Performance of Stone Column Subjected to Dynamic Loading in Sand Bed

The objective of this paper is to study the effect of dynamic loading on machine foundation and to compare the settlements of machine foundation with different types of stone columns. The Shaking table test is used throughout the study to investigate the effect of dynamic loading on machine foundation on soil bed with respective stone columns, i.e., ordinary stone columns (OSC), encased stone columns (ESC), and reinforced stone columns (RSC) using a series of laboratory-scale model tests. Furthermore, the effect of various parameters such as length and diameter of stone column, amplitude of vibrations on the settlement of machine foundation supported on soil bed are with an OSC, ESC, and RSC are compared. From the result, it is evident that encased stone columns are more effective as compared to ordinary stone column and reinforced stone column, toward reducing the settlement of footing subjected to dynamic loading.