Table 2 Maximum change in sand layer thickness
From: Rationality in pier geometry of Kintaikyo Bridge from viewpoint of river engineering
Pier geometry | Maximum scour (mm) | Maximum sedimentation (mm) | ||
|---|---|---|---|---|
Each expt | Mean (95% CI) | Each expt | Mean (95% CI) | |
Without pier (flat) | − 12.4 | − 4.7 (23.71) | 18.0 | 6.8 (18.96, 20.65) |
− 10.0 | 7.6 | |||
− 15.6 | 7.6 | |||
Spindle | − 38.0 | − 39.1 (3.04) | 10.0 | 8.7 (5.74) |
− 38.8 | 10.0 | |||
− 40.4 | 10.0 | |||
Spindle tilted by 12.75° | − 40.4 | − 40.7 (3.04) | 13.2 | 7.9 (11.64) |
− 40.4 | 11.6 | |||
− 42.0 | 14.0 | |||
Current | − 42.0 | − 41.7 (1.15) | 13.2 | 10.8 (1.19) |
− 41.2 | 11.6 | |||
− 42.0 | 10.0 | |||
Oval | − 37.2 | − 40.4 (7.95) | 18.0 | 11.1 (15.44) |
− 42.0 | 10.8 | |||
− 43.6 | 13.2 | |||
Non-regular hexagon | − 38.8 | − 39.3 (2.29) | 10.0 | 10.0 (1.99) |
− 40.4 | 10.8 | |||
− 41.2 | 10.8 | |||