Application of Unified Hardening Model in Soil-Pile Analysis of Offshore Wind Power Large-Diameter Monopiles
[Introduction] In order to facilitate the design optimisation of foundation for offshore wind turbines, it is necessary to promote application of advanced geotechnical constitutive models that are theoretically sound and capable of modelling realistic soil behaviours in real engineering scenarios. [...
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| Format: | Article |
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Energy Observer Magazine Co., Ltd.
2024-03-01
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| Series: | 南方能源建设 |
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| Online Access: | https://www.energychina.press/en/article/doi/10.16516/j.ceec.2024.2.07 |
| _version_ | 1797219335969701888 |
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| author | Zhaorong MA Zhentao LIU Jinxi WANG Youhu ZHANG |
| author_facet | Zhaorong MA Zhentao LIU Jinxi WANG Youhu ZHANG |
| author_sort | Zhaorong MA |
| collection | DOAJ |
| description | [Introduction] In order to facilitate the design optimisation of foundation for offshore wind turbines, it is necessary to promote application of advanced geotechnical constitutive models that are theoretically sound and capable of modelling realistic soil behaviours in real engineering scenarios. [Method] Firstly, the theoretical framework of the Unified Hardening model (UH model), an advanced constitutive model, was introduced. Then, further modifications oriented to requirements in real engineering applications were presented. Finally, the modified model was applied to the pile-soil analysis of large-diameter monopoles, and the results were analyzed at the macroscopic and element level to verify its effectiveness and practicability. [Result] The UH_G0 model obtained through modification and verification is applicable to addressing issues in real engineering practices. The parameter "initial void ratio" in the original UH model is replaced by "overconsolidation ratio". By incorporating the Andersen empirical formula, the shear modulus is decoupled from the constitutive parameter κ, significantly improving the initial shear stiffness of the original UH model, and thus allowing the UH model to be applicable to the deformation (stiffness) sensitive boundary value problems. [Conclusion] As an advanced constitutive model with a well-defined theoretical framework and physically meaningful parameters, the UH model demonstrates high potential for practical engineering applications. The two modifications tailored to engineering design requirements are necessary, which improve the convenience in application of the UH model to address boundary value problems and the accuracy in calculating initial stiffness, respectively. The modified UH_G0 model is proven to be effective and practical for solving practical engineering problems in the process of finite element simulation. |
| first_indexed | 2024-04-24T12:32:01Z |
| format | Article |
| id | doaj.art-a7d7902f133249c2aaa8298a4529458e |
| institution | Directory Open Access Journal |
| issn | 2095-8676 |
| language | English |
| last_indexed | 2024-04-24T12:32:01Z |
| publishDate | 2024-03-01 |
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| record_format | Article |
| series | 南方能源建设 |
| spelling | doaj.art-a7d7902f133249c2aaa8298a4529458e2024-04-08T02:35:06ZengEnergy Observer Magazine Co., Ltd.南方能源建设2095-86762024-03-01112688110.16516/j.ceec.2024.2.072023-126Application of Unified Hardening Model in Soil-Pile Analysis of Offshore Wind Power Large-Diameter MonopilesZhaorong MA0Zhentao LIU1Jinxi WANG2Youhu ZHANG3China Energy Engineering Group Guangdong Electric Power Design Institute Co., Ltd., Guangzhou 510663, Guangdong, ChinaSchool of Civil Engineering, Southeast University, Nanjing 211189, Jiangsu, ChinaChina Energy Engineering Group Guangdong Electric Power Design Institute Co., Ltd., Guangzhou 510663, Guangdong, ChinaSchool of Civil Engineering, Southeast University, Nanjing 211189, Jiangsu, China[Introduction] In order to facilitate the design optimisation of foundation for offshore wind turbines, it is necessary to promote application of advanced geotechnical constitutive models that are theoretically sound and capable of modelling realistic soil behaviours in real engineering scenarios. [Method] Firstly, the theoretical framework of the Unified Hardening model (UH model), an advanced constitutive model, was introduced. Then, further modifications oriented to requirements in real engineering applications were presented. Finally, the modified model was applied to the pile-soil analysis of large-diameter monopoles, and the results were analyzed at the macroscopic and element level to verify its effectiveness and practicability. [Result] The UH_G0 model obtained through modification and verification is applicable to addressing issues in real engineering practices. The parameter "initial void ratio" in the original UH model is replaced by "overconsolidation ratio". By incorporating the Andersen empirical formula, the shear modulus is decoupled from the constitutive parameter κ, significantly improving the initial shear stiffness of the original UH model, and thus allowing the UH model to be applicable to the deformation (stiffness) sensitive boundary value problems. [Conclusion] As an advanced constitutive model with a well-defined theoretical framework and physically meaningful parameters, the UH model demonstrates high potential for practical engineering applications. The two modifications tailored to engineering design requirements are necessary, which improve the convenience in application of the UH model to address boundary value problems and the accuracy in calculating initial stiffness, respectively. The modified UH_G0 model is proven to be effective and practical for solving practical engineering problems in the process of finite element simulation.https://www.energychina.press/en/article/doi/10.16516/j.ceec.2024.2.07offshore wind powerunified hardening modellarge-diameter monopile foundationsoil-pile analysis |
| spellingShingle | Zhaorong MA Zhentao LIU Jinxi WANG Youhu ZHANG Application of Unified Hardening Model in Soil-Pile Analysis of Offshore Wind Power Large-Diameter Monopiles 南方能源建设 offshore wind power unified hardening model large-diameter monopile foundation soil-pile analysis |
| title | Application of Unified Hardening Model in Soil-Pile Analysis of Offshore Wind Power Large-Diameter Monopiles |
| title_full | Application of Unified Hardening Model in Soil-Pile Analysis of Offshore Wind Power Large-Diameter Monopiles |
| title_fullStr | Application of Unified Hardening Model in Soil-Pile Analysis of Offshore Wind Power Large-Diameter Monopiles |
| title_full_unstemmed | Application of Unified Hardening Model in Soil-Pile Analysis of Offshore Wind Power Large-Diameter Monopiles |
| title_short | Application of Unified Hardening Model in Soil-Pile Analysis of Offshore Wind Power Large-Diameter Monopiles |
| title_sort | application of unified hardening model in soil pile analysis of offshore wind power large diameter monopiles |
| topic | offshore wind power unified hardening model large-diameter monopile foundation soil-pile analysis |
| url | https://www.energychina.press/en/article/doi/10.16516/j.ceec.2024.2.07 |
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