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Dergiler / Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi / 2026 / Cilt: 16 Sayı: 1

Evaluation of the Fatigue Performance of a Fixed Offshore Platform with Steel Group Piles under Combined Soil Effects

Mahir Aliyev(IGDIR UNIVERSITY, FACULTY OF ENGINEERING)0009-0001-9569-1152
Fethi Şermet(IGDIR UNIVERSITY, FACULTY OF ENGINEERING)0000-0001-8221-689X
Rüstem Gül(IGDIR UNIVERSITY, FACULTY OF ENGINEERING)0000-0003-1827-9137
Sayfa
182–196
Yayın Tarihi
2026-03-01
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

In this study, the fatigue behavior of platform steel piles was investigated under realistic environmental loads with return periods of 1 year (operational), 100 years (extreme), and 10,000 years (extraordinary).In addition, layered soil classes ZU1-ZU4, with different strength and stiffness values reflecting the soil type behavior of the Caspian Sea region, were modeled.Following the structural analyses, fatigue damage and fatigue life were determined in accordance with the DNV-RP-C203 (2016) and ISO 19902 (2007) standards.The equivalent stress ranges (Δσ) and the total fatigue damage (D_total) were obtained from the critical hot spots and calculated according to Miner’s linear damage accumulation rule method.All pile elements showed a fatigue strength performance exceeding 100 years, remaining below the design limit value of D = 0.04 for fatigue damage.The increase in cumulative damage under environmental loads with a 10,000-year return probability was found to be limited, suggesting that the effect of infrequent cyclic loads on the overall fatigue performance of the steel elements is low.Due to the stiffness differences and load transfer mechanisms between the soil classes, the stress and fatigue damage parameters were higher for the corner piles (B2, B6) compared to the interior piles (C2, C6).The study concludes that the pile elements provide good fatigue performance throughout their 25-year design life for the examined pile-foundation interactions.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:Fatigue occurs in the steel pile elements of jacket-type platforms because the piled foundations of offshore platform structures are exposed to cyclic dynamic loads.
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Temel Bulgular & Veri:Fatigue occurs in the steel pile elements of jacket-type platforms because the piled foundations of offshore platform structures are exposed to cyclic dynamic loads.
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Sonuç & Katkı:In this study, the fatigue behavior of platform steel piles was investigated under realistic environmental loads with return periods of 1 year (operational), 100 years (extreme), and 10,000 years (extraordinary).In addition, layered soil classes ZU1-ZU4, with different strength and stiffness values reflecting the soil type behavior of the Caspian Sea region, were modeled.Following the structural analyses, fatigue damage and fatigue life were determined in accordance with the DNV-RP-C203 (2016) and ISO 19902 (2007) standards.The equivalent stress ranges (Δσ) and the total fatigue damage (D_total) were obtained from the critical hot spots and calculated according to Miner’s linear damage accumulation rule method.All pile elements showed a fatigue strength performance exceeding 100 years, remaining below the design limit value of D = 0.04 for fatigue damage.The increase in cumulative damage under environmental loads with a 10,000-year return probability was found to be limited, suggesting that the effect of infrequent cyclic loads on the overall fatigue performance of the steel elements is low.Due to the stiffness differences and load transfer mechanisms between the soil classes, the stress and fatigue damage parameters were higher for the corner piles (B2, B6) compared to the interior piles (C2, C6).The study concludes that the pile elements provide good fatigue performance throughout their 25-year design life for the examined pile-foundation interactions.
🔬Tür:Modelleme & Sayısal Simülasyon
📍Kapsam:2016 Verileri
⚙️Değişkenler:Steel pile foundations · cyclic dynamic loads · fatigue performance

Abstract

Fatigue occurs in the steel pile elements of jacket-type platforms because the piled foundations of offshore platform structures are exposed to cyclic dynamic loads. In this study, the fatigue behavior of platform steel piles was investigated under realistic environmental loads with return periods of 1 year (operational), 100 years (extreme), and 10,000 years (extraordinary).In addition, layered soil classes ZU1-ZU4, with different strength and stiffness values reflecting the soil type behavior of the Caspian Sea region, were modeled.Following the structural analyses, fatigue damage and fatigue life were determined in accordance with the DNV-RP-C203 (2016) and ISO 19902 (2007) standards.The equivalent stress ranges (Δσ) and the total fatigue damage (D_total) were obtained from the critical hot spots and calculated according to Miner’s linear damage accumulation rule method.All pile elements showed a fatigue strength performance exceeding 100 years, remaining below the design limit value of D = 0.04 for fatigue damage.The increase in cumulative damage under environmental loads with a 10,000-year return probability was found to be limited, suggesting that the effect of infrequent cyclic loads on the overall fatigue performance of the steel elements is low.Due to the stiffness differences and load transfer mechanisms between the soil classes, the stress and fatigue damage parameters were higher for the corner piles (B2, B6) compared to the interior piles (C2, C6).The study concludes that the pile elements provide good fatigue performance throughout their 25-year design life for the examined pile-foundation interactions.

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Bu Makaleye Atıf Yap

Aliyev, M., Şermet, F., Gül, R. (2026). Evaluation of the Fatigue Performance of a Fixed Offshore Platform with Steel Group Piles under Combined Soil Effects. Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi, Cilt: 16 Sayı: 1, 182–196. https://doi.org/10.21597/jist.1834750

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Kaynakça (24)

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