Stress relieving joint for pipe and method

Details Stress relieving joint for pipe and method Stress relieving joint for pipe and method

1995-04-28

1997-11-04

Graysay, Tamara L.

Hydraulic and earth engineering

Marine structure or fabrication thereof

With anchoring of structure to marine floor

403 41, F16B 100

Patent

active

056832052

ABSTRACT:
A stress relieving joint for pipe such as risers, tendons, and the like used in floating vessel systems wherein a vessel is subject to heave, pitch, and roll motion caused by wind, currents, and wave action; the pipe passing through a constraint opening in the vessel and connected to the sea floor and subject to bending or rotation at the constraint opening. The joint comprises a sleeve member of selected length with ends at opposite sides of the constraint opening and centralizing annuli or rings at sleeve member ends for providing spaced contact points or areas to distribute bending stresses imparted to the sleeve member at the constraint opening to the pipe at the sleeve member ends. A method of relieving or distributing stress in a pipe at a constraint location.

REFERENCES:
patent: 4185694 (1980-01-01), Horton
patent: 4740109 (1988-04-01), Horton

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