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The response of flexible pipes buried in sand to static surface stress
journal contribution
posted on 2017-04-28, 11:49 authored by David N. Chapman, Paul FlemingPaul Fleming, C.D.F. Rogers, Robert TalbyA series of laboratory tests on thin-walled PVC-U (i.e. very flexible) pipes buried in sand is described. The tests were conducted in a glass-fronted test
tank, the pipe being positioned up against the glass with its longitudinal axis perpendicular to the glass. This allowed direct observation of the sand--
pipe interactions. Photographs were taken through the glass allowing discrete measurement of pipe and soil displacements during pipe installation and
subsequent surface loading. This paper discusses the influences on pipe response of installation method, cover depth and pipe stiffness as increasing
static surface stress was applied. The results of the laboratory tests indicate very clearly the importance of well-controlled backfilling around flexible
buried pipes to ensure their long-term performance. The stiffness of the pipe affects the way it behaves and hence its performance in resisting applied
stresses. This is demonstrated by the observed changes in arching effects above pipes of different stiffness. The effect of increasing cover depth is
demonstrated and confirms previous research findings regarding the influence of the ground surface on pipe performance. The results clearly
demonstrate the valuable insight afforded by direct observation of the soil--pipe interaction during installation and the subsequent loading of flexible
pipes.
History
School
- Architecture, Building and Civil Engineering
Published in
Geomechanics and Geoengineering: An International JournalVolume
2Issue
1Pages
17 - 28Citation
CHAPMAN, D.N. ... et al, 2007. The response of flexible pipes buried in sand to static surface stress. Geomechanics and Geoengineering, 2 (1), pp.17-28Publisher
© Taylor & FrancisVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2007Notes
This paper is closed access.ISSN
1748-6025eISSN
1748-6033Publisher version
Language
- en