Influence of loads in the process of laying on the resource of sea pipelines

• Autorzy: Poberezhnyi L. , Tregubenko S. , Poberezhna L. , Hrytsanchuk A. , Stanetsky A.

Identyfikatory

DOI

10.5604/01.3001.0013.2385

• Języki publikacji: EN

Abstrakty

EN

Purpose: In the process of laying on the bottom of the sea material of the pipeline undergoes single-cycle alternating load. The purpose of the work is to determine the effect of pre-operational loads on the resource of marine pipelines. Design/methodology/approach: The influence of the method of construction of pipelines on their stress-strain state is analysed. According to the real modes of packing of sea pipelines, the loading regime is programmed and the laboratory modelling of the pipelaying process by the S-method has been programmed. Findings: According to the results of one-cycle shift load were obtained characteristics of the hysteresis loop. It is proposed to simplify the mathematical description of the hysteresis loop of the pipeline laying cycle in the given form. It was shown that the preload during the construction process negatively affects the durability of the pipeline material due to the exhaustion of its plasticity resource, reducing it to 70%. Research limitations/implications: In the future, investigations into the effect of overloading and overloading during the repair of pipeline sections on their durability and on the safe exploitation of resources should be continued. Practical implications: The developed method of estimation of influence of preoperational loads in the process of pipeline laying on its safe exploitation resource is used in gas-extraction enterprises. Originality/value: To forecast the deformation behaviour of the pipeline material in the laying cycle, it is efficient to use diagrams of a sign-changing single-cycle bend, which were built considering the creep. The fatigue life capability of a steel pipeline depends on the history of the pipeline load in the laying cycle. Ratio σ*_0.2c / σ* _{0.2t and εyc} / ε _yt can use as power and deformation criteria for evaluating Bauschinger effect. It is suggested that fatigue damage is determined by the width of the hysteresis loop.

Słowa kluczowe

EN

subsea pipeline; preoperational load; corrosion fatigue; kinetic of deformation; resource of safe operation

PL

rurociąg podmorski; obciążenie przedoperacyjne; zmęczenie korozyjne; kinetyka deformacji; zasób bezpiecznej pracy

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2019
• Tom: Vol. 96, nr 2
• Strony: 63--72
• Opis fizyczny: Bibliogr. 30 poz.

Twórcy

autor

Poberezhnyi L.

• Department of Chemistry, Institute of Tourism and Geosciences, Ivano-Frankivsk National Technical University of Oil and Gas, 15, Karpatska str., Ivano-Frankivsk, Ukraine

autor

Tregubenko S.

• Central Research Institute of the Military Forces of Ukraine, 28b, Povitroflotskyy pr., Kyiv, Ukraine

autor

Poberezhna L.

• Department of Medical Informatics, Medical and Biological Physics, Pharmaceutical Faculty, Ivano-Frankivsk National Medical University, 12, Galytska str., Ivano-Frankivsk, Ukraine

autor

Hrytsanchuk A.

• Department of Petroleum Production, Institute of Petroleum Engineering, Ivano-Frankivsk National Technical University of Oil and Gas, 15, Karpatska str., Ivano-Frankivsk, Ukraine

autor

Stanetsky A.

• Department of Military Training, Institute of Petroleum Engineering, Ivano-Frankivsk National Technical University of Oil and Gas, 15, Karpatska str., Ivano-Frankivsk, Ukraine

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).