Conclusions
1. The tests that we conducted demonstrated the technical feasibility of the static penetration of plastically frozen soils with temperatures of 0 to −0.4°C by series-produced type SP-59 and SP-72 apparatus.
2. According to penetration data, computation of the bearing capacity of piles in plastically frozen soils using the method proposed by Ladanyi indicate good convergence with data derived from the field testing of piles.
3. Penetration makes it possible to determine the bearing capacity of piles in plastically frozen soils with a temperature above −0.3°C on which there are no data for the computation in SNiP II-18-76, and the increase their bearing capacity by 25–30% as compared with the SNiP for soils with temperatures of −0.3 to 0.4°C.
4. Further research on the development of a technology and methodology for static penetration of plastically frozen soils of different lithologic composition and temperature, and also a more precise definition of a number of parameters ϕ, n, and m, which are used in computations of pile bearing capacity, are necessary.
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Literature cited
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Additional information
State Institute for the Design and Planning of Beds and Foundations. Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, No. 2, pp. 18–20, March–April, 1986.
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Trofimenkov, Y.G., Minkin, M.A. & Gvozdik, V.I. Determination of the bearing capacity of piles in permafrost by static penetration. Soil Mech Found Eng 23, 58–63 (1986). https://doi.org/10.1007/BF01880311
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DOI: https://doi.org/10.1007/BF01880311