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Architecture, Civil Engineering, Environment
Édition 16 (2023): Edition 3 (September 2023)
Accès libre
The Analysis of Pile Skin and Base Resistances Interaction Based on Static Pile Load Test in Experimental Research
Krzysztof Żarkiewicz
Krzysztof Żarkiewicz
| 20 oct. 2023
Architecture, Civil Engineering, Environment
Édition 16 (2023): Edition 3 (September 2023)
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Publié en ligne:
20 oct. 2023
Pages:
141 - 150
Reçu:
23 janv. 2023
Accepté:
29 mars 2023
DOI:
https://doi.org/10.2478/acee-2023-0041
Mots clés
Pile
,
Pile skin friction
,
Pile base resistance
© 2023 Krzysztof Żarkiewicz, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Figure 1.
Pressure mapping system used in measurement stress in soil. a) the sensor with data logger; b) zoom on sensel
Figure 2.
Grain size distribution of the soil used in the research
Figure 3.
Schemes of tests with measurement instrumentation
Figure 4.
Outcomes from static pile load test. Where N2 – axial load applied at pile head, N1 – pile base resistance, T – pile skin resistance, s – pile head settlement. a) Pile 1, b) Pile 2, c) Pile 3, d) Pile 4
Figure 5.
Example of stress measured by the pressure mapping system of Pile 1 at the load N2 = 2.18 kN. a) Pressure map from one step of load; b) Outcomes as the average values over a band of vertical component of stress is soil versus distance from pile skin (r–r0) with proposed approximation
Figure 6.
Stress in soil σv,s,0 versus pile skin and base resistance close to the pile skin at the level of pile base where T=N2-N1. a) Pile 1; b) Pile 2
Figure 7.
Calculated stresses v,s,o versus measurements. a) Pile 1; b) Pile 2
Figure 8.
Example of stress measured by pressure mapping system of Pile 3 as an average over the entire area, at load N2 =1.91 kN, and settlement s=0.97 mm. a) Pressure map from one step of load; b) Outcomes of the vertical component of stress is soil versus distance from pile axis (r) with proposed approximation
Figure 9.
Stress in soil σv,s,0 versus axial force in pile head N2 50 mm beneath the pile base Pile 3 and Pile 4
Figure 10.
Calculated ratio of stresses σv,b,0 / σv,s,0 versus settlement. a) Pile 1; b) Pile 2