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Analysis of the pile skin resistance formation

Paweł Siemaszko

Paweł Siemaszko

West Pomeranian Institute of Technology Szczecin, Faculty of Civil Engineering and ArchitectureSzczecin,
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Siemaszko, Paweł
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Zygmunt Meyer

Zygmunt Meyer

West Pomeranian Institute of Technology Szczecin, Faculty of Civil Engineering and ArchitectureSzczecin,
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Meyer, Zygmunt
  
Nov 01, 2021
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Article Category: Original Study
Published Online: Nov 01, 2021
Page range: 380 - 388
Received: Mar 03, 2021
Accepted: Sep 07, 2021
DOI: https://doi.org/10.2478/sgem-2021-0026
Keywords
© 2021 Paweł Siemaszko et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1

Loaded pile scheme.Symbols on Figure 1: D- pile diameter [m] h- length of the pile in the soil [m] l- arm of bending space [m] N1- load at the base of the pile [MN] N2- load at the head of the pile [MN] N(z)- axial force in the pile at z depth [MN] τ(z)- shear stress on the pile skin at z depth [MPa] s- settlement value of the pile [mm] s(z)- settlement of the pile at z depth [mm]
Loaded pile scheme.Symbols on Figure 1: D- pile diameter [m] h- length of the pile in the soil [m] l- arm of bending space [m] N1- load at the base of the pile [MN] N2- load at the head of the pile [MN] N(z)- axial force in the pile at z depth [MN] τ(z)- shear stress on the pile skin at z depth [MPa] s- settlement value of the pile [mm] s(z)- settlement of the pile at z depth [mm]

Figure 2

Placement of strain gauges for Pile 1, forces graph [9].
Placement of strain gauges for Pile 1, forces graph [9].

Figure 3

Graph of CPTu investigation results for Pile 1 (left graph) and Pile 2 (right graph) [9].
Graph of CPTu investigation results for Pile 1 (left graph) and Pile 2 (right graph) [9].

Figure 4

Comparison of values obtained from measurements (m index) with authors’ calculations (calc index) for Pile 1, different loads.
Comparison of values obtained from measurements (m index) with authors’ calculations (calc index) for Pile 1, different loads.

Figure 5

Comparison of values obtained from measurements (m index) with authors’ calculations (calc index) for Pile 2, different loads.
Comparison of values obtained from measurements (m index) with authors’ calculations (calc index) for Pile 2, different loads.

Figure 6a

Least squares method for Pile 1 N2=6100 kN.
Least squares method for Pile 1 N2=6100 kN.

Figure 6b

Least squares method for Pile 2 N2=2400 kN.
Least squares method for Pile 2 N2=2400 kN.

Figure 7a

Relationship between settlement and shear stress at the head of Pile 1.
Relationship between settlement and shear stress at the head of Pile 1.

Figure 7b

Relationship between settlement and shear stress at the base of Pile 1.
Relationship between settlement and shear stress at the base of Pile 1.

Figure 8a

Relationship between settlement and shear stress at the head of Pile 2.
Relationship between settlement and shear stress at the head of Pile 2.

Figure 8b

Relationship between settlement and shear stress at the base of Pile 2.
Relationship between settlement and shear stress at the base of Pile 2.

Figure 9a

Pile 1 values comparison; linear distribution for B2=5,28.
Pile 1 values comparison; linear distribution for B2=5,28.

Figure 9b

Pile 2 values comparison; linear distribution for B2=6,89.
Pile 2 values comparison; linear distribution for B2=6,89.

Figure 10a

Pile 1 values comparison; linear distribution for B1=0,02.
Pile 1 values comparison; linear distribution for B1=0,02.

Figure 10b

Pile 2 values comparison; linear distribution for B1=0,01.
Pile 2 values comparison; linear distribution for B1=0,01.

Static load test values for Pile 1_

Dimensions N2 [kN] s2 [mm]
Pile nr 1 D=0,8 m 6100 14,05
5800 12,29
5500 10,42
H=18,05 m 5200 9,42
4900 8,28
4600 7,21
4300 6,36
Technology: CFA 4000 5,64
3700 4,75
3400 4,23
3100 3,56
2800 2,83
2400 2,24
2000 1,76
1600 1,27
1200 1,12
800 0,74

Static load test values for Pile_

Dimensions N2 [kN] s2 [mm]
Pile nr 2 D=0,8 m 4800 25,46
4500 18,23
4200 13,28
H=18,05 m 3900 8,85
3600 6,83
3300 5,48
3000 4,42
Technology: CFA 2700 3,6
2400 2,89
2100 2,27
1800 1,69
1500 1,28
1200 0,98
900 0,7
600 0,43
300 0,2
Language:
English
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Journal Subjects:
Geosciences, Geosciences, other, Materials Sciences, Composites, Porous Materials, Physics, Mechanics and Fluid Dynamics
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