Abstract:
Granular Piles are one of the leading ground improvement techniques, adopted for the betterment of bearing capacity and reduction in settlements of the foundations, and also to accelerate consolidation of the surrounding soil. In the recent past, there has been extensive research on the settlement analysis and behavior of Granular Piles under varied soil conditions. The application of these theoretical solutions to practical problems requires knowledge of representative values of the deformation parameters of the ground and the Granular Piles. However, very little information is available on these parameters.
The paper presents a new method for the estimation of the modular ratio of Granular Piles and modulus of deformation of the surrounding in situ soil from the compression load tests. The load-settlement response obtained from the compression test results are used in the back analysis for estimating the modulus of deformation of the soil using the settlement influence factor, axial load applied and length to diameter ratio of the pile. In some cases, the presence of granular bed, under the rigid plate for load testing, has been given due consideration in quantifying the proportion of load transferred on to the Granular Pile. Based on these considerations, load-settlement responses of in situ tests have been analyzed, a new method developed to estimate the modulus of deformation of the ground and the modular ratio of the Granular Pile.
Abstract: Theme 6