and 7 liters / second discharge on the channel model. Results of physical parameters such as velocity and depth of scouring compared with the analytical using Laursen (1960), Froehlich (1989), and Mellvile (1997) formula. The result from each calculation will be compared with the observation data. The resultshows that maximum scouring for vertical wall and vertical wing-wall abutment occurred in upstream and middle of abutment respectively. Furthermore, sedimentation for both of types is around downstream of abutment. From the analytical comparison, Laursen's Formula gives closer accuracy for vertical wall abutment than others formulas, with the percentage of error is about 20,02%. While, Froehlich's Formula gives 28,17% for wing-wall abutment.

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Jurnal Teknik Sipil ITB

Jurnal Teknik Sipil ITB merupakan jurnal ilmiah yang diterbitkan berkala setiap tiga bulan, yaitu... see more