Numerical Analysis of Inclined Granular Pile Anchor Subjected to Uplift Forces in Expansive Soil using Abaqus | ||
| Journal of Mining and Environment | ||
| مقاله 4، دوره 14، شماره 2، تیر 2023، صفحه 413-434 اصل مقاله (5.34 M) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22044/jme.2023.12714.2309 | ||
| نویسندگان | ||
| Ankit Kumar* ؛ Ravi Kumar Sharma | ||
| Civil Engineering Department, National Institute of Technology Hamirpur, Himachal Pradesh, India | ||
| چکیده | ||
| 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. | ||
| کلیدواژهها | ||
| Granular pile anchor؛ Pullout resistance؛ Expansive soil؛ Upward displacement؛ Uplift capacity | ||
| مراجع | ||
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