Ultimate and residual strength assessments of intact and collision damaged columns of the Bjørnafjorden floating bridge

Zhaolong Yu; Xintong Wang; Torgeir Moan; Jørgen Amdahl; Yanyan Sha

doi:10.1201/9781003462170-47

Ultimate and residual strength assessments of intact and collision damaged columns of the Bjørnafjorden floating bridge

Zhaolong Yu, Xintong Wang, Torgeir Moan, Jørgen Amdahl, Yanyan Sha

Naval Architecture, Ocean And Marine Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

Abstract

The Norwegian Public Road Administration (NPRA) has initiated an ambitious project to replace the current ferry crossing solutions with floating bridges over the wide and deep Norwegian fjords. This will substantially reduce the travelling time among major cities in Norway. It is found that ship collisions represent major critical loads to the safety and integrity of floating bridges that governs the structural design. This paper investigates the ultimate and residual strength of columns in an initial design of the Bjørnafjorden floating bridge before and after ship collisions with an initial kinetic energy of 125 MJ and 150 MJ respectively corresponding to a 10,000-year event as estimated from risk assessment. The ultimate bending and torsional capacities are assessed. Three different approaches are adopted, (1) the nonlinear finite element method using LS-DYNA; (2) A semi-analytical code PULS based on energy methods; (3) DNV rules-based formulations. The results are compared and discussed.

Original language	English
Title of host publication	Advances in the Collision and Grounding of Ships and Offshore Structures
Subtitle of host publication	Proceedings of the 9th International Conference on Collision and Grounding of Ships and Offshore Structures (Iccgs 2023), Nantes, France, 11-13 September 2023
Editors	H. Le Sourne, C. Guedes Soares
Place of Publication	Abingdon, Oxon
Pages	387-393
Number of pages	7
ISBN (Electronic)	9781003462170
DOIs	https://doi.org/10.1201/9781003462170-47
Publication status	Published - 11 Sept 2024
Event	9th International Conference on Collision and Grounding of Ships and Offshore Structures, ICCGS 2023 - Nantes, France Duration: 11 Sept 2023 → 13 Sept 2023

Conference

Conference	9th International Conference on Collision and Grounding of Ships and Offshore Structures, ICCGS 2023
Country/Territory	France
City	Nantes
Period	11/09/23 → 13/09/23

Keywords

strength assessments
floating bridge
collision damage

Access to Document

10.1201/9781003462170-47

Cite this

Yu, Z., Wang, X., Moan, T., Amdahl, J., & Sha, Y. (2024). Ultimate and residual strength assessments of intact and collision damaged columns of the Bjørnafjorden floating bridge. In H. Le Sourne, & C. G. Soares (Eds.), Advances in the Collision and Grounding of Ships and Offshore Structures: Proceedings of the 9th International Conference on Collision and Grounding of Ships and Offshore Structures (Iccgs 2023), Nantes, France, 11-13 September 2023 (pp. 387-393). https://doi.org/10.1201/9781003462170-47

Yu, Zhaolong ; Wang, Xintong ; Moan, Torgeir et al. / Ultimate and residual strength assessments of intact and collision damaged columns of the Bjørnafjorden floating bridge. Advances in the Collision and Grounding of Ships and Offshore Structures: Proceedings of the 9th International Conference on Collision and Grounding of Ships and Offshore Structures (Iccgs 2023), Nantes, France, 11-13 September 2023. editor / H. Le Sourne ; C. Guedes Soares. Abingdon, Oxon, 2024. pp. 387-393

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abstract = "The Norwegian Public Road Administration (NPRA) has initiated an ambitious project to replace the current ferry crossing solutions with floating bridges over the wide and deep Norwegian fjords. This will substantially reduce the travelling time among major cities in Norway. It is found that ship collisions represent major critical loads to the safety and integrity of floating bridges that governs the structural design. This paper investigates the ultimate and residual strength of columns in an initial design of the Bj{\o}rnafjorden floating bridge before and after ship collisions with an initial kinetic energy of 125 MJ and 150 MJ respectively corresponding to a 10,000-year event as estimated from risk assessment. The ultimate bending and torsional capacities are assessed. Three different approaches are adopted, (1) the nonlinear finite element method using LS-DYNA; (2) A semi-analytical code PULS based on energy methods; (3) DNV rules-based formulations. The results are compared and discussed.",

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Yu, Z, Wang, X, Moan, T, Amdahl, J & Sha, Y 2024, Ultimate and residual strength assessments of intact and collision damaged columns of the Bjørnafjorden floating bridge. in H Le Sourne & CG Soares (eds), Advances in the Collision and Grounding of Ships and Offshore Structures: Proceedings of the 9th International Conference on Collision and Grounding of Ships and Offshore Structures (Iccgs 2023), Nantes, France, 11-13 September 2023. Abingdon, Oxon, pp. 387-393, 9th International Conference on Collision and Grounding of Ships and Offshore Structures, ICCGS 2023, Nantes, France, 11/09/23. https://doi.org/10.1201/9781003462170-47

Ultimate and residual strength assessments of intact and collision damaged columns of the Bjørnafjorden floating bridge. / Yu, Zhaolong; Wang, Xintong; Moan, Torgeir et al.
Advances in the Collision and Grounding of Ships and Offshore Structures: Proceedings of the 9th International Conference on Collision and Grounding of Ships and Offshore Structures (Iccgs 2023), Nantes, France, 11-13 September 2023. ed. / H. Le Sourne; C. Guedes Soares. Abingdon, Oxon, 2024. p. 387-393.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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AU - Moan, Torgeir

AU - Amdahl, Jørgen

AU - Sha, Yanyan

PY - 2024/9/11

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N2 - The Norwegian Public Road Administration (NPRA) has initiated an ambitious project to replace the current ferry crossing solutions with floating bridges over the wide and deep Norwegian fjords. This will substantially reduce the travelling time among major cities in Norway. It is found that ship collisions represent major critical loads to the safety and integrity of floating bridges that governs the structural design. This paper investigates the ultimate and residual strength of columns in an initial design of the Bjørnafjorden floating bridge before and after ship collisions with an initial kinetic energy of 125 MJ and 150 MJ respectively corresponding to a 10,000-year event as estimated from risk assessment. The ultimate bending and torsional capacities are assessed. Three different approaches are adopted, (1) the nonlinear finite element method using LS-DYNA; (2) A semi-analytical code PULS based on energy methods; (3) DNV rules-based formulations. The results are compared and discussed.

AB - The Norwegian Public Road Administration (NPRA) has initiated an ambitious project to replace the current ferry crossing solutions with floating bridges over the wide and deep Norwegian fjords. This will substantially reduce the travelling time among major cities in Norway. It is found that ship collisions represent major critical loads to the safety and integrity of floating bridges that governs the structural design. This paper investigates the ultimate and residual strength of columns in an initial design of the Bjørnafjorden floating bridge before and after ship collisions with an initial kinetic energy of 125 MJ and 150 MJ respectively corresponding to a 10,000-year event as estimated from risk assessment. The ultimate bending and torsional capacities are assessed. Three different approaches are adopted, (1) the nonlinear finite element method using LS-DYNA; (2) A semi-analytical code PULS based on energy methods; (3) DNV rules-based formulations. The results are compared and discussed.

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BT - Advances in the Collision and Grounding of Ships and Offshore Structures

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ER -

Yu Z, Wang X, Moan T, Amdahl J, Sha Y. Ultimate and residual strength assessments of intact and collision damaged columns of the Bjørnafjorden floating bridge. In Le Sourne H, Soares CG, editors, Advances in the Collision and Grounding of Ships and Offshore Structures: Proceedings of the 9th International Conference on Collision and Grounding of Ships and Offshore Structures (Iccgs 2023), Nantes, France, 11-13 September 2023. Abingdon, Oxon. 2024. p. 387-393 doi: 10.1201/9781003462170-47

Ultimate and residual strength assessments of intact and collision damaged columns of the Bjørnafjorden floating bridge

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