Motion And Impact Responses Of Jackups Moving Onto Location

Abstract

The objectives and proposed approach for a jokft hdustty study to investigate the problems associated with jack-ups manoeuvring on and off location are described.The study involves assessments of appropriate wave statistics, jack-up motions, seabed response, dynamic impact analyses, and structura/ evacuation. The resu/ts are expected to be harnessed through an on-board PC-based unit.Results are reported from the motions analyses, soil-structure interaction, end 2-D impacts of the rbrward leg of a widely used rig onto clay, sand and rock. Conclusions drawn from these individual studies are presented together with a summary of progress on the remaining parts of the project.