Axial load tests on pipe piles in very dense sands at Ras Tanajib

Kolk, H.J.; Shafei, Kareem El; Dakhil, Osama Abdul Azeez; Baaijens, A

doi:10.1201/noe0415390637.ch87

Frontiers in Offshore Geotechnics 2005

DOI: 10.1201/noe0415390637.ch87

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Axial load tests on pipe piles in very dense sands at Ras Tanajib

H.J. Kolk¹,

Kareem El Shafei²,

Osama Abdul Azeez Dakhil³

et al.

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“…An alternative CPT design method known as Fugro-05 was developed specifically for offshore open-ended piles by Kolk et al (2005b). The authors compiled a database of large-scale instrumented load tests, which included tests performed for the EURIPIDES project (Kolk et al, 2005a), tests at Ras Tanajib (Kolk et al, 2005b) and at Jamuna bridge (Jardine et al 2006) and a small number of additional load tests. They reasoned that since offshore piles usually have large diameters, the effects of dilation could be ignored.…”

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confidence: 99%

Piles for offshore wind turbines: a state-of-the-art review

Gavin

Igoe

Doherty

2011

Proceedings of the Institution of Civil Engineers - Geotechnica

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The paper considers the current state of the art for estimating the pull-out capacity of driven open-ended piles used to support wind turbine foundations founded on sand. The latest edition of the American Petroleum Institute guidelines for pile design includes a conventional earth pressure approach and four alternative cone penetration test (CPT) methods for estimating pile shaft resistance in sand.A database of open-ended pile tests was used to assess the predictive reliability of the design approaches. While the earth pressure approach was unreliable, exhibiting bias with pile slenderness and sand relative density, the CPT methods were shown to provide improved and relatively consistent estimates of pile capacity. However, the tension loads experienced by wind turbine foundations are significantly higher than those applied to piles in the database. When the CPT methods were used to estimate the pile length required to support a 5 MW turbine installed in typical offshore soil conditions, the CPT methods provided a wide range of predicted pile lengths. The reasons for this divergence are discussed and an alternative framework for considering driven pile shaft resistance is put forward.

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confidence: 99%

Piles for offshore wind turbines: a state-of-the-art review

Gavin

Igoe

Doherty

2011

Proceedings of the Institution of Civil Engineers - Geotechnica

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Database Assessment of CPT-Based Design Methods for Axial Capacity of Driven Piles in Siliceous Sands

Schneider

Lehane

2008

J. Geotech. Geoenviron. Eng.

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Axial load tests on pipe piles in very dense sands at Ras Tanajib

Cited by 2 publications

References 0 publications

Piles for offshore wind turbines: a state-of-the-art review

Piles for offshore wind turbines: a state-of-the-art review

Database Assessment of CPT-Based Design Methods for Axial Capacity of Driven Piles in Siliceous Sands

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