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Fibre optic instrumentation of vibro concrete columns and surrounding ground for static and dynamic load tests

  • Instrumentation of full displacement pile like elements – at Keller called as vibro concrete columns (VCC) – is practically impossible due to utilisation of heavy deep vibro technique during the production and absence of any steel reinforcement. Thanks to cooperation between Keller and Faculty of Civil Engineering of OTH Regensburg a special procedure for post-instrumentation was developed that allows for the axial strain measurement in VCC during the loading tests. The instrumentation comprises among others optical fibre components. The procedure has been deployed on a test site during static as well as dynamic load tests. There were two different types of instrumentation implemented according to art of the load tests. Further there were robust piezometers installed in the soil in advance next to the VCC that allowed for continuous pore water pressure measurements during the load tests. Purpose of the instrumentation deployed is above all to obtain data for effective design of VCC.

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Metadaten
Author:Maximilian Lerch, Thomas NeidhartGND, Michal Bubenicek
DOI:https://doi.org/10.35123/GEO-EXPO_2020_6
Parent Title (English):Zbornik Radova GEO-EXPO 2020: Proceedings - Scientific and expert conference GEO-EXPO 2020
Publisher:Društvo za geotehniku u Bosni i Hercegovini
Document Type:conference proceeding (article)
Language:English
Year of first Publication:2020
Release Date:2022/04/11
First Page:40
Last Page:49
Institutes:Fakultät Bauingenieurwesen
Fakultät Bauingenieurwesen / Labor für Geotechnik
research focus:Gebäude und Infrastruktur
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG