Conclusions
1. Bending moments, which increase in proportion to the settlement and the angle of incline of the piles, develop in inclined piles as the CPF settle under load. The possibility of their determination in accordance with the method outlined in [4] has been substantiated experimentally.
2. Proceeding from conditions of the optimal performance of inclined piles and conditions under which their strength is ensured, it is established that it is expedient to adopt an angle of incline within the range of 5–6° for the piles.
3. A method of calculating the bearing capacity of CPF from static-penetrometer data, proceeding from the hypothesis of the possibility of determining the strength of CPF as the sum of the strengths of its component elements with allowance for strength assurance in the material of the inclined piles, is proposed. The discrepancy between computed and experimental data was 16–32% as a factor of safety.
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A. L. Gotman and R. G. Galeev, "Stress—strain state of a vertically loaded pile foundation," Design Problems of Progressive Structures of Pile Foundations: Proceedings of the Ufa Scientific-Research Institute of Industrial Construction [in Russian], Ufa (1988), pp. 55–65.
A. L. Gotman and Ya. Sh. Ziyazov, "Determination of the bearing capacity of cast-in-place piles in a tamped bed using soil-penetration data," Osn., Fundam. Mekh. Gruntov, No. 2, 12–15 (1984).
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Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, No. 6, pp. 15–18, November–December, 1991.
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Gotman, A.L., Karanaev, M.Z. Performance of vertically loaded combined pile foundations. Soil Mech Found Eng 28, 249–255 (1991). https://doi.org/10.1007/BF02101301
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DOI: https://doi.org/10.1007/BF02101301