A Macro-Element Approach for Non-linear Response of Offshore Skirted Footings

Amin Barari; Lars Bo Ibsen

doi:10.1007/978-3-319-95771-5_11

A Macro-Element Approach for Non-linear Response of Offshore Skirted Footings

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

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Abstract

In recent times, shallow foundations have become more diverse, and now include concrete or steel bucket foundations used as anchors for floating platforms or as foundation for offshore wind turbines. They are always subjected to significant cyclic lateral loads due to wind and wave action. A work-hardening plasticity model for the moment and horizontal force resultants associated with the displacements of the offshore suction caissons is herein developed.

In addition, in order to better understand the performance of offshore bucket foundations under cyclic lateral loads series of cyclic lateral load tests were carried out on small scale models in a special rig developed for the cyclic tests at Aalborg University. The influence of cyclic lateral loads on the bucket lateral secant stiffness is investigated and a function is utilized to investigate it due to permanent displacements. The bucket stiffness increased with number of cycles irrespective of the load characteristics which contradicts the traditional solutions to tackle this complex situation.

Original language	English
Title of host publication	New Prospects in Geotechnical Engineering Aspects of Civil Infrastructures : Proceedings of the 5th GeoChina International Conference 2018 – Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, held on July 23 to 25, 2018 in HangZhou, China
Editors	Hadi Khabbaz, Heejung Youn, Mounir Bouassida
Publisher	Springer
Publication date	2018
Pages	127-139
Article number	SUCI-D-17-00230
ISBN (Print)	978-3-319-95770-8
ISBN (Electronic)	978-3-319-95771-5
DOIs	https://doi.org/10.1007/978-3-319-95771-5_11
Publication status	Published - 2018
Event	The 5th GeoChina International Conference 2018: Civil Infrastructures Confronting Severe Weathers and Climate Changes Conference - HangZhou, China Duration: 23 Jul 2018 → 25 Jul 2018 Conference number: 5

Conference

Conference	The 5th GeoChina International Conference 2018
Number	5
Country/Territory	China
City	HangZhou
Period	23/07/2018 → 25/07/2018

Series	Sustainable Civil Infrastructures
ISSN	2366-3405

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10.1007/978-3-319-95771-5_11

ManuscriptAccepted author manuscript, 1.37 MB

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Barari, A., & Ibsen, L. B. (2018). A Macro-Element Approach for Non-linear Response of Offshore Skirted Footings. In H. Khabbaz, H. Youn, & M. Bouassida (Eds.), New Prospects in Geotechnical Engineering Aspects of Civil Infrastructures: Proceedings of the 5th GeoChina International Conference 2018 – Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, held on July 23 to 25, 2018 in HangZhou, China (pp. 127-139). Article SUCI-D-17-00230 Springer. https://doi.org/10.1007/978-3-319-95771-5_11

Barari, Amin ; Ibsen, Lars Bo. / A Macro-Element Approach for Non-linear Response of Offshore Skirted Footings. New Prospects in Geotechnical Engineering Aspects of Civil Infrastructures: Proceedings of the 5th GeoChina International Conference 2018 – Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, held on July 23 to 25, 2018 in HangZhou, China. editor / Hadi Khabbaz ; Heejung Youn ; Mounir Bouassida. Springer, 2018. pp. 127-139 (Sustainable Civil Infrastructures).

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title = "A Macro-Element Approach for Non-linear Response of Offshore Skirted Footings",

abstract = "In recent times, shallow foundations have become more diverse, and now include concrete or steel bucket foundations used as anchors for floating platforms or as foundation for offshore wind turbines. They are always subjected to significant cyclic lateral loads due to wind and wave action. A work-hardening plasticity model for the moment and horizontal force resultants associated with the displacements of the offshore suction caissons is herein developed.In addition, in order to better understand the performance of offshore bucket foundations under cyclic lateral loads series of cyclic lateral load tests were carried out on small scale models in a special rig developed for the cyclic tests at Aalborg University. The influence of cyclic lateral loads on the bucket lateral secant stiffness is investigated and a function is utilized to investigate it due to permanent displacements. The bucket stiffness increased with number of cycles irrespective of the load characteristics which contradicts the traditional solutions to tackle this complex situation.",

author = "Amin Barari and Ibsen, {Lars Bo}",

year = "2018",

doi = "10.1007/978-3-319-95771-5_11",

language = "English",

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series = "Sustainable Civil Infrastructures",

publisher = "Springer",

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editor = "Hadi Khabbaz and Heejung Youn and Mounir Bouassida",

booktitle = "New Prospects in Geotechnical Engineering Aspects of Civil Infrastructures",

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note = "The 5th GeoChina International Conference 2018 : Civil Infrastructures Confronting Severe Weathers and Climate Changes Conference, GeoChina ; Conference date: 23-07-2018 Through 25-07-2018",

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Barari, A & Ibsen, LB 2018, A Macro-Element Approach for Non-linear Response of Offshore Skirted Footings. in H Khabbaz, H Youn & M Bouassida (eds), New Prospects in Geotechnical Engineering Aspects of Civil Infrastructures: Proceedings of the 5th GeoChina International Conference 2018 – Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, held on July 23 to 25, 2018 in HangZhou, China., SUCI-D-17-00230, Springer, Sustainable Civil Infrastructures, pp. 127-139, The 5th GeoChina International Conference 2018, HangZhou, China, 23/07/2018. https://doi.org/10.1007/978-3-319-95771-5_11

A Macro-Element Approach for Non-linear Response of Offshore Skirted Footings. / Barari, Amin; Ibsen, Lars Bo.
New Prospects in Geotechnical Engineering Aspects of Civil Infrastructures: Proceedings of the 5th GeoChina International Conference 2018 – Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, held on July 23 to 25, 2018 in HangZhou, China. ed. / Hadi Khabbaz; Heejung Youn; Mounir Bouassida. Springer, 2018. p. 127-139 SUCI-D-17-00230 (Sustainable Civil Infrastructures).

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - A Macro-Element Approach for Non-linear Response of Offshore Skirted Footings

AU - Barari, Amin

AU - Ibsen, Lars Bo

N1 - Conference code: 5

PY - 2018

Y1 - 2018

N2 - In recent times, shallow foundations have become more diverse, and now include concrete or steel bucket foundations used as anchors for floating platforms or as foundation for offshore wind turbines. They are always subjected to significant cyclic lateral loads due to wind and wave action. A work-hardening plasticity model for the moment and horizontal force resultants associated with the displacements of the offshore suction caissons is herein developed.In addition, in order to better understand the performance of offshore bucket foundations under cyclic lateral loads series of cyclic lateral load tests were carried out on small scale models in a special rig developed for the cyclic tests at Aalborg University. The influence of cyclic lateral loads on the bucket lateral secant stiffness is investigated and a function is utilized to investigate it due to permanent displacements. The bucket stiffness increased with number of cycles irrespective of the load characteristics which contradicts the traditional solutions to tackle this complex situation.

AB - In recent times, shallow foundations have become more diverse, and now include concrete or steel bucket foundations used as anchors for floating platforms or as foundation for offshore wind turbines. They are always subjected to significant cyclic lateral loads due to wind and wave action. A work-hardening plasticity model for the moment and horizontal force resultants associated with the displacements of the offshore suction caissons is herein developed.In addition, in order to better understand the performance of offshore bucket foundations under cyclic lateral loads series of cyclic lateral load tests were carried out on small scale models in a special rig developed for the cyclic tests at Aalborg University. The influence of cyclic lateral loads on the bucket lateral secant stiffness is investigated and a function is utilized to investigate it due to permanent displacements. The bucket stiffness increased with number of cycles irrespective of the load characteristics which contradicts the traditional solutions to tackle this complex situation.

U2 - 10.1007/978-3-319-95771-5_11

DO - 10.1007/978-3-319-95771-5_11

M3 - Article in proceeding

SN - 978-3-319-95770-8

T3 - Sustainable Civil Infrastructures

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EP - 139

BT - New Prospects in Geotechnical Engineering Aspects of Civil Infrastructures

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A2 - Bouassida, Mounir

PB - Springer

T2 - The 5th GeoChina International Conference 2018

Y2 - 23 July 2018 through 25 July 2018

ER -

Barari A, Ibsen LB. A Macro-Element Approach for Non-linear Response of Offshore Skirted Footings. In Khabbaz H, Youn H, Bouassida M, editors, New Prospects in Geotechnical Engineering Aspects of Civil Infrastructures: Proceedings of the 5th GeoChina International Conference 2018 – Civil Infrastructures Confronting Severe Weathers and Climate Changes: From Failure to Sustainability, held on July 23 to 25, 2018 in HangZhou, China. Springer. 2018. p. 127-139. SUCI-D-17-00230. (Sustainable Civil Infrastructures). doi: 10.1007/978-3-319-95771-5_11

A Macro-Element Approach for Non-linear Response of Offshore Skirted Footings

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