Theoretical and Numerical Analysis of Impact Forces on Blocking Piles Within Embankment Breaches Using Flow Velocity...

Area of Science:

• Civil Engineering
• Hydraulic Engineering
• Disaster Management

Background:

• Accurate assessment of impact forces on emergency structures during natural disasters is critical for effective response.
• Structural Health Monitoring (SHM) and smart disaster prevention rely on understanding forces on structures like embankment breach piles.
• Existing methods may not fully capture the complex interplay of hydraulics and structural response.

Purpose of the Study:

• To establish a theoretical method for calculating water flow impact forces on embankment breach piles.
• To validate the proposed theoretical method using numerical simulations and comparative analysis.
• To provide a reference for data-driven emergency plugging decisions in embankment breach scenarios.

Main Methods:

• Combined a numerical model of breach hydraulics with the Morison equation to develop a theoretical calculation method.
• Developed a 3D finite element model to simulate water flow and pile interactions.
• Analyzed the influence of factors like flow velocity and water depth on impact forces.

Main Results:

• The Morison equation method, with specific coefficients (CD=1.0, CM=2.0), can estimate structural impact forces within an acceptable error range.
• The 3D finite element model provided insights into the coupled effects of water flow and pile arrangement.
• Key parameters influencing the force on plugging structures were identified.

Conclusions:

• The proposed theoretical method offers a reliable approach for estimating water flow impact forces on embankment breach piles.
• Findings support data-driven emergency plugging strategies, enhancing smart disaster prevention.
• This research provides essential theoretical references for timely and effective responses to embankment breaches.