The design features of a submerged pipeline anchoring unit developed in response to the need for a more reliable design, are discussed in this paper. Such a need was evidenced by the displacement of Southern Union Gas Company's 14-inch gas pipeline across Galveston Bay as a result of Hurricane Carla in 1962. The pipeline anchor developed and discussed in this report, is designed to pin the pipeline on the ocean floor or in a jetted trench. The pipe is designed to sink to the bottom; then two special offshore multi-helix anchors and a formed padded bracket are installed over the pipe. A high powered hydraulic unit is used to install both anchors simultaneously, minimizing installation effort. Holding capacity theories; such as the "cone of earth theory" are discussed as they relate to the concept developed herein. Results of an evaluation test program for this anchor design are examined. The author's remarks are concluded with a brief discussion of the economic advantages to be realized by implementing this pipeline anchoring system.

Media Info

  • Features: References;
  • Pagination: p. 602-624

Subject/Index Terms

Filing Info

  • Accession Number: 00050911
  • Record Type: Publication
  • Source Agency: National Maritime Research Center, Galveston
  • Files: TRIS
  • Created Date: Jan 31 1974 12:00AM