Please use this identifier to cite or link to this item: https://doi.org/10.1139/t11-088
Title: Deep cavity flow mechanism of pipe penetration in clay
Authors: Tho, Kee Kiat 
Leung, Chun Fai 
Chow, Yean Khow 
Palmer, Andrew Clennel 
Keywords: Science & Technology
Technology
Physical Sciences
Engineering, Geological
Geosciences, Multidisciplinary
Engineering
Geology
pipe
frictionless
deep cavity flow mechanism
clay
Issue Date: 1-Jan-2012
Publisher: CANADIAN SCIENCE PUBLISHING
Citation: Tho, Kee Kiat, Leung, Chun Fai, Chow, Yean Khow, Palmer, Andrew Clennel (2012-01-01). Deep cavity flow mechanism of pipe penetration in clay. CANADIAN GEOTECHNICAL JOURNAL 49 (1) : 59-69. ScholarBank@NUS Repository. https://doi.org/10.1139/t11-088
Abstract: The evolution of penetration resistance as a function of penetration depth of a pipe into a cohesive seabed is of practical importance, particularly in the areas of pipeline on-bottom stability assessment and T-bar penetrometer data interpretation. In the past, this subject was addressed primarily in a discontinuous manner by separating the penetration response into two broad regimes of shallow and deep penetrations followed by deriving plasticity solutions assuming a simplified "wished-in-place" configuration. In this manner, the effects of evolving seabed topology and the progressive transition from a shallow failure mechanism to a deep failure mechanism are neglected. This paper aims to provide greater insights into the transition zone, which is especially important for the interpretation of T-bar test data at shallow depths. In this study, the penetration response of a smooth pipe over a wide range of normalized clay strengths is numerically simulated. A deep cavity flow mechanism where the bearing capacity factor is 12% less than the conventional full-flow mechanism is identified and found to be operative up to a depth of 10 pipe diameters under a certain combination of material properties. An analysis method is proposed to predict the load-penetration response for a given set of clay strengths and pipe diameters.
Source Title: CANADIAN GEOTECHNICAL JOURNAL
URI: https://scholarbank.nus.edu.sg/handle/10635/210963
ISSN: 00083674
12086010
DOI: 10.1139/t11-088
Appears in Collections:Staff Publications
Elements

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
2012 Kee Kiat pipe in clay CGJ.pdf2.45 MBAdobe PDF

CLOSED

None

SCOPUSTM   
Citations

43
checked on May 22, 2022

Page view(s)

52
checked on May 12, 2022

Download(s)

3
checked on May 12, 2022

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.