Punch‐Through Instability of Jack‐Up on Seabed
Publication: Journal of Geotechnical Engineering
Volume 111, Issue 4
Abstract
A punch-through failure of a jack-up platform can occur as a result of an overall instability of the structure on the seabed even when the seabed has bearing capacity increasing with depth. The instability is analogous to the overturning of a top-heavy ship and to the Euler buckling of an inelastic strut. The instability starts when a small tilt of the structure causes an increase in the reaction on a penetrating leg which is greater than the increase in bearing resistance associated with the added penetration. The limiting weight and height to which a jack-up remains stable on a given foundation depends on the sequence of jacking and preloading of the legs.
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References
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Copyright © 1985 ASCE.
History
Published online: Apr 1, 1985
Published in print: Apr 1985
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