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AuthorAmarasinghe, Ruslan S.
AuthorWijewickreme, Dharma
AuthorEid, Hisham T.
Available date2021-09-05T05:40:11Z
Publication Date2016
Publication NameProceedings of the Biennial International Pipeline Conference, IPC
ResourceScopus
URIhttp://dx.doi.org/10.1115/IPC2016-64100
URIhttp://hdl.handle.net/10576/22669
AbstractExperimental work is undertaken at the University of British Columbia (UBC) to study the soil-pipe interface shear strength at levels of shear displacements and effective normal stresses typically encountered in offshore soil-pipe interaction problems. A macro-scale interface direct shear apparatus having a test specimen footprint of 1.72 m 1.75 m was designed and built for this purpose. The apparatus is capable of testing various soil-pipe interfaces under effective normal stresses in the range of 3 kPa to 6 kPa. A maximum shear displacement of 1.2 m is achievable at rates ranging from 0.1 mm/s to 1 mm/s. Sensors mounted at the interface enable the accurate determination of the effective normal stress at the interface when fully saturated fine-grained soils are tested. This paper presents some observations arising from a series of interface direct shear tests involving fine-grained soils of different plasticity against bare and epoxy coated steel surfaces. Copyright 2016 by ASME.
SponsorIt is with deep appreciation the authors wish to acknowledge the funding provided by the Qatar National Research Fund (QNRF), Qatar, through the Grant No. NPRP082032064 for this research work.
Languageen
PublisherAmerican Society of Mechanical Engineers (ASME)
SubjectPipelines
Project management
Soil testing
Soils
Direct shear apparatus
Direct shear test
Effective normal stress
Epoxy-coated steels
Interface shear strength
Large displacements
Shear displacement
University of British Columbia
Shear strength
TitleSome observations on soil-pipe interface shear strength in direct shear under low effective normal stresses and large displacements
TypeConference Paper
Volume Number2
dc.accessType Abstract Only


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