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Abstract
Occurrence of the so-called residual force of an unknown value significantly disturbs interpretation of static load tests performed on piles equipped with additional measuring instruments. Screw displacement piles are the piling technology in which the residual force phenomenon is very common. Its formation mechanism is closely related to the installation method of this type of piles, which initiates generation of negative pile skin friction without any additional external factors. Knowledge of the value and distribution of a residual force (trapped in a pile shaft before starting the load test) is a condition necessary for the proper interpretation of instrumented pile test results. In this article, a clear and easy-to-use method of residual force identification, based on the analysis of shaft deformations recorded during pile unloading is presented. The method was successfully verified on two pile examples and proved to be effective and practical.
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- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.2478/sgem-2021-0025
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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Studia Geotechnica et Mechanica
no. 43,
pages 438 - 451,
ISSN: 0137-6365 - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Krasiński A., Wiszniewski M.: Identification of residual force in static load tests on instrumented screw displacement piles// Studia Geotechnica et Mechanica -Vol. 43,iss. 4 (2021), s.438-451
- DOI:
- Digital Object Identifier (open in new tab) 10.2478/sgem-2021-0025
- Verified by:
- Gdańsk University of Technology
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