Shallow circular foundations under undrained general combined loading in three-dimensional space

As mobile jack-up drilling rigs (Fig. 1) are not custombuilt for a particular site, the current guidelines (SNAME 2002) require a site-specific assessment to be performed for each new location before the platform can be installed. This demonstration of the rig’s capacity to withstand the 50-year return period storm is typically carried out as a push-over analysis.