3D Numerical Investigation of Soil Arching in Deep Cement Mixing and Stiffened Deep Cement Mixing Pile-Supported Embankments

The study investigated the performance of embankments stabilized with deep cement mixing piles and cement-based pile reinforcement with a concrete core. A three-dimensional numerical analysis was conducted, and the results were validated using site monitoring data. The stiffened piles reduced ground settlement by 30% compared to traditional cement mixing piles, while also limiting lateral displacements. Installing a concrete core improved load transfer efficiency, enhancing overall stability. The numerical analysis demonstrated variations in vertical stress distribution among piles beneath the embankment. Additionally, the study proposed analytical equations using power functions to describe load distribution across piled foundations. These findings provide a deeper understanding of embankment stabilization using cement-reinforced piles and offer valuable insights for future design improvements.