Analysis of Offshore Structures Based on Response Spectrum of Ice Force
With the development of large-scale offshore projects, sea ice is a potential threat to the safety of offshore structures. The main forms of damage to bottom-fixed offshore structures under sea ice are crushing failure and bending failure. Referred to as the concept of seismic response spectrums, th...
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ftmdpi:oai:mdpi.com:/2077-1312/7/11/417/ 2023-08-20T04:09:42+02:00 Analysis of Offshore Structures Based on Response Spectrum of Ice Force Yingzhou Liu Xin Li Youwei Zhang agris 2019-11-14 application/pdf https://doi.org/10.3390/jmse7110417 EN eng Multidisciplinary Digital Publishing Institute Ocean Engineering https://dx.doi.org/10.3390/jmse7110417 https://creativecommons.org/licenses/by/4.0/ Journal of Marine Science and Engineering; Volume 7; Issue 11; Pages: 417 ice force design response spectrum crushing failure bending failure Text 2019 ftmdpi https://doi.org/10.3390/jmse7110417 2023-07-31T22:47:42Z With the development of large-scale offshore projects, sea ice is a potential threat to the safety of offshore structures. The main forms of damage to bottom-fixed offshore structures under sea ice are crushing failure and bending failure. Referred to as the concept of seismic response spectrums, the design response spectrum of offshore structures induced by the crushing and bending ice failure is presented. Selecting the Bohai Sea in China as an example, the sea areas were divided into different ice zones due to the different sea ice parameters. Based on the crushing and bending failure power spectral densities of ice force, a large amount of ice force time-history samples are firstly generated for each ice zone. The time-history of the maximum responses of a series of single degree of freedom systems with different natural frequencies under the ice force are calculated and subsequently, a response spectrum curve is obtained. Finally, by fitting all the response spectrum curves from different samples, the design response spectrum is generated for each ice zone. The ice force influence coefficients for crushing and bending failure are obtained, which can be used to estimate the stochastic sea ice force acting on a structure conveniently in a static way. A comparison of the proposed response spectrum method with the Monte Carlo method by a numerical example shows good agreement. Text Sea ice MDPI Open Access Publishing Journal of Marine Science and Engineering 7 11 417 |
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MDPI Open Access Publishing |
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English |
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ice force design response spectrum crushing failure bending failure |
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ice force design response spectrum crushing failure bending failure Yingzhou Liu Xin Li Youwei Zhang Analysis of Offshore Structures Based on Response Spectrum of Ice Force |
topic_facet |
ice force design response spectrum crushing failure bending failure |
description |
With the development of large-scale offshore projects, sea ice is a potential threat to the safety of offshore structures. The main forms of damage to bottom-fixed offshore structures under sea ice are crushing failure and bending failure. Referred to as the concept of seismic response spectrums, the design response spectrum of offshore structures induced by the crushing and bending ice failure is presented. Selecting the Bohai Sea in China as an example, the sea areas were divided into different ice zones due to the different sea ice parameters. Based on the crushing and bending failure power spectral densities of ice force, a large amount of ice force time-history samples are firstly generated for each ice zone. The time-history of the maximum responses of a series of single degree of freedom systems with different natural frequencies under the ice force are calculated and subsequently, a response spectrum curve is obtained. Finally, by fitting all the response spectrum curves from different samples, the design response spectrum is generated for each ice zone. The ice force influence coefficients for crushing and bending failure are obtained, which can be used to estimate the stochastic sea ice force acting on a structure conveniently in a static way. A comparison of the proposed response spectrum method with the Monte Carlo method by a numerical example shows good agreement. |
format |
Text |
author |
Yingzhou Liu Xin Li Youwei Zhang |
author_facet |
Yingzhou Liu Xin Li Youwei Zhang |
author_sort |
Yingzhou Liu |
title |
Analysis of Offshore Structures Based on Response Spectrum of Ice Force |
title_short |
Analysis of Offshore Structures Based on Response Spectrum of Ice Force |
title_full |
Analysis of Offshore Structures Based on Response Spectrum of Ice Force |
title_fullStr |
Analysis of Offshore Structures Based on Response Spectrum of Ice Force |
title_full_unstemmed |
Analysis of Offshore Structures Based on Response Spectrum of Ice Force |
title_sort |
analysis of offshore structures based on response spectrum of ice force |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2019 |
url |
https://doi.org/10.3390/jmse7110417 |
op_coverage |
agris |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Journal of Marine Science and Engineering; Volume 7; Issue 11; Pages: 417 |
op_relation |
Ocean Engineering https://dx.doi.org/10.3390/jmse7110417 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/jmse7110417 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
7 |
container_issue |
11 |
container_start_page |
417 |
_version_ |
1774723341550092288 |