The growing need for land in metropolitan cities is constantly encouraging Engineers all across the world to land reclamation due to the shortage of land available and the extremely high cost of land. Although granular piles are frequently used for the stabilization of soft soil in coastal and reclaimed areas. The main objective of the present study is to characterize and evaluate the influence of diameter, spacing and depth of a group of granular piles on the load-carrying capacity of soft soils. The piles in a 2-dimensional setup model for the assumed isolated footing of size 1.8 m × 1.8 m resting over the group of granular piles. The study has been carried out on saturated soft cohesive non-swelling soil at a certain consistency. It is attempted the possibility of curtailing the length of the granular pile to a certain depth. Studied its significant effect on load-carrying capacity of the pile and optimum space between the group of granular piles. The load-carrying capacity of soil increases with an increase in the diameter of the granular pile, where no noteworthy effect of depth of stone pile on the carrying capacity of improved soil. The bulging effect of the pile is also studied and it is observed that bulging is significantly continuing only up to the depth of 4 to 6 times the diameter of the pile in all the diameters and spacing. The maximum bulging in the stone pile is about 1.5 to 1.6 times the pile diameter.

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Effect of Diameter and Spacing of Uncemented Granular Pile on Load Settlement Characteristics of Saturated Soft Soil

  • Vaishali J. Rajurkar,
  • K. A. Pandian

摘要

The growing need for land in metropolitan cities is constantly encouraging Engineers all across the world to land reclamation due to the shortage of land available and the extremely high cost of land. Although granular piles are frequently used for the stabilization of soft soil in coastal and reclaimed areas. The main objective of the present study is to characterize and evaluate the influence of diameter, spacing and depth of a group of granular piles on the load-carrying capacity of soft soils. The piles in a 2-dimensional setup model for the assumed isolated footing of size 1.8 m × 1.8 m resting over the group of granular piles. The study has been carried out on saturated soft cohesive non-swelling soil at a certain consistency. It is attempted the possibility of curtailing the length of the granular pile to a certain depth. Studied its significant effect on load-carrying capacity of the pile and optimum space between the group of granular piles. The load-carrying capacity of soil increases with an increase in the diameter of the granular pile, where no noteworthy effect of depth of stone pile on the carrying capacity of improved soil. The bulging effect of the pile is also studied and it is observed that bulging is significantly continuing only up to the depth of 4 to 6 times the diameter of the pile in all the diameters and spacing. The maximum bulging in the stone pile is about 1.5 to 1.6 times the pile diameter.