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Visualization of Flow Field Around a Vibrating Pipeline Within an Equilibrium Scour Hole
Published on: August 26, 2019
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Stability analysis of roadbed under flood scouring
Rui Wang1,2, Hongmei Tang3, Fuchuan Zhou4,5
1Chongqing Jiaotong University, 66 Xuefu Road, Nan'an District, Chongqing, 400074, People's Republic of China.
Scientific Reports
|February 21, 2024
Summary
River soil roadbeds are vulnerable to flood erosion and collapse, jeopardizing pavement stability. This study reveals damage mechanisms and analyzes factors affecting roadbed integrity under flood conditions.
Area of Science:
- Civil Engineering
- Geotechnical Engineering
- Hydraulic Engineering
Background:
- Soil roadbeds adjacent to rivers face significant risks from flood scouring, leading to bottom erosion and top collapse.
- This instability can cause suspension of the upper pavement slab, compromising road safety and functionality.
Purpose of the Study:
- To investigate the development mechanism of soil roadbed damage caused by floods.
- To propose the evolution process of roadbed instability under scouring conditions.
- To analyze the stability of riverine soil roadbeds during floods and assess influencing factors.
Main Methods:
- Analysis of stability laws and correction of stability safety factors under flood scouring.
- Sensitivity analysis of water depth, flow rate, river bending angle, and stability safety factor (K).
- Numerical simulations to visualize displacement and maximum shear stress under various loading and water depth conditions.
Main Results:
- Identified the evolution process of soil roadbed instability under flood scouring.
- Determined the sensitivity of roadbed width and height to water depth, flow velocity, and river bending angle.
- Numerical simulations provided detailed insights into stress and displacement patterns within the roadbed.
Conclusions:
- The study verified the water damage mechanism of soil roadbeds along rivers through theoretical analysis and comparison with engineering cases.
- Understanding these mechanisms is crucial for ensuring the safety and longevity of riverine infrastructure.
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