Identification of residual force in static load tests on instrumented screw displacement piles

Autor: Krasiński Adam, Wiszniewski Mateusz
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Studia Geotechnica et Mechanica, Vol 43, Iss 4, Pp 438-451 (2021)
Druh dokumentu: article
ISSN: 2083-831X
DOI: 10.2478/sgem-2021-0025
Popis: 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 necessary condition for the proper interpretation of instrumented pile test results.
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