Optimization of Shear Bonds of the Grouted Joints of Offshore Wind Turbine Tower Based on Plastic Damage Model
In recent years, offshore wind power has been developing rapidly, and single piles are among the commonly used foundations for wind turbines. Presently, experimental studies of the grouted connections of pile foundations are limited to the study of scaler models. Numerical simulations are more suita...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/10/12/1853 |
| _version_ | 1827638270956142592 |
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| author | Linqing Zhou Weiyuan Sun Yu Cao Chaonan He Xinwei Ma |
| author_facet | Linqing Zhou Weiyuan Sun Yu Cao Chaonan He Xinwei Ma |
| author_sort | Linqing Zhou |
| collection | DOAJ |
| description | In recent years, offshore wind power has been developing rapidly, and single piles are among the commonly used foundations for wind turbines. Presently, experimental studies of the grouted connections of pile foundations are limited to the study of scaler models. Numerical simulations are more suitable for the mechanical analysis of the full-size structure instead of experimental ones. In numerical simulations, the linear elasticity model is widely adopted, but the plastic damage is studied scarcely. So, shear bond parameter research concerning grouted joints needs to be supplemented. In this paper, a bilinear random-motion reinforcement model based on the classical metal plasticity theory is adopted for steel, and the model for the grouting material is based on the Sidiroff energy equivalence principle. The plastic damage model for the grouted connecting section is established; the stresses and deformation distribution of the steel pipes and grout in the connecting section are analyzed using the changed shear bond parameters. The results show that the rectangular and triangular shear bonds are more reasonable than the semicircular shear bond transfer. Increasing the height of the shear bond may reduce the maximum stress and the maximum vertical displacement of the grout, and the shear bond width change has less influence on the joint bond stress and displacement. |
| first_indexed | 2024-03-09T16:15:07Z |
| format | Article |
| id | doaj.art-a4b2803ae758485ab9407d7925e80be5 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-09T16:15:07Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-a4b2803ae758485ab9407d7925e80be52023-11-24T15:55:25ZengMDPI AGJournal of Marine Science and Engineering2077-13122022-12-011012185310.3390/jmse10121853Optimization of Shear Bonds of the Grouted Joints of Offshore Wind Turbine Tower Based on Plastic Damage ModelLinqing Zhou0Weiyuan Sun1Yu Cao2Chaonan He3Xinwei Ma4School of Ocean Engineering, Harbin Institute of Technology, Weihai 264209, ChinaSchool of Ocean Engineering, Harbin Institute of Technology, Weihai 264209, ChinaSchool of Ocean Engineering, Harbin Institute of Technology, Weihai 264209, ChinaSchool of Ocean Engineering, Harbin Institute of Technology, Weihai 264209, ChinaSchool of Ocean Engineering, Harbin Institute of Technology, Weihai 264209, ChinaIn recent years, offshore wind power has been developing rapidly, and single piles are among the commonly used foundations for wind turbines. Presently, experimental studies of the grouted connections of pile foundations are limited to the study of scaler models. Numerical simulations are more suitable for the mechanical analysis of the full-size structure instead of experimental ones. In numerical simulations, the linear elasticity model is widely adopted, but the plastic damage is studied scarcely. So, shear bond parameter research concerning grouted joints needs to be supplemented. In this paper, a bilinear random-motion reinforcement model based on the classical metal plasticity theory is adopted for steel, and the model for the grouting material is based on the Sidiroff energy equivalence principle. The plastic damage model for the grouted connecting section is established; the stresses and deformation distribution of the steel pipes and grout in the connecting section are analyzed using the changed shear bond parameters. The results show that the rectangular and triangular shear bonds are more reasonable than the semicircular shear bond transfer. Increasing the height of the shear bond may reduce the maximum stress and the maximum vertical displacement of the grout, and the shear bond width change has less influence on the joint bond stress and displacement.https://www.mdpi.com/2077-1312/10/12/1853offshore wind powergrouting connection sectionshear bondplastic damage |
| spellingShingle | Linqing Zhou Weiyuan Sun Yu Cao Chaonan He Xinwei Ma Optimization of Shear Bonds of the Grouted Joints of Offshore Wind Turbine Tower Based on Plastic Damage Model Journal of Marine Science and Engineering offshore wind power grouting connection section shear bond plastic damage |
| title | Optimization of Shear Bonds of the Grouted Joints of Offshore Wind Turbine Tower Based on Plastic Damage Model |
| title_full | Optimization of Shear Bonds of the Grouted Joints of Offshore Wind Turbine Tower Based on Plastic Damage Model |
| title_fullStr | Optimization of Shear Bonds of the Grouted Joints of Offshore Wind Turbine Tower Based on Plastic Damage Model |
| title_full_unstemmed | Optimization of Shear Bonds of the Grouted Joints of Offshore Wind Turbine Tower Based on Plastic Damage Model |
| title_short | Optimization of Shear Bonds of the Grouted Joints of Offshore Wind Turbine Tower Based on Plastic Damage Model |
| title_sort | optimization of shear bonds of the grouted joints of offshore wind turbine tower based on plastic damage model |
| topic | offshore wind power grouting connection section shear bond plastic damage |
| url | https://www.mdpi.com/2077-1312/10/12/1853 |
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