SEA-LINE LAYING IN DEEP WATERS

In the mathematical model of the laying in deep waters neither the large deformations nor the large displacements can be neglected. Therefore, the equilibrium configuration is the solution of a nonlinear integrodifferential equation with idoneous boundary conditions. The resolutive technique of this equation has involved a reformulation of the problem, namely finally the solution of a nonlinear integral equations system. The presence of currents involves a deflection of the elastic line from the laying vertical plane and then the calculation of its tridimensional equilibrium configuration. In practical cases, the traction applied by tensioner contains the deflection between small values with respect to the launching span length. Therefore, it has been obvious to construct the tridimensional mathematical model by properly combining the previous model in large deformations for vertical projection with a small deformations model for the horizontal projection of the elastic line. Meteorological and environmental conditions can require the carrying cut of abandonment operations (and subsequent recovery) of the sea line.

• Supplemental Notes:
  • Offshore Technology Conference 8th Annual, Proceedings, Houston, Texas, May 3-6, 1976.
• Corporate Authors:

  Offshore Technology Conference

  6200 North Central Expressway
  Dallas, TX  United States  45206
• Authors:
  • Matteelli, R
  • Andreuzzi, F
  • Taddei, F
• Conference:
  • Offshore Technology Conference 8th Annual, Proceedings, Houston, Texas, May 3-6, 1976.
• Publication Date: 1976-5

Media Info

• Features: References;
• Pagination: p. 695-707

Subject/Index Terms

• TRT Terms: Pipe laying; Underwater construction
• Candidate Terms: Pipe laying ships
• Subject Areas: Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00148532
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: V3, OTC 2677 Proceeding
• Files: TRIS
• Created Date: Feb 23 1977 12:00AM