Russian Journal of Transport Engineering
Russian journal of transport engineering
           

2018, Vol. 5, No. 1. - go to content...

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DOI: 10.15862/14SATS118 (https://doi.org/10.15862/14SATS118)

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Ovchinnikov I.G., Muravieva L.V. Problems of the reinforced concrete coating of the offshore pipelines exposed to seismic impact. Russian Journal of Transport Engineering. 2018; 5(1). Available at: https://t-s.today/PDF/14SATS118.pdf (in Russian). DOI: 10.15862/14SATS118


Problems of the reinforced concrete coating of the offshore pipelines exposed to seismic impact

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

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

Abstract. Presently bending analysis methods for the concrete coated pipes have not been developed in Russia. DNV rules and standards are currently applicable for this purpose. Stress concentration factor (SCF) for FJ zone (start of the concrete coating) is analyzed in this article along with the distribution of the shear stresses in the vicinity of the weld and starting point of the concrete coating. Variable stiffness pipe model was used for analysis.

The article describes (variation) of the shear stresses in the weld zone of the concrete coated pipelines under seismic loads. Semi-analytical model and the computer simulation results of the stress and strain state of the coated pipeline are shown in this paper. Variations in the shear stresses of the concrete coated pipe cross sections and FJ zone (start of the concrete coating) have been addressed.

Keywords: seismic design; subsea pipelines, reinforced concrete coating; crack resistance

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ISSN 2413-9807 (Online)

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