Numerical study of local scour and hydrodynamic pressure of complex bridge piers
Year: 2024
Type: article
Abstract: This study uses Computational Fluid Dynamics to investigate bridge foundations' scouring process and hydrodynamic pressure caused by an extreme flood. A Large Eddy Simulation model, compiled with a Navier-Stokes equations model, is used to compute the fluid motion with the Volume-of-Fluid to track the motion of the water surface. A Discontinuous Bi-viscosity rheological model describes the river's muddy bottom properties. The numerical results are further analyzed to understand the influence of exposed, closely spaced piles bridge on the scouring process. The results show that the maximum scour depth is deeper when the bridge pier is larger, which includes more closely spaced piles. The predicted maximum scour depth agrees with the field observation. In addition, the velocity and hydrodynamic pressure at each pile are calculated, comparable with that in the bridge design code. This finding is important for the design of bridge foundations with exposed piles.
Source: Results in Engineering
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,490
Award: G5550816345
OpenAlex ID: W4404665722