Wave Load‐Submarine Pipeline‐Seafloor Interaction
Publication: Journal of Transportation Engineering
Volume 111, Issue 3
Abstract
Pipeline stresses due to loss of support caused by depressions or scour below submarine pipelines are analyzed. The sea floor on which the pipe is resting is idealized by Winkler medium. Bending in horizontal plane due to hydrodynamic loads is considered in the analysis and theoretical equations and general solutions are presented. Theoretical results for vertical deflections due to loss of support are compared with experimental results, and computer results are presented in nondimensional form for a wide range of parameters. It is concluded that the stresses due to hydrodynamic drag will be affecting the resultant stresses considerably and will need consideration in the analysis. The deflection and moment coefficients are found to be linearly proportional to the load coefficient. An illustrative example has also been worked out to show the use of design charts.
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References
1.
Agarwal, S. A., and Malhotra, A. K., “Frictional Resistance for Submarine Pipeline in Soft Clays,” Proceedings, Geocon—India, Vol. I, Dec. 20–22, 1978, pp. 373–379.
2.
Ovunc, B., and Mallareddy, H., “Stress Analysis of Offshore Pipelines,” Proceedings, Offshore Technology Conference, Vol. I, Paper 1222, 1970, p. 727.
3.
Demars, K. R., Nacci, V. A., and Wang, W. D., “Pipeline Failure: A Need for Improved Analysis and Site Surveys,” Proceedings, Offshore Technology Conference, Vol. IV, OTC 2966, 1977, pp. 63–70.
4.
Hobbs, R. E., “A Beam Bending Problem with a Free Boundary,” Computers and Structures, Vol. 10, London, England, Dec. 1979, pp. 1003–1013.
5.
Hobbs, R. E., “Soil Modulus and Longitudinal Pipeline Stresses,” Proceedings, ASCE, Journal of Transportation Engineering, Nov., 1980, pp. 775–786.
6.
Jesse, R. W., “Offshore Pipeline Stress Analysis,” Proceedings, Offshore Technology Conference, Vol. 2, Paper 1227, 1970, pp. 11–20.
7.
Kerr, A. D., “Elastic and Viscoelastic Foundation Models,” Transactions, ASME, Vol. 31, No. 3, Paper No. 64, Sept., 1964, pp. 491–498.
8.
Maier, G., and Andreuzzi, F., “Elastic and Elastoplastic Analysis of Submarine Pipelines,” Computers and Structures, Vol. 8, London, England, May, 1978, pp. 421–432.
9.
Mousselli, A. H., Brown, R. J., and Associates, “Pipe Stresses at the Seabed During Installation and Trenching Operations,” Proceedings, Offshore Technology Conference, Paper 2965, Vol. 4, May, 1977, pp. 55–62.
10.
Pister, K. S., and Williams, M. L., “Bending of Plates on Viscoelastic Foundations,” Journal of the Engineering Mechanics Division, ASCE, Vol. 86, No. EM5, Proc. Paper 2619, Oct., 1960, pp. 31–44.
11.
Townsend, D. R., and Farley, D. W., “Design Criteria for Submarine Pipelines Crossings,” Proceedingsr, ASCE, Vol. 99, No. HY10, Oct., 1978, pp. 1659–1678.
12.
Wilhoit, J. C., Jr., and Merwin, J. E., “Pipe Stresses Induced in Laying Offshore Pipelines,” Journal of Engineering for Industry, ASME, Vol. 89, Jan., 1967, pp. 37–43.
Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 111 • Issue 3 • May 1985
Pages: 237 - 250
Copyright
Copyright © 1985 ASCE.
History
Published online: May 1, 1985
Published in print: May 1985
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