A new test setup for studying sand behaviour inside an immersed tunnel joint gap

Conference Paper (2018)
Author(s)

Rheza Rheza Rahadian (Student TU Delft)

Sallo van der Woude (Van Hattum en Blankevoort)

D. Wilschut (Gemeente Rotterdam)

Kees Blom (TU Delft - Concrete Structures)

W. Broere (TU Delft - Geo-engineering)

Geo-engineering
Copyright
© 2018 Rheza Rheza Rahadian, Sallo van der Woude, D. Wilschut, C.B.M. Blom, W. Broere
DOI related publication
https://doi.org/10.1201/9780429438660-63
More Info
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Publication Year
2018
Language
English
Copyright
© 2018 Rheza Rheza Rahadian, Sallo van der Woude, D. Wilschut, C.B.M. Blom, W. Broere
Geo-engineering
Bibliographical Note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.@en
Pages (from-to)
443–448
ISBN (print)
978-1-138-34419-8
ISBN (electronic)
978-0-203-71227-6
Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Abstract

During inspections of several immersed tunnels in the Netherlands, damage of immersion joints has been observed. In some cases the Gina seal has moved inwards from its original location, and in other cases a permanent elongation of the entire tunnel structure has been measured. For both cases it has been hypothesised that a seasonal expansion and contraction of the tunnel elements allows sand to enter the joint gap between elements during winter, where it is compacted during summer, leading to an increasing amount of sand in the joint gap over the years. In order to study this mechanism and assess its impact, a 1:3 scale model joint gap has been designed and constructed. This setup can simulate expansion and contraction cycles of the joint and measure stresses in the joint gap and deformations of the Gina seal. First test results are presented here and show that compaction of the sand entering the joint gap indeed occurs and leads to the observed large inwards
deformations of the Gina seals.

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