Utilization of micro-piles for improving the sub-grade under the existing strip foundation: experimental and numerical study

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Abstract

Micro-piles are one of the effective techniques used to increase the bearing capacity and reduce the settlement, particularly in strengthening existing foundations. In the current study; the behavior of a loaded strip footing strengthened by two rows of micro-piles fixed along each side which was investigated experimentally and numerically. The results indicated that; the ultimate bearing capacity enhanced by 260% and the footing settlement decreased by 45%. The micro-piles modified the bearing capacity failure of the strip footing from the general shear failure to the punching shear failure. The experimental results were verified using numerical analysis that helped in understanding the failure mechanism and the deformation behavior of such technique.

Keywords

Bearing capacity Micro-piles Settlement Vertical reinforcement 

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Faculty of EngineeringTanta UniversityTantaEgypt
  2. 2.Faculty of EngineeringKafrelshiekh UniversityKafrelshiekhEgypt

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