Investigation of Soil Heaving and Penetration Resistance of Bucket Foundation with Inner Bucket and Cruciform Skirts

Since concrete is cheaper and more resistant to corrosion than steel, the wide-shallow bucket foundation being used extensively in ocean engineering. By adding inner cruciform skirts, both bearing capacity rigidity of increase significantly. When compared hollow steel foundation, inclusion thicker as well addition would cause changes soil flow mechanism, resulting heave within each compartment strength evolution penetration resistance during installation clay. In order study influence skirts on heaving inside compartment, softening resistance, three-dimensional large deformation finite element (LDFE) models for with without bucket, considering remolding were established using Coupled Eulerian–Lagrangian (CEL) approach. It was found that significantly foundation. According theoretical analysis numerical results, diameter optimal equal 5/8 outer diameter. The adhesion coefficient observed this falls range 0.5 0.8, which higher value 0.25 assumes fully remolded. reason discrepancy only partially remolded actual neglect or completely softened will result significant variation predicted resistance; hence, partial should be taken into account.