Effects of nonlinear riser-soil interaction model on fatigue design of steel catenary riser under random waves

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Abstract

Steel Catenary Risers (SCRs) are one of the main components in development of oil and gas fields in deep waters. Fatigue design of SCRs in touch down zone (TDZ) is one of the main engineering challenges in design of riser systems. Nonlinear riser-soil interaction models have recently been introduced and used widely in advanced structural analysis of SCRs. Due to hysteretic nonlinear behavior of the soil, SCR system will show different structural response under different loading time histories. This paper investigates the effects of nonlinear riser-soil interaction in the TDZ on fatigue performance of an example SCR subjected to randomly generated waves. Sensitivity of fatigue life of the system, location of the critical node and the maximum stress range to different wave realizations and different soil types are discussed in detail. Copyright © 2017 ASME.
Original languageEnglish
Title of host publicationProceedings of the ASME 36th International Conference on Ocean, Offshore and Arctic Engineering
Place of PublicationNew York
PublisherASME International
Number of pages9
Volume5B
ISBN (Print)9780791857700
DOIs
Publication statusPublished - 2017
EventASME 36th International Conference on Offshore Mechanics and Arctic Engineering - Trondheim, Norway
Duration: 25 Jun 201730 Jun 2017

Conference

ConferenceASME 36th International Conference on Offshore Mechanics and Arctic Engineering
Abbreviated titleOMAE
Country/TerritoryNorway
CityTrondheim
Period25/06/1730/06/17

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