Evaluation of un-and reloading stiffness and damping of monopile foundations in non-cohesive soils

Publikation: Beitrag in Buch/Bericht/Sammelwerk/KonferenzbandAufsatz in KonferenzbandForschungPeer-Review

Autoren

  • Jann Eike Sören Saathoff
  • Klaus Thieken
  • Martin Achmus

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Details

OriginalspracheEnglisch
Titel des SammelwerksProceedings of the 29th International Ocean and Polar Engineering Conference, ISOPE 2019
Herausgeber/-innenJin S. Chung, Odd M. Akselsen, HyunWoo Jin, Hiroyasu Kawai, Yongwon Lee, Dmitri Matskevitch, Suak Ho Van, Decheng Wan, Alan M. Wang, Satoru Yamaguchi
Herausgeber (Verlag)International Society of Offshore and Polar Engineers
ISBN (Print)9781880653852
PublikationsstatusVeröffentlicht - 16 Juni 2019
Veranstaltung29th International Ocean and Polar Engineering Conference, ISOPE 2019 - Honolulu, USA / Vereinigte Staaten
Dauer: 16 Juni 201921 Juni 2019

Publikationsreihe

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (elektronisch)1555-1792

Abstract

The foundation stiffness under operational loads is a crucial aspect for the design of monopile foundations, as key design issues, structural natural eigenfrequencies as well as the structural fatigue damage are significantly affected. According to measurement results, the current calculation methods lead to an underestimation of the actual existing foundation stiffness. Concerning this matter, this paper presents numerical simulations to derive foundation stiffnesses. Furthermore, the damping of the system is investigated from the calculated load-displacement and moment-rotation curves in order to determine the hysteretic damping ratios.

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Evaluation of un-and reloading stiffness and damping of monopile foundations in non-cohesive soils. / Saathoff, Jann Eike Sören; Thieken, Klaus; Achmus, Martin.
Proceedings of the 29th International Ocean and Polar Engineering Conference, ISOPE 2019. Hrsg. / Jin S. Chung; Odd M. Akselsen; HyunWoo Jin; Hiroyasu Kawai; Yongwon Lee; Dmitri Matskevitch; Suak Ho Van; Decheng Wan; Alan M. Wang; Satoru Yamaguchi. International Society of Offshore and Polar Engineers, 2019. (Proceedings of the International Offshore and Polar Engineering Conference).

Publikation: Beitrag in Buch/Bericht/Sammelwerk/KonferenzbandAufsatz in KonferenzbandForschungPeer-Review

Saathoff, JES, Thieken, K & Achmus, M 2019, Evaluation of un-and reloading stiffness and damping of monopile foundations in non-cohesive soils. in JS Chung, OM Akselsen, H Jin, H Kawai, Y Lee, D Matskevitch, S Ho Van, D Wan, AM Wang & S Yamaguchi (Hrsg.), Proceedings of the 29th International Ocean and Polar Engineering Conference, ISOPE 2019. Proceedings of the International Offshore and Polar Engineering Conference, International Society of Offshore and Polar Engineers, 29th International Ocean and Polar Engineering Conference, ISOPE 2019, Honolulu, USA / Vereinigte Staaten, 16 Juni 2019. <https://onepetro.org/ISOPEIOPEC/proceedings-abstract/ISOPE19/All-ISOPE19/ISOPE-I-19-166/20908>
Saathoff, J. E. S., Thieken, K., & Achmus, M. (2019). Evaluation of un-and reloading stiffness and damping of monopile foundations in non-cohesive soils. In J. S. Chung, O. M. Akselsen, H. Jin, H. Kawai, Y. Lee, D. Matskevitch, S. Ho Van, D. Wan, A. M. Wang, & S. Yamaguchi (Hrsg.), Proceedings of the 29th International Ocean and Polar Engineering Conference, ISOPE 2019 (Proceedings of the International Offshore and Polar Engineering Conference). International Society of Offshore and Polar Engineers. https://onepetro.org/ISOPEIOPEC/proceedings-abstract/ISOPE19/All-ISOPE19/ISOPE-I-19-166/20908
Saathoff JES, Thieken K, Achmus M. Evaluation of un-and reloading stiffness and damping of monopile foundations in non-cohesive soils. in Chung JS, Akselsen OM, Jin H, Kawai H, Lee Y, Matskevitch D, Ho Van S, Wan D, Wang AM, Yamaguchi S, Hrsg., Proceedings of the 29th International Ocean and Polar Engineering Conference, ISOPE 2019. International Society of Offshore and Polar Engineers. 2019. (Proceedings of the International Offshore and Polar Engineering Conference).
Saathoff, Jann Eike Sören ; Thieken, Klaus ; Achmus, Martin. / Evaluation of un-and reloading stiffness and damping of monopile foundations in non-cohesive soils. Proceedings of the 29th International Ocean and Polar Engineering Conference, ISOPE 2019. Hrsg. / Jin S. Chung ; Odd M. Akselsen ; HyunWoo Jin ; Hiroyasu Kawai ; Yongwon Lee ; Dmitri Matskevitch ; Suak Ho Van ; Decheng Wan ; Alan M. Wang ; Satoru Yamaguchi. International Society of Offshore and Polar Engineers, 2019. (Proceedings of the International Offshore and Polar Engineering Conference).
Download
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abstract = "The foundation stiffness under operational loads is a crucial aspect for the design of monopile foundations, as key design issues, structural natural eigenfrequencies as well as the structural fatigue damage are significantly affected. According to measurement results, the current calculation methods lead to an underestimation of the actual existing foundation stiffness. Concerning this matter, this paper presents numerical simulations to derive foundation stiffnesses. Furthermore, the damping of the system is investigated from the calculated load-displacement and moment-rotation curves in order to determine the hysteretic damping ratios.",
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AU - Achmus, Martin

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N2 - The foundation stiffness under operational loads is a crucial aspect for the design of monopile foundations, as key design issues, structural natural eigenfrequencies as well as the structural fatigue damage are significantly affected. According to measurement results, the current calculation methods lead to an underestimation of the actual existing foundation stiffness. Concerning this matter, this paper presents numerical simulations to derive foundation stiffnesses. Furthermore, the damping of the system is investigated from the calculated load-displacement and moment-rotation curves in order to determine the hysteretic damping ratios.

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