Numerical Analysis of Inclined Granular Pile Anchor Subjected to Uplift Forces in Expansive Soil using Abaqus

Kumar, Ankit; Sharma, Ravi Kumar

doi:10.22044/jme.2023.12714.2309

Document Type : Original Research Paper

Authors

Civil Engineering Department, National Institute of Technology Hamirpur, Himachal Pradesh, India

https://doi.org/10.22044/jme.2023.12714.2309

Abstract

Granular pile anchor is a new technique that is commonly used to improve the pull-out resistance of expansive soil like soft clay, loose sand, and black cotton soil. Using the Abaqus software, this work presents a numerical investigation to estimate the pull-out capacity of granular pile anchor in soft clay. By applying a specified displacement of 10% of D (pile diameter) on the granular pile anchor, the effects of length, diameter, angle of inclination (α), and number of GPA at varying spacing values on uplift capacity is examined. Additionally, L/D ratios of both individual and group piles are examined using various variables. The study uses expansive soil and GPA of unit weight 17 kN/m³ and 22 kN/m³, poisson’s ratio of 0.4 and 0.3, modulus of elasticity 4 MPa, and 11 MPa, respectively, for the estimation of uplift capacity. The cohesion value for the expansive clay is 25 kPa, and the angle of shearing resistance for GPA is 36^˚. According to the numerical study, both for a single pile and for piles placed in a group, with increases in pile length and diameter, the granular pile anchor's pull-out capability improves. For a pile placed in group the value of the pull-out capacity shows optimum result when spacing (S) is 2.5D. Additionally, the uplift capacity of the granular pile anchor increases with an increase in angle inclination (α) from 0^˚ to 10^˚, and then decreases from 10^˚ to 15^˚. The efficiency of GPA is examined, which assists in the choice of the different granular pile anchor parameters.

Keywords

20.1001.1.22518592.2023.14.2.4.5

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Journal of Mining and Environment

Numerical Analysis of Inclined Granular Pile Anchor Subjected to Uplift Forces in Expansive Soil using Abaqus

References

References

Volume 14, Issue 2
April 2023
Pages 413-434

Numerical Analysis of Inclined Granular Pile Anchor Subjected to Uplift Forces in Expansive Soil using Abaqus

References

References

Volume 14, Issue 2April 2023Pages 413-434

Volume 14, Issue 2
April 2023
Pages 413-434