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Seismic response analysis of offshore pipelines in contact with the sea‐bed
Author(s) -
Nath B.,
Soh C. H.
Publication year - 1978
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620130113
Subject(s) - submarine pipeline , seabed , drag , geology , pipeline transport , geotechnical engineering , pipeline (software) , attenuation , mechanics , marine engineering , engineering , oceanography , physics , mechanical engineering , optics , environmental engineering
The seismic behaviour of an offshore pipeline, which may be totally or partially in contact with the sea‐bed, is characterized by the confluence of structural dynamics, hydrodynamics and soil mechanics and also the possible dynamic interactions between these aspects. This paper contains a study dealing with the seismic response analysis of such a pipeline including pressure drag effects. A numerical analysis basesd on the assumption that the pipe behaves linearly elastically and that pipe deffection is elastoplastically related, without loss, to sea‐bed resistance shows that pipe response in significantly attenuated by contact, as aspected, the amount of attenuation depending upon contact length and the parameters defining idealized sea‐bed behaviour.