Response of Cyclic-Loaded Bucket Foundations in Saturated Dense Sand
AbstractOne of the major concerns of designing offshore wind turbine foundations is to address the effects of cyclic loading coming from, especially, wave loading. This paper describes the results from a test series on a small-scale mono bucket foundation installed in water-saturated dense sand expo...
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Veröffentlicht in: | Journal of geotechnical and geoenvironmental engineering 2017-11, Vol.143 (11) |
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description | AbstractOne of the major concerns of designing offshore wind turbine foundations is to address the effects of cyclic loading coming from, especially, wave loading. This paper describes the results from a test series on a small-scale mono bucket foundation installed in water-saturated dense sand exposed to cyclic loading with 1.0 Hz. A macro model has been calibrated to fit the test results, and it has been shown that the load frequency has a major influence of the measured rotation of the foundation. Compared to previous tests, the presented test program has been conducted under partly drained conditions due to a higher load frequency, and in addition the foundations have been preloaded by cyclic loads simulating small wave impacts prior to major storm events. The calibrated model shows, in contradiction to previous findings for drained conditions, that two-way loading leads to the largest rotations of the foundation. The reason for this is the partly drained or undrained soil response during testing. The paper also presents a cyclic load response diagram, which is a tool to be used in a predesign of a mono bucket foundation. The diagram gives the designer a quick overview of the cyclic load response and the effect of increasing or decreasing the foundation size. |
doi_str_mv | 10.1061/(ASCE)GT.1943-5606.0001787 |
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This paper describes the results from a test series on a small-scale mono bucket foundation installed in water-saturated dense sand exposed to cyclic loading with 1.0 Hz. A macro model has been calibrated to fit the test results, and it has been shown that the load frequency has a major influence of the measured rotation of the foundation. Compared to previous tests, the presented test program has been conducted under partly drained conditions due to a higher load frequency, and in addition the foundations have been preloaded by cyclic loads simulating small wave impacts prior to major storm events. The calibrated model shows, in contradiction to previous findings for drained conditions, that two-way loading leads to the largest rotations of the foundation. The reason for this is the partly drained or undrained soil response during testing. The paper also presents a cyclic load response diagram, which is a tool to be used in a predesign of a mono bucket foundation. The diagram gives the designer a quick overview of the cyclic load response and the effect of increasing or decreasing the foundation size.</description><identifier>ISSN: 1090-0241</identifier><identifier>EISSN: 1943-5606</identifier><identifier>DOI: 10.1061/(ASCE)GT.1943-5606.0001787</identifier><language>eng</language><publisher>New York: American Society of Civil Engineers</publisher><subject>Computer simulation ; Cyclic loading ; Cyclic loads ; Load ; Offshore ; Offshore operations ; Sand ; Soil ; Storms ; Technical Papers ; Turbine engines ; Wave forces</subject><ispartof>Journal of geotechnical and geoenvironmental engineering, 2017-11, Vol.143 (11)</ispartof><rights>2017 American Society of Civil Engineers</rights><rights>Copyright American Society of Civil Engineers Nov 2017</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a337t-d5b87c234c130f95a82e1b5a1aa9df848520d589419e4a1bc6aed88646d0d5fe3</citedby><cites>FETCH-LOGICAL-a337t-d5b87c234c130f95a82e1b5a1aa9df848520d589419e4a1bc6aed88646d0d5fe3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttp://ascelibrary.org/doi/pdf/10.1061/(ASCE)GT.1943-5606.0001787$$EPDF$$P50$$Gasce$$H</linktopdf><linktohtml>$$Uhttp://ascelibrary.org/doi/abs/10.1061/(ASCE)GT.1943-5606.0001787$$EHTML$$P50$$Gasce$$H</linktohtml><link.rule.ids>315,781,785,27929,27930,76198,76206</link.rule.ids></links><search><creatorcontrib>Nielsen, Søren Dam</creatorcontrib><creatorcontrib>Ibsen, Lars Bo</creatorcontrib><creatorcontrib>Nielsen, Benjaminn Nordahl</creatorcontrib><title>Response of Cyclic-Loaded Bucket Foundations in Saturated Dense Sand</title><title>Journal of geotechnical and geoenvironmental engineering</title><description>AbstractOne of the major concerns of designing offshore wind turbine foundations is to address the effects of cyclic loading coming from, especially, wave loading. This paper describes the results from a test series on a small-scale mono bucket foundation installed in water-saturated dense sand exposed to cyclic loading with 1.0 Hz. A macro model has been calibrated to fit the test results, and it has been shown that the load frequency has a major influence of the measured rotation of the foundation. Compared to previous tests, the presented test program has been conducted under partly drained conditions due to a higher load frequency, and in addition the foundations have been preloaded by cyclic loads simulating small wave impacts prior to major storm events. The calibrated model shows, in contradiction to previous findings for drained conditions, that two-way loading leads to the largest rotations of the foundation. The reason for this is the partly drained or undrained soil response during testing. The paper also presents a cyclic load response diagram, which is a tool to be used in a predesign of a mono bucket foundation. The diagram gives the designer a quick overview of the cyclic load response and the effect of increasing or decreasing the foundation size.</description><subject>Computer simulation</subject><subject>Cyclic loading</subject><subject>Cyclic loads</subject><subject>Load</subject><subject>Offshore</subject><subject>Offshore operations</subject><subject>Sand</subject><subject>Soil</subject><subject>Storms</subject><subject>Technical Papers</subject><subject>Turbine engines</subject><subject>Wave forces</subject><issn>1090-0241</issn><issn>1943-5606</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp1kE1PwzAMhiMEEmPwHyq4wKEjadI04Ta6D5AqIbFxjrwklTpGM5L2sH9Pqk2ICydb9vvY0oPQLcETgjl5vJ-uyvnDcj0hktE055hPMMakEMUZGv3OzmOPJU5xxsglugphG0MMi2yEZu827F0bbOLqpDzoXaPTyoGxJnnu9aftkoXrWwNdE0NJ0yYr6HoPXdzP7ICtoDXX6KKGXbA3pzpGH4v5unxJq7flazmtUqC06FKTb0ShM8o0obiWOYjMkk0OBECaWjCRZ9jkQjIiLQOy0RysEYIzbuK8tnSM7o5399599zZ0aut638aXisgC08hTHlNPx5T2LgRva7X3zRf4gyJYDdaUGqyp5VoNhtRgSJ2sRZgfYQja_jl_Iv8HfwCQEHAH</recordid><startdate>20171101</startdate><enddate>20171101</enddate><creator>Nielsen, Søren Dam</creator><creator>Ibsen, Lars Bo</creator><creator>Nielsen, Benjaminn Nordahl</creator><general>American Society of Civil Engineers</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>KR7</scope><scope>L.G</scope><scope>SOI</scope></search><sort><creationdate>20171101</creationdate><title>Response of Cyclic-Loaded Bucket Foundations in Saturated Dense Sand</title><author>Nielsen, Søren Dam ; Ibsen, Lars Bo ; Nielsen, Benjaminn Nordahl</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a337t-d5b87c234c130f95a82e1b5a1aa9df848520d589419e4a1bc6aed88646d0d5fe3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Computer simulation</topic><topic>Cyclic loading</topic><topic>Cyclic loads</topic><topic>Load</topic><topic>Offshore</topic><topic>Offshore operations</topic><topic>Sand</topic><topic>Soil</topic><topic>Storms</topic><topic>Technical Papers</topic><topic>Turbine engines</topic><topic>Wave forces</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nielsen, Søren Dam</creatorcontrib><creatorcontrib>Ibsen, Lars Bo</creatorcontrib><creatorcontrib>Nielsen, Benjaminn Nordahl</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><jtitle>Journal of geotechnical and geoenvironmental engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nielsen, Søren Dam</au><au>Ibsen, Lars Bo</au><au>Nielsen, Benjaminn Nordahl</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Response of Cyclic-Loaded Bucket Foundations in Saturated Dense Sand</atitle><jtitle>Journal of geotechnical and geoenvironmental engineering</jtitle><date>2017-11-01</date><risdate>2017</risdate><volume>143</volume><issue>11</issue><issn>1090-0241</issn><eissn>1943-5606</eissn><abstract>AbstractOne of the major concerns of designing offshore wind turbine foundations is to address the effects of cyclic loading coming from, especially, wave loading. This paper describes the results from a test series on a small-scale mono bucket foundation installed in water-saturated dense sand exposed to cyclic loading with 1.0 Hz. A macro model has been calibrated to fit the test results, and it has been shown that the load frequency has a major influence of the measured rotation of the foundation. Compared to previous tests, the presented test program has been conducted under partly drained conditions due to a higher load frequency, and in addition the foundations have been preloaded by cyclic loads simulating small wave impacts prior to major storm events. The calibrated model shows, in contradiction to previous findings for drained conditions, that two-way loading leads to the largest rotations of the foundation. The reason for this is the partly drained or undrained soil response during testing. The paper also presents a cyclic load response diagram, which is a tool to be used in a predesign of a mono bucket foundation. The diagram gives the designer a quick overview of the cyclic load response and the effect of increasing or decreasing the foundation size.</abstract><cop>New York</cop><pub>American Society of Civil Engineers</pub><doi>10.1061/(ASCE)GT.1943-5606.0001787</doi></addata></record> |
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source | American Society of Civil Engineers:NESLI2:Journals:2014 |
subjects | Computer simulation Cyclic loading Cyclic loads Load Offshore Offshore operations Sand Soil Storms Technical Papers Turbine engines Wave forces |
title | Response of Cyclic-Loaded Bucket Foundations in Saturated Dense Sand |
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