Dynamic Behaviors of Piled Embankment Under High-Speed Train Loads

The chapter delves into the dynamic behaviors of piled embankments subjected to high-speed train loads, leveraging a sophisticated three-dimensional finite element model. The model simulates the interaction between the train, track, and embankment, highlighting the critical role of the soil arch effect in redistributing dynamic stress. The research reveals that piles bear the majority of the dynamic load, significantly reducing post-construction settlement. The study also introduces a combined Boussinesq solution to describe the stress distribution, showing that geogrid reinforcement enhances stress transfer and limits settlement. Additionally, the impact of different track structures on dynamic stress distribution is examined, demonstrating that track type influences stress patterns at varying depths. The chapter offers valuable insights into optimizing piled embankment design for high-speed railway constructions.