Influence of Tension, Weight, and Hydrostatic Pressure on TLP Tendons
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 115, Issue 2
Abstract
The effect of increasing water depth on the performance of deep water tendons of tension leg platforms (TLP) is examined. Equations to determine limits on water depths for tendon systems based on strength and hydrostatic collapse requirements are presented. Relations between tendon tensions and reactions on a TLP hull are derived. Conditions for which neutrally buoyant tendons can be utilized are presented. For very deep water, the limiting diameter‐to‐thickness ratio (D/t) is presented for different tendon variables. For a water depth of 5,000 feet, the D/t ratio is limited to about fifteen due to hydrostatic collapse constraints. Composite tendons can provide reduced pretension, improved restoring force, and reduced drag forces.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Bernitsas, M. M., and Kokkinis, T. (1983). “Buckling of risers in tension due to internal pressure: Nonmovable boundaries.” J. Energy Resour. Technol. Trans., ASME, 105(3), 277–281.
2.
Brekke, J. N., and Gardner, T. N. (1986). “Analysis of brief tension loss in TLP tethers.” Proc. Fifth Int. Offshore Mech. and Arctic Engrg. Symp., American Society of Mechanical Engineers, 3, 134–140.
3.
Larsen, C. M., et al. (1984). “Nonlinear static and dynamic behavior of tension leg platform tethers.” Proc. Third Int. Offshore Mech. and Arctic Engrg. Symp., American Society of Mechanical Engineering, 41–50.
4.
Mercier, J. A. (1982). “Evolution of tension leg platform technology.” Presented at Third Int. Conf. on the Behavior of Offshore Structures, Mass. Inst. of Tech.
5.
Murphey, C. E., and Langner, C. G. (1985). “Ultimate pipe strength under bending, collapse, and fatigue.” Proc. Fourth Int. Offshore Mech. and Arctic Engrg. Symp., American Society of Mech. Engrs., 1, 467–477.
6.
“Recommended practice for planning, designing, and constructing fixed offshore platforms.” (1986). API RP 2A, 16th Ed., American Petroleum Institute, Washington, D.C., 32.
7.
“Recommended practice for planning, designing, and constructing tension leg platforms.” (1987). API RP 2A, 1st Ed., American Petroleum Institute, Washington, D.C., 62.
8.
Salama, M. M. (1984). “Lightweight materials for mooring lines of deepwater tension leg platforms.” Journal of Marine Technology. 21(3), 234–241.
9.
Sparks, C. P. (1984). “The influence of tension, pressure and weight on pipe and riser deformations and stresses.” J. Energy Resour. Technol. Trans., ASME, 106(1), 46–54.
10.
Tetlow, J., and Leece, M. (1982). “Hutton TLP mooring system.” Proc. Offshore Tech. Conf., 573–584.
Information & Authors
Information
Published In
Copyright
Copyright © 1989 ASCE.
History
Published online: Mar 1, 1989
Published in print: Mar 1989
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.