Estimation of Modular Ratio and Modulus of Deformation of Granular Piles from in Situ Compression Tests Under Direct Loading

Granular piles have been and continues to be used extensively for improving the ground in terms of increased load carrying capacity, reduced settlements, for rapid dissipation of pore pressures, to mitigate liquefaction effects etc. The effective application of granular piles in soft ground necessitates the knowledge of deformation parameters of the ground and of the granular piles, for determining the behavior of granular piles in different soil conditions. This paper presents a method to estimate the modular ratio of granular piles and modulus of deformation of surrounding in situ soil from the load-settlement response obtained from the compression tests. The direct loading test cases in which the applied load is totally transferred onto the granular pile have been considered in this study.