Analytical Model and Optimization of Joint Systems in Modular Precast Foundations for Onshore Wind Turbines
This study presents a comprehensive design and calculation methodology for prefabricated expansion foundations of onshore wind turbines, addressing the critical need for modular construction while ensuring structural integrity. The proposed approach encompasses both overall structural performance ve...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-12-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/14/12/3952 |
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| author | Dongliang Zhang Wantong Liu Kun Fu Fei Wang Xiangguo Wu Chu Zhao Chao Shen Zhiqiang Yu Yunchao Tang |
| author_facet | Dongliang Zhang Wantong Liu Kun Fu Fei Wang Xiangguo Wu Chu Zhao Chao Shen Zhiqiang Yu Yunchao Tang |
| author_sort | Dongliang Zhang |
| collection | DOAJ |
| description | This study presents a comprehensive design and calculation methodology for prefabricated expansion foundations of onshore wind turbines, addressing the critical need for modular construction while ensuring structural integrity. The proposed approach encompasses both overall structural performance verification and connection joint design, considering the stiffness reduction effects of modularization. A novel punching shear capacity checking method is developed specifically for assembled expansion foundations, incorporating joint weakening factors. The research establishes equilibrium equations and verification formulas for splice joints under different loading conditions, demonstrating that the shear amplification factor at joints varies with local compressive stress. The analytical results demonstrate several key findings: (1) the derived maximum joint shear formula shows excellent agreement with finite element results across various load conditions (R<sup>2</sup> = 0.99906); (2) the optimized shear key configuration increases the joint’s load-bearing capacity by 35% compared to conventional designs; and (3) the developed Python-based calculation system reduces the design time by 60% while maintaining accuracy within 5% of detailed FEM analysis. These quantitative outcomes validate the effectiveness of the proposed methodology and provide practical guidelines for implementing modular construction in wind energy infrastructure. |
| format | Article |
| id | doaj-art-88b98b8078f341b58b811319c4e58d48 |
| institution | DOAJ |
| issn | 2075-5309 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-88b98b8078f341b58b811319c4e58d482025-08-20T02:55:44ZengMDPI AGBuildings2075-53092024-12-011412395210.3390/buildings14123952Analytical Model and Optimization of Joint Systems in Modular Precast Foundations for Onshore Wind TurbinesDongliang Zhang0Wantong Liu1Kun Fu2Fei Wang3Xiangguo Wu4Chu Zhao5Chao Shen6Zhiqiang Yu7Yunchao Tang8PowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, ChinaPowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, ChinaPowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, ChinaCollege of Civil Engineering, Fuzhou University, Fuzhou 350108, ChinaPowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, ChinaGuangdong Provincial Key Laboratory of Intelligent Disaster Prevention and Emergency Technologies for Urban Lifeline Engineering, Dongguan University of Technology, Dongguan 523000, ChinaGuangdong Provincial Key Laboratory of Intelligent Disaster Prevention and Emergency Technologies for Urban Lifeline Engineering, Dongguan University of Technology, Dongguan 523000, ChinaThis study presents a comprehensive design and calculation methodology for prefabricated expansion foundations of onshore wind turbines, addressing the critical need for modular construction while ensuring structural integrity. The proposed approach encompasses both overall structural performance verification and connection joint design, considering the stiffness reduction effects of modularization. A novel punching shear capacity checking method is developed specifically for assembled expansion foundations, incorporating joint weakening factors. The research establishes equilibrium equations and verification formulas for splice joints under different loading conditions, demonstrating that the shear amplification factor at joints varies with local compressive stress. The analytical results demonstrate several key findings: (1) the derived maximum joint shear formula shows excellent agreement with finite element results across various load conditions (R<sup>2</sup> = 0.99906); (2) the optimized shear key configuration increases the joint’s load-bearing capacity by 35% compared to conventional designs; and (3) the developed Python-based calculation system reduces the design time by 60% while maintaining accuracy within 5% of detailed FEM analysis. These quantitative outcomes validate the effectiveness of the proposed methodology and provide practical guidelines for implementing modular construction in wind energy infrastructure.https://www.mdpi.com/2075-5309/14/12/3952key tooth dry jointassembly typewind tower foundationperformance study |
| spellingShingle | Dongliang Zhang Wantong Liu Kun Fu Fei Wang Xiangguo Wu Chu Zhao Chao Shen Zhiqiang Yu Yunchao Tang Analytical Model and Optimization of Joint Systems in Modular Precast Foundations for Onshore Wind Turbines Buildings key tooth dry joint assembly type wind tower foundation performance study |
| title | Analytical Model and Optimization of Joint Systems in Modular Precast Foundations for Onshore Wind Turbines |
| title_full | Analytical Model and Optimization of Joint Systems in Modular Precast Foundations for Onshore Wind Turbines |
| title_fullStr | Analytical Model and Optimization of Joint Systems in Modular Precast Foundations for Onshore Wind Turbines |
| title_full_unstemmed | Analytical Model and Optimization of Joint Systems in Modular Precast Foundations for Onshore Wind Turbines |
| title_short | Analytical Model and Optimization of Joint Systems in Modular Precast Foundations for Onshore Wind Turbines |
| title_sort | analytical model and optimization of joint systems in modular precast foundations for onshore wind turbines |
| topic | key tooth dry joint assembly type wind tower foundation performance study |
| url | https://www.mdpi.com/2075-5309/14/12/3952 |
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