A comparative discussion on soil arching evolution in CPS and GRPS embankments
A comparative discussion on soil arching evolution in CPS and GRPS embankments
The behavior and design of piled embankments constructed on soft soils are significantly influenced by soil arching, characterized by the redistribution of stresses between the yielding mass and the surrounding nonyielding soil. On the other hand, lateral spreading action within the embankment acts as an important factor in the load distribution mechanism. Considering the lateral deformations and principal stress directions, this study investigated arching evolution in CPS and GRPS embankments under self-weight using FEM analyses in 2D and 3D. A series of numerical models were employed to examine the impact of geometry parameters such as embankment height and center-to-center pile spacing on arching evolution. The lateral earth pressure coefficients and horizontal deformations inside the fill were observed to understand the arching mechanism and pile efficacy.