Bearing capacities of spudcan foundations in clay after penetrating through a sand layer

Research output: Contribution to conferenceConference presentation/ephemera

Abstract


Layered seabeds are prevalent in many emerging provinces and sand-over-clay soil stratigraphy is particularly problematic. However, the behaviour of spudcans under combined vertical (V), horizontal (H) and moment (M) loading in such layered soil stratigraphy is not well understood and VHM yield surfaces are not defined. Centrifuge model tests in the literature have shown that a sand plug trapped underneath the spudcan increases the vertical capacity, but its effect on the horizontal and moment capacity has not yet been investigated. A set of geotechnical centrifuge test has been reported to establish the VHM yield surface of a spudcan that has been installed through a layer of sand into underlying clay. This paper is a follow-up analysis of the centrifuge testing result. Numerical simulations are presented to derive the bearing capacity factors, investigating the effect of the trapped sand plug underneath the spudcan and the backfill soil. Findings from the testing and numerical simulations are discussed.

Original languageEnglish
Publication statusPublished - 2017
Event16th International Conference The Jack-up Platform
: Design, Construction & Operation
- London, United Kingdom
Duration: 19 Sep 201720 Sep 2017

Conference

Conference16th International Conference The Jack-up Platform
CountryUnited Kingdom
CityLondon
Period19/09/1720/09/17

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bearing capacity
centrifuge
clay
sand
stratigraphy
backfill
clay soil
model test
simulation
soil
effect

Cite this

Hu, P., Bienen, B., & Cassidy, M. J. (2017). Bearing capacities of spudcan foundations in clay after penetrating through a sand layer. Paper presented at 16th International Conference The Jack-up Platform
, London, United Kingdom.
Hu, P. ; Bienen, B. ; Cassidy, M.J. / Bearing capacities of spudcan foundations in clay after penetrating through a sand layer. Paper presented at 16th International Conference The Jack-up Platform
, London, United Kingdom.
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title = "Bearing capacities of spudcan foundations in clay after penetrating through a sand layer",
abstract = "Layered seabeds are prevalent in many emerging provinces and sand-over-clay soil stratigraphy is particularly problematic. However, the behaviour of spudcans under combined vertical (V), horizontal (H) and moment (M) loading in such layered soil stratigraphy is not well understood and VHM yield surfaces are not defined. Centrifuge model tests in the literature have shown that a sand plug trapped underneath the spudcan increases the vertical capacity, but its effect on the horizontal and moment capacity has not yet been investigated. A set of geotechnical centrifuge test has been reported to establish the VHM yield surface of a spudcan that has been installed through a layer of sand into underlying clay. This paper is a follow-up analysis of the centrifuge testing result. Numerical simulations are presented to derive the bearing capacity factors, investigating the effect of the trapped sand plug underneath the spudcan and the backfill soil. Findings from the testing and numerical simulations are discussed.",
author = "P. Hu and B. Bienen and M.J. Cassidy",
year = "2017",
language = "English",
note = "16th International Conference The Jack-up Platform<br/> : Design, Construction &amp; Operation ; Conference date: 19-09-2017 Through 20-09-2017",

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Hu, P, Bienen, B & Cassidy, MJ 2017, 'Bearing capacities of spudcan foundations in clay after penetrating through a sand layer' Paper presented at 16th International Conference The Jack-up Platform
, London, United Kingdom, 19/09/17 - 20/09/17, .

Bearing capacities of spudcan foundations in clay after penetrating through a sand layer. / Hu, P.; Bienen, B.; Cassidy, M.J.

2017. Paper presented at 16th International Conference The Jack-up Platform
, London, United Kingdom.

Research output: Contribution to conferenceConference presentation/ephemera

TY - CONF

T1 - Bearing capacities of spudcan foundations in clay after penetrating through a sand layer

AU - Hu, P.

AU - Bienen, B.

AU - Cassidy, M.J.

PY - 2017

Y1 - 2017

N2 - Layered seabeds are prevalent in many emerging provinces and sand-over-clay soil stratigraphy is particularly problematic. However, the behaviour of spudcans under combined vertical (V), horizontal (H) and moment (M) loading in such layered soil stratigraphy is not well understood and VHM yield surfaces are not defined. Centrifuge model tests in the literature have shown that a sand plug trapped underneath the spudcan increases the vertical capacity, but its effect on the horizontal and moment capacity has not yet been investigated. A set of geotechnical centrifuge test has been reported to establish the VHM yield surface of a spudcan that has been installed through a layer of sand into underlying clay. This paper is a follow-up analysis of the centrifuge testing result. Numerical simulations are presented to derive the bearing capacity factors, investigating the effect of the trapped sand plug underneath the spudcan and the backfill soil. Findings from the testing and numerical simulations are discussed.

AB - Layered seabeds are prevalent in many emerging provinces and sand-over-clay soil stratigraphy is particularly problematic. However, the behaviour of spudcans under combined vertical (V), horizontal (H) and moment (M) loading in such layered soil stratigraphy is not well understood and VHM yield surfaces are not defined. Centrifuge model tests in the literature have shown that a sand plug trapped underneath the spudcan increases the vertical capacity, but its effect on the horizontal and moment capacity has not yet been investigated. A set of geotechnical centrifuge test has been reported to establish the VHM yield surface of a spudcan that has been installed through a layer of sand into underlying clay. This paper is a follow-up analysis of the centrifuge testing result. Numerical simulations are presented to derive the bearing capacity factors, investigating the effect of the trapped sand plug underneath the spudcan and the backfill soil. Findings from the testing and numerical simulations are discussed.

UR - https://www.researchgate.net/publication/320173754_BEARING_CAPACITIES_OF_SPUDCAN_FOUNDATIONS_IN_CLAY_AFTER_PENETRATING_THROUGH_A_SAND_LAYER

M3 - Conference presentation/ephemera

ER -

Hu P, Bienen B, Cassidy MJ. Bearing capacities of spudcan foundations in clay after penetrating through a sand layer. 2017. Paper presented at 16th International Conference The Jack-up Platform
, London, United Kingdom.