SETTLEMENT OF MAT-SUPPORTED MOBILE UNITS IN VERY SOFT CLAYS

The behaviour of a mat-supported mobile rig founded on very soft clay has been examined. The settlement of the mat into the clay during preload when setting up on the location is used to arrive at the ultimate bearing capacity of the soil. Analyses are then made of the bearing pressure of the mat on the soil when the mobile unit is subjected to storm loadings and these bearing pressures are compared to the ultimate soil bearing pressures generated during settlements that accompanied preloading. This comparison provides guidelines for predictions of additional settlements that may occur under the storm loadings. The method of computing bearing pressures under storm loadings is unique in that it considers elastic-plastic response of the soil resistance as contrasted to conventional elastic solutions or equivalent-area solutions.

• Supplemental Notes:
  • 22nd Annual Offshore Technology Conference, held 7-10 May 1990, Tx, USA. Proceedings, v 4 Paper OTC 6468, p 391 [10 p, 6 ref, 10 fig]
• Authors:
  • Cox, W R
  • McClure, S C
  • Sorensen, K H
• Publication Date: 1990

Language

• English

Subject/Index Terms

• TRT Terms: Clay; Environmental impacts; Offshore structures; Soil structure interaction
• Subject Areas: Bridges and other structures; Marine Transportation;

Filing Info

• Accession Number: 00698635
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM