Table 2 Maximum relative scour depth (\({d}_{s\_max}/h\)) values in front of bridge pier and abutment in the presence of rectangular debris with different thicknesses (\({T}_{d}/h\)) for relative distances of 0.1 and 0.2 between pier and bridge abutment (\({d}_{ap}/B\)).
\({d}_{50}\)(mm) | Q (l/s) | h (m) | \({U}_{c}\) | \({F}_{r}\) | \(\frac{{d}_{s\_\text{max}(P)}}{h}\) | \(\frac{{d}_{s\_\text{max}(A)}}{h}\) | \(\frac{{T}_{d}}{h}\) | \(\frac{{d}_{ap}}{B}\) | Debris shape | Test |
|---|---|---|---|---|---|---|---|---|---|---|
0.83 | 30 | 0.165 | 0.247 | 0.175 | 0.28 | 0.31 | 0.09 | 0.2 | Rec | 1 |
0.83 | 30 | 0.165 | 0.247 | 0.175 | 0.29 | 0.33 | 0.19 | 0.2 | Rec | 3 |
0.83 | 30 | 0.165 | 0.247 | 0.175 | 0.33 | 0.41 | 0.29 | 0.2 | Rec | 4 |
0.83 | 30 | 0.165 | 0.247 | 0.175 | 0.34 | 0.42 | 0.39 | 0.2 | Rec | 5 |
0.83 | 30 | 0.165 | 0.247 | 0.175 | 0.29 | 0.33 | 0.09 | 0.1 | Rec | 6 |
0.83 | 30 | 0.165 | 0.247 | 0.175 | 0.30 | 0.35 | 0.19 | 0.1 | Rec | 7 |
0.83 | 30 | 0.165 | 0.247 | 0.175 | 0.38 | 0.42 | 0.29 | 0.1 | Rec | 8 |
0.83 | 30 | 0.165 | 0.247 | 0.175 | 0.41 | 0.49 | 0.39 | 0.1 | Rec | 9 |
