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Estimation of Screw Displacement Pile-Bearing Capacity Based on Drilling Resistances Cover

Estimation of Screw Displacement Pile-Bearing Capacity Based on Drilling Resistances

Studia Geotechnica et Mechanica
Volume 45 (2023): Issue s1 (December 2023)
By: Adam Krasiński  
Open Access
|Sep 2023
Figures & tables

Figures & Tables

Figure 1:

Correlations between summed drilling effort SumIE and ultimate bearing capacity of pile shaft (a) and of total pile (b), obtained by NeSmith (2003).

Figure 2:

Selected graphs from the performance record of an example screw displacement pile.

Figure 3:

Scheme of prototype DPDT drill auger according to Patent No. PL 235442 B1, [24].

Figure 4:

Displacement augers tested in the research project: a) DPDT b) DPDT-S, c) SDP

Figure 5:

Auger and its simplified schematic representation (right) in the form of a cylinder (Krasiński, 2014).

Figure 6:

Diagrams of screwing parameters MT and nR as well as calculation of WT;s and WT;b, for example, pile No. 600.

Figure 7:

Example result of instrumented pile load test with specified limit load capacities of shaft Qs;ult and base Qb;ult (b) together with soil profile and cone resistance diagram (a).

Figure 8:

Relationships between representative auger screwing resistances and normalized limit resistances of piles, obtained from the tests, approximated by trend lines: a) for pile shaft, b) for pile base.

Figure 9:

Derived relationships between pile load limit resistances Qs;ult (a) and Qb;ult (b) and representative screwing resistances WT;s (a) and WT;b (b) separately for SDP and DPDT drill augers.

Figure 10:

Q-s characteristics of the SDP pile No. 600, estimated on the basis of the auger screwing resistance compared with result of the real test.
DOI: https://doi.org/10.2478/sgem-2023-0014 | Journal eISSN: 2083-831X | Journal ISSN: 0137-6365
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Language: English
Page range: 282 - 292
Submitted on: Jan 15, 2023
Accepted on: Jun 23, 2023
Published on: Sep 30, 2023
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
screw displacement pile,
pile load capacity,
pile auger,
soil resistance during pile formation
Related subjects:
Geosciences,
Geosciences, other,
Materials sciences,
Composites,
Porous materials,
Physics,
Mechanics and fluid dynamics

© 2023 Adam Krasiński, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 45 (2023): Issue s1 (December 2023)
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