Numerical Modeling by Finite Elements for a Pile Foundation Under Tension Load

Huchegowda, B. K. and Bagoor, Chethan and Kalyan Kumar, G. (2022) Numerical Modeling by Finite Elements for a Pile Foundation Under Tension Load. In: 7th Indian Young Geotechnical Engineers Conference, 7IYGEC 2019, 15 March 2019 through 16 March 2019, Silchar.

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Abstract

The pull out test is a rare test conducted on pile foundation. It is generally conducted to evaluate the resistance of a pile against the various uplift forces generated. Some of the major uplift forces generated are due to seismic activity, wind loads, and unstable sand conditions such as quick sand condition. The geotechnical investigations are conducted for the proposed 60 MW solar PV plant at Tamil Nadu. Field tests were carried out to determine uplift capacity of concrete piles of 0.3 and 0.35 m diameters of L/D ratio 4–5. Totally, eight number of piles were tested in the field. In the preset study, an attempt has been made to determine pull out capacity of piles by numerical modeling using PLAXIS 2D software. A comparative study on uplift capacity of piles has been carried out with the field data. The results obtained from the study indicated that the pile surface characteristics, pile–soil friction angle, and earth pressure coefficient are all significant variables affecting the ultimate uplift capacity of a pile foundation. Further, it is found from the study that there is a close agreement of uplift resistance of piles obtained from the numerical studies with respect to field results. © 2022, Springer Nature Singapore Pte Ltd.

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