Field measurements and numerical analysis of vibroflotation of sand

• DOI: 10.1680/jgeot.20.p.195
• Publication Date: 2021-07-05T09:48:07Z
• Authors: Sparsha Nagula; Michael Nguyen; Jürgen Grabe; Jens Kardel; Thorsten Bahl
• Keywords: Penetration test

Vibroflotation is an established ground improvement technique for granular materials. It densifies loose sands by means of shear and compressive deformation processes imparted the horizontal vibrations a vibrator probe at required soil depth. The field experience empirical relations used design vibroflotation prompt further study analysis. Numerical simulations method help provide insight into process. A coupled Eulerian–Lagrangian framework was to model compaction process modelled based on pilgrim step depth range from 25 m 10 m. hypoplastic constitutive characterise stress–strain behaviour fine sand. results were validated against in-field cone penetration test measurements made before after sand in east Germany. validation followed parametric which following evaluated terms their effects extent degree compaction: frequency, relative density, shape vibrator, spacing points, nature type