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The effects of vibrations on the forces of external friction of soils

  • Soil Mechanics
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Soil Mechanics and Foundation Engineering Aims and scope

Conclusions

1. The experiments showed that the actual characteristics of resistance to shearing of a vibrating (in the direction of the action of the shearing force) surface on soil differs greatly from that determined only during the effect of a single loading.

2. In dry sand this resistance most nearly corresponds to the hypothesis of dry friction, during which the coefficients of external friction due to the effect of vibrations appear much less (five times in this experiment) than the static, which, evidently, explains the formation of the effect of roll over of the grain and sand in the boundary layer.

3. In moist sands and water saturated sands and also in soft sandy loams, the form of friction approximates viscous friction during vibrations. At standard pressures from 0.5 to 1 kg/cm2, i.e., near to that observed during pile driving, the coefficient of visous friction appears equal for low-moisture course sands; 0.3 to 0.5 kg · sec/cm; for water saturated sands; 0.2 to 0.5 kg · sec/cm; for soft sandy loams; 1.4 to 1.6 kg · sec/cm.

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Literature cited

  1. D. D. Barkan, Vibromethod of Driving Rabbets, Pipes and Piles in Well Drilling. Materials for the Fourth International Congress on the Mechanics of Soils and Foundation Construction, AN SSSR (1957).

  2. N. A. Preobrazhenskaya, Experimental Data on Driving and Extracting Rabbets and Piles in Sandy Soils. Extraction of Rabbets from Porous Coefferdams of the Gor'kii Hydroelectric Power Plant with Help of Vibration. Works NIIOsnovanii. Collection No. 32 (1958).

  3. Yu. V. Izbash, Friction between Vibration Surface and soil, "Notes of Colleges. Construction and Architecture," No. 8 (1959).

  4. A. S. Golovachev, Dynamics of the Interaction of Soil and a Pile, Driven by the Vibromethod. Investigation of Vibropercussion Driving Construction in Soil. Ts. NIISK, Mintransstroi SSSR (1960).

  5. N. A. Florina, The Resistance to Shearing of Soils During Vibrations. Scientific-Technical Information Bulletin No. 4, M. I. Kalinin Leningrad Polytechnical Institute (1960).

  6. S. A. Asmakov and O. A. Savinov, Forced Vibrations of a System of Two Masses, Interacting by the Force of Dry Friction. News of Colleges, Machine Construction, No. 4 (1963).

  7. L. G. Loitsyanskii and A. I. Lur'e, Theoretical Mechanics, Part 3, ONTI (1934).

  8. I. I. Blackman, Investigation of the Process of Vibroseparation and Vibrotransportation. Engineering Collection, In-ta Mechanics AN SSSR,11 (1952).

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Authors and Affiliations

  1. Leningrad

    E. M. Perlei

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  1. E. M. Perlei
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Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, Vol. 1 No. 3, pp. 5–8, March, 1964

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Perlei, E.M. The effects of vibrations on the forces of external friction of soils. Soil Mech Found Eng 1, 147–152 (1964). https://doi.org/10.1007/BF01703664

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  • DOI: https://doi.org/10.1007/BF01703664

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