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DOI: 10.15862/03TS217 (https://doi.org/10.15862/03TS217)

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Muravieva L.V., Ovchinnikov I.G. [Definition of the subsea buried pipeline damage by the method of spectral summation of stresses under fluctuations from the technological and random seismic loads] Russian Journal of Transport Engineering, 2017, Vol. 4, No. 2. Available at: https://t-s.today/PDF/03TS217.pdf (in Russian). DOI: 10.15862/03TS217

Definition of the subsea buried pipeline damage by the method of spectral summation of stresses under fluctuations from the technological and random seismic loads

Muravieva Liudmila Victorovna
JSC «CDB Corall», Russia, Sevastopol
E-mail: rfludmia@yandex.ru

Ovchinnikov Igor Georgievich
National research nuclear university Moscow engineering physics institute
Balakovo institute of engineering and technology (branch), Russia, Balakovo
Yuri Gagarin state technical university of Saratov, Russia, Saratov
Perm national research polytechnic university, Russia, Perm
E-mail: bridgesar@mail.ru

Abstract. On the basis of the finite element method a technique is proposed for determining the damages and fatigue zones of the pipeline structure. The aim of the work is to assess the failures of natural gas pipelines due to fatigue caused by the transportation temperature cycling, which increases the development of defects. The requirement to ensure the operation of pipeline systems in case of an earthquake without stopping for repair works is the main one when in operation of the offshore pipelines. These requirements under conditions of extreme loads of a wide range, a combination of pressure and temperature and taking into account the appearance of the extreme natural effects result in the need for a solution of a number of problems associated with the evaluation of the stress-strain state of the pipeline.

Keywords: marine buried pipeline; fatigue assessment; damageability; spectrum; transfer function; seismic action; extreme loads

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