A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Physical scale modelling of scour around bridge piers
The feasibility of physical modelling techniques for quantification of prototype bridge pier scour in reduced scale models is investigated through 17 ad hoc designed experiments which were conducted in three flumes with different widths and depths, using three sediments, and two other materials of different size and density. Experiments covered clear-water and live-bed conditions as well as steady state conditions and real hydrographs of limited duration. Results show that the scour process at a bridge pier is controlled by the dimensionless effective flow work, and the dimensionless grain diameter. The time scale depends on the pier diameter, sediment relative density, sediment size, and flow velocity. In very specific cases, perfect similitude between model and prototype is achieved. In common situations however, the relative size of the pier to sediment in the prototype and the model is distorted, introducing scale effects in the model scour, which are shown to be small.
Physical scale modelling of scour around bridge piers
The feasibility of physical modelling techniques for quantification of prototype bridge pier scour in reduced scale models is investigated through 17 ad hoc designed experiments which were conducted in three flumes with different widths and depths, using three sediments, and two other materials of different size and density. Experiments covered clear-water and live-bed conditions as well as steady state conditions and real hydrographs of limited duration. Results show that the scour process at a bridge pier is controlled by the dimensionless effective flow work, and the dimensionless grain diameter. The time scale depends on the pier diameter, sediment relative density, sediment size, and flow velocity. In very specific cases, perfect similitude between model and prototype is achieved. In common situations however, the relative size of the pier to sediment in the prototype and the model is distorted, introducing scale effects in the model scour, which are shown to be small.
Physical scale modelling of scour around bridge piers
Link, Oscar (author) / Henríquez, Sebastian (author) / Ettmer, Bernd (author)
Journal of Hydraulic Research ; 57 ; 227-237
2019-03-04
11 pages
Article (Journal)
Electronic Resource
English
Mathematical Modelling for Scour Around Bridge Piers
| British Library Conference Proceedings | 1999
Local Scour Around Bridge Piers
| ASCE | 2021
Discussion of “Local Scour Around Bridge Piers”
| ASCE | 2021
Discussion of “Local Scour Around Bridge Piers”
| ASCE | 2021