Conclusions
1. It was found that an intermediate pad of variable rigidity (in the form of earth piles) improves the operation of the soil base and of the foundation itself.
2. When use is made of an intermediate pad of variable rigidity under the center of a foundation, a region of increased compaction of the soil is formed which is less deformable in comparison with the surrounding soil.
3. When a pad is constructed redistribution of the pressure occurs — under the foundation center it increases by 25–40% and under the edges it decreases by 30%. The effect of the pad on the stress conditions of the soil base decreases with depth and is limited to a depth equal to 1.5 b.
4. As a result of use of an intermediate pad in the form of earth piles, the bending moment in the design section of the foundation is reduced, which yields a saving of 25–27%.
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Literature cited
E. A. Sorochan, Foundations of Industrial Buildings [in Russian], Stroiizdat, Moscow (1986).
E. A. Sorochan, V. D. Zotov, M. I. Andryushina, et al. (USSR), Author's Certificate 1550039 USSR, MKI5 E 02 D 27/01. "Foundation for buildings and structures," Otkrytiya, Izobreteniya, No. 10, 107 (1990).
SNiP 2.02.01-83, Bases of Buildings and Structures [in Russian].
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Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, No. 6, pp. 12–14, November–December, 1991.
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Sorochan, E.A., Andryushina, M.I. Strip foundations with intermediate earth-pile pads. Soil Mech Found Eng 28, 244–248 (1991). https://doi.org/10.1007/BF02101300
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DOI: https://doi.org/10.1007/BF02101300