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Piles in soils prone to slump-type settlement

  • A. A. Grigoryan
From the Editorial Office

Conclusions

  1. 1.

    Pile foundations are one of the basic types of foundations used in construction on soils prone to slump-type settlement.

     
  2. 2.

    The bearing capacity of the beds of pile foundations should be calculated using strength characteristics, and not as a function of consistency.

    The appropriate section of the Construction Rules and Regulations [3] should be reworked.

     
  3. 3.

    Under soil conditions classed as type II in terms of proneness to slump-type settlement, the behavior of the soil stratum during wetting assumes prevalent significance, and the settlements of pile foundations should be predicted as a function of possible deformations of the stratum. This position should also be introduced to the Construction Rules and Regulations [3].

     
  4. 4.

    The question concerning consideration of negative-friction forces should be radically revised in the Construction Rules and Regulations [3], and their influence on the bearing capacity of pile foundations significantly diminished.

     
  5. 5.

    The effect of a rise in the water table as soils are wetted from below under soil conditions classed as type II in terms of proneness to slump-type settlement is of no risk to structures when the piles penetrate through the stratum prone to this type of settlement [9]. The greatest risk lies in prolonged wetting of the bed soils from above.

     

Keywords

Civil Engineer Water Table Great Risk Soil Condition Structural Foundation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    A. A. Grigoryan, “Deformation phenomena in the region of the No. 7 shop of the Nikopol' Southern Pipe Plant,” Osn., Fundam. Mekh. Gruntov, No. 3, 6–10 (1983).Google Scholar
  2. 2.
    A. A. Grigoryan, “Deformation phenomena in collapsible soils,” in: Proceedings of the Twelfth International Conference on Soil Mechanics and Foundation Engineering, Rio de Janeiro (1989), pp. 607–609.Google Scholar
  3. 3.
    Construction Rule and Regulation 2.02.03-85, Pile Foundations [in Russian].Google Scholar
  4. 4.
    Standards and Specifications for the Design and Construction of Buildings and Industrial Structures on Macroporous Soils Prone to Slump-type Settlement (Standard Specification-137-56) [in Russian], Stroiizdat, Moscow (1957).Google Scholar
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  7. 7.
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  8. 8.
    Guideline for the Design of Pile Foundations of Buildings and Structures Constructed on Soils Prone to Slump-type Settlement [in Russian], Stroi-izdat, Moscow (1969).Google Scholar
  9. 9.
    A. A. Grigoryan, “Construction on loess soils,” Osn., Fundam. Mekh. Gruntov, No. 1, 24–27 (1991).Google Scholar
  10. 10.
    A. A. Grigoryan and Yu. A. Chinenkov, “Experience gained with construction on long piles with broadened heels in soils prone to slump-type settlement,” Osn., Fundam. Mekh. Gruntov, No. 4, 2–5 (1990).Google Scholar
  11. 11.
    A. A. Grigoryan, “Bearing capacity of piles in loess soils,” in: Proceedings of the Eighth International Conference on Soil Mechanics and Foundation Engineering, Moscow (1973), pp. 125–129.Google Scholar
  12. 12.
    A. G. Vil'fand, V. A. Il'ichev, F. F. Zekhniev, and V. K. Lekarnin, “Performance of cast-in-place piles with antifriction jackets in soils prone to slump-type settlement,” in: Proceedings of the Fourth International Conference on Problems of Pile Foundation Engineering [in Russian], Part 2, Perm' (1994), pp. 108–110.Google Scholar
  13. 13.
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Copyright information

© Plenum Publishing Corporation 1996

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  • A. A. Grigoryan

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