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Vibro piles performance prediction using result of CPT Cover

Vibro piles performance prediction using result of CPT

Studia Geotechnica et Mechanica
Volume 43 (2021): Issue 4 (December 2021)
By: Paweł Więcławski  
Open Access
|Nov 2021

Figures & Tables

Figure 1

Theoretical model of pile and soil interaction: a) perfectly elastic; b) linear elastic and plastic; c) non-linear elastic; d) non-linear elastic with plastic yielding.
Theoretical model of pile and soil interaction: a) perfectly elastic; b) linear elastic and plastic; c) non-linear elastic; d) non-linear elastic with plastic yielding.

Figure 2

Theoretical model of load–settlement curve.
Theoretical model of load–settlement curve.

Figure 3

Template of averaging resistance from CPT probing.
Template of averaging resistance from CPT probing.

Figure 4

Dependence of ground susceptibility on parameters of the soil and pile geometry.
Dependence of ground susceptibility on parameters of the soil and pile geometry.

Figure 5

Dependence of the initial point of the exponential function s’ on ground susceptibility.
Dependence of the initial point of the exponential function s’ on ground susceptibility.

Figure 6

Relationship between the directional coefficients of the linear function s’’ and the non-linear function s’.
Relationship between the directional coefficients of the linear function s’’ and the non-linear function s’.

Figure 7

Results of probing and averaged parameters from CPT testing.
Results of probing and averaged parameters from CPT testing.

Figure 8

Stages of Q–s characteristics prediction based on the proposed procedure: (a) linear elastic stage; (b) non-linear elastic stage; (c) combination of the linear elastic stage for Q□<0, Qs> and non-linear elastic stage; (d) comparison of the theoretical curve with the measured curve from static load test.
Stages of Q–s characteristics prediction based on the proposed procedure: (a) linear elastic stage; (b) non-linear elastic stage; (c) combination of the linear elastic stage for Q□<0, Qs> and non-linear elastic stage; (d) comparison of the theoretical curve with the measured curve from static load test.

Figure 9

Diagrams of resistance qc for example piles (Gdańsk: CPT-1 to CPT-3, Szczecin: CPT-4 to CPT-6, Grudziądz: CPT-7 to CPT-9).
Diagrams of resistance qc for example piles (Gdańsk: CPT-1 to CPT-3, Szczecin: CPT-4 to CPT-6, Grudziądz: CPT-7 to CPT-9).

Figure 10

Comparison of theoretical curves with actual curves from static pile load tests.
Comparison of theoretical curves with actual curves from static pile load tests.

Figure 11

Concept for generation of safe design curve.
Concept for generation of safe design curve.

Figure 12

Comparison of design curves and curves from SPLT.
Comparison of design curves and curves from SPLT.

Figure 13

Values of calculated limit of load-bearing capacity.
Values of calculated limit of load-bearing capacity.

Figure 14

Comparison of design load-bearing capacity from diverse design methods.
Comparison of design load-bearing capacity from diverse design methods.

Figure 15

Summary of ultimate bearing capacity values from diverse design methods.
Summary of ultimate bearing capacity values from diverse design methods.

Compilation of data used for correlation analysis_

LocationNumber of pilesGeometry of pilesNumber of CPTsDistance between pile and CPTSoil under pile base
DDb*L
(mm)(mm)(m) (m)
Gdańsk54064609.0 to 13.562.0 to 10.0FSa
950856016.0 to 22.072.0 to 10.0FSa
Gdynia1456061014.0 to 18.0102.0 to 6.0FSa
Grudziądz1650856010.6 to 20.0121.0 to 8.0FSa, MSa
Hajnówek45085607,544.0 to 6.0CSa, FSa
Olsztynek446106606.5 to 12.0301.0 to 6.0MSa
Szczecin1340846012.0 to 14.062.0 to 10.0MSa, FSa
645751017.6 to 18.461.0 to 8.0FSa
1045752017.5 to 21.591.0 to 6.0FSa
Wrocław46106608.5 to 11.042.0 to 6.0CSa, MSa
125085606.0 to 18.082.0 to 6.0CSa, MSa
S137 102

Output parameters according to correlations from Fig_ 4 to Fig_ 6_

s”/Qsmm/kNs’mms”mmQskN
0.00421.734.71107
DOI: https://doi.org/10.2478/sgem-2021-0024 | Journal eISSN: 2083-831X | Journal ISSN: 0137-6365
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Language: English
Page range: 452 - 464
Submitted on: Oct 4, 2019
Accepted on: Sep 11, 2021
Published on: Nov 22, 2021
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
Vibro Piles,
Ultimate Capacity,
Settlement Curve,
CPT Probe
Related subjects:
Geosciences,
Geosciences, other,
Materials sciences,
Composites,
Porous materials,
Physics,
Mechanics and fluid dynamics

© 2021 Paweł Więcławski, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution 4.0 License.

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