THEORETICAL AND EXPERIMENTAL ANALYSIS OF SOIL-PIPE INTERACTION AT FREE SPAN SHOULDERS FOR OSCILLATING PIPELINES

The behaviour of the surface layers of marine sediment under the cyclic loads transmitted by an oscillating submarine pipeline, affects the response of the pipeline as the sediment acts as a restraint and helps to dissipate the work performed by the hydrodynamic forces on the pipe. In this field experimental data is of the utmost importance to calibrate parameters to be used in engineering models, due to the intrinsic difficulty of interpreting and modelling theoretically the reaction from the generally loose surface layers of highly nonlinear constructive nature. After a brief introduction of the main aspects of pipe-soil interaction under dynamic conditions, the following is described: - brief details of the full-scale experimental approach for the simulation of dynamic conditions at free span shoulders - the methodology adopted to interpret the results, in particular to define the local parameters of stiffness and damping given by the bearing soil - some relevant findings, where the limits of the adopted techniques with respect to the goals and potential use of the results are defined.

• Supplemental Notes:
  • European Offshore Mechanics Symposium, 1st 20-22 Aug 1990, Trondheim, Norway. Sponsored and publ by the International Soc of Offshore & Polar Engrs (ISOPE), Proc, p 358 [10 p, 24 ref, 2 tab, 10 fig]
• Authors:
  • BERNETTI, R
  • Bruschi, R
• Publication Date: 1990

Language

• English

Subject/Index Terms

• TRT Terms: Analysis; Oscillation; Pipelines; Soil structure interaction
• Old TRIS Terms: Oscillating bodies
• Subject Areas: Marine Transportation; Pipelines; Terminals and Facilities;

Filing Info

• Accession Number: 00699768
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM