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Related Experiment Video

Updated: May 29, 2025

Visualization of Flow Field Around a Vibrating Pipeline Within an Equilibrium Scour Hole

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Published on: August 26, 2019

Study on scour simulation and boundary condition conversion technology for a shallow foundation bridge.

Gangping Fan¹, Huanzhe Li¹, Tianzhuo Wang¹

¹School of Civil Engineering, Heilongjiang University, Harbin, 150080, China.

Scientific Reports

|February 7, 2025

Summary

Shallow foundation bridges risk collapse from flood scouring. This study reveals extreme conditions create scour pits, leading to voids and potential failure, offering new simulation methods for safety analysis.

Keywords:

Coupling modeling Foundation void River bed erosion Shallow buried foundation bridge

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Published on: April 13, 2016

Area of Science:

Civil Engineering
Geotechnical Engineering
Hydraulic Engineering

Background:

Shallow foundations in bridges are vulnerable to flood scouring due to limited depth and soil contact.
Scouring can cause foundation voids, significantly threatening bridge structural integrity and safety.

Purpose of the Study:

To investigate riverbed scouring characteristics of shallow foundation bridges under various hydrological conditions.
To develop a novel method for simulating complex scouring forms and their impact on bridge structures.

Main Methods:

Utilized Computational Fluid Dynamics (CFD) to model hydraulic effects and scour.
Employed point cloud reverse engineering to generate riverbed surfaces from 3D coordinate data.
Implemented fluid-structure interaction (FSI) technology for multi-physical field coupling (water, soil, structure).

Main Results:

High water levels and flow velocities significantly increase scour depth.
Extreme conditions induce horseshoe vortices, forming scour pits and leading to foundation voids.
Observed initial voids at 2580s, reaching a maximum depth of -2.51m and 0.5% void area, with continued increase.

Conclusions:

The proposed method effectively converts scouring model boundary conditions to a mechanical model for structural analysis.
This approach overcomes limitations in simulating complex scouring phenomena in bridge flood damage research.
Provides a reliable technical foundation for future studies on shallow foundation bridge vulnerability under flood scouring.