Analysis of the Influence of Bearing Plate Position on the Uplift Bearing Capacity of Low-Header CEP Single-Pile Foundations
This study investigates the impact of the bearing plate position on the uplift bearing capacity of low-header concrete expanded pile (CEP) foundations using the ANSYS finite element simulation method. Nine models of low-header CEP single piles with varying bearing plate positions are constructed. In...
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MDPI AG
2025-04-01
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| author | Yongmei Qian Deshun Qi Yu Mou Xihui Wang Ziyu Wang Lin Sun Zhongwei Ma |
| author_facet | Yongmei Qian Deshun Qi Yu Mou Xihui Wang Ziyu Wang Lin Sun Zhongwei Ma |
| author_sort | Yongmei Qian |
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| description | This study investigates the impact of the bearing plate position on the uplift bearing capacity of low-header concrete expanded pile (CEP) foundations using the ANSYS finite element simulation method. Nine models of low-header CEP single piles with varying bearing plate positions are constructed. Incremental loading is applied to obtain relevant data, including load–displacement curves for vertical tensile forces, displacement contours, and shear stress distributions. The study analyzes the characteristics of load–displacement curves under different loading conditions, the axial force distribution along the pile shaft, the failure state of the surrounding soil, and how the uplift bearing capacity varies with changes in the bearing plate position. Based on the findings, a calculation model for the uplift bearing capacity of low-header CEP single-pile foundations is proposed. Given that the uplift bearing capacity decreases to varying degrees depending on the bearing plate position, the slip-line theory from previous studies is applied to refine the corresponding calculation formula for uplift bearing capacity. The results from the ANSYS finite element simulation confirm that the bearing plate position significantly influences the uplift bearing performance of low-header CEP single-pile foundations. The uplift bearing capacity increases with the distance between the bearing plate and the low header, reaching a peak before decreasing beyond a certain threshold. Considering the influence of the bearing plate position on bearing capacity, the affected area of soil beneath the foundation, and the time required for the system to enter its working state, the optimal bearing plate position is found to be at a distance of d<sub>1</sub> = 4R<sub>0</sub> to 5R<sub>0</sub> from the top of the pile. |
| format | Article |
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| issn | 2075-5309 |
| language | English |
| publishDate | 2025-04-01 |
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| series | Buildings |
| spelling | doaj-art-2e963aed51d444388037fb9f16c265332025-08-20T02:17:20ZengMDPI AGBuildings2075-53092025-04-01158135310.3390/buildings15081353Analysis of the Influence of Bearing Plate Position on the Uplift Bearing Capacity of Low-Header CEP Single-Pile FoundationsYongmei Qian0Deshun Qi1Yu Mou2Xihui Wang3Ziyu Wang4Lin Sun5Zhongwei Ma6College of Civil Engineering, Jilin Jianzhu University, Changchun 130118, ChinaCollege of Civil Engineering, Jilin Jianzhu University, Changchun 130118, ChinaChina Construction Fifth Engineering Division Corp., Ltd., Changsha 410004, ChinaKey Laboratory of Vibration Control for Key Process Equipment of Major Scientific Infrastructure in the Machinery Industry, Beijing 100080, ChinaCollege of Civil Engineering, Jilin Jianzhu University, Changchun 130118, ChinaCollege of Civil Engineering, Jilin Jianzhu University, Changchun 130118, ChinaChina Construction Fifth Engineering Division Corp., Ltd., Changsha 410004, ChinaThis study investigates the impact of the bearing plate position on the uplift bearing capacity of low-header concrete expanded pile (CEP) foundations using the ANSYS finite element simulation method. Nine models of low-header CEP single piles with varying bearing plate positions are constructed. Incremental loading is applied to obtain relevant data, including load–displacement curves for vertical tensile forces, displacement contours, and shear stress distributions. The study analyzes the characteristics of load–displacement curves under different loading conditions, the axial force distribution along the pile shaft, the failure state of the surrounding soil, and how the uplift bearing capacity varies with changes in the bearing plate position. Based on the findings, a calculation model for the uplift bearing capacity of low-header CEP single-pile foundations is proposed. Given that the uplift bearing capacity decreases to varying degrees depending on the bearing plate position, the slip-line theory from previous studies is applied to refine the corresponding calculation formula for uplift bearing capacity. The results from the ANSYS finite element simulation confirm that the bearing plate position significantly influences the uplift bearing performance of low-header CEP single-pile foundations. The uplift bearing capacity increases with the distance between the bearing plate and the low header, reaching a peak before decreasing beyond a certain threshold. Considering the influence of the bearing plate position on bearing capacity, the affected area of soil beneath the foundation, and the time required for the system to enter its working state, the optimal bearing plate position is found to be at a distance of d<sub>1</sub> = 4R<sub>0</sub> to 5R<sub>0</sub> from the top of the pile.https://www.mdpi.com/2075-5309/15/8/1353ANSYS finite element simulationconcrete expanded pile (CEP pile) single pilebearing plateuplift bearing capacity |
| spellingShingle | Yongmei Qian Deshun Qi Yu Mou Xihui Wang Ziyu Wang Lin Sun Zhongwei Ma Analysis of the Influence of Bearing Plate Position on the Uplift Bearing Capacity of Low-Header CEP Single-Pile Foundations Buildings ANSYS finite element simulation concrete expanded pile (CEP pile) single pile bearing plate uplift bearing capacity |
| title | Analysis of the Influence of Bearing Plate Position on the Uplift Bearing Capacity of Low-Header CEP Single-Pile Foundations |
| title_full | Analysis of the Influence of Bearing Plate Position on the Uplift Bearing Capacity of Low-Header CEP Single-Pile Foundations |
| title_fullStr | Analysis of the Influence of Bearing Plate Position on the Uplift Bearing Capacity of Low-Header CEP Single-Pile Foundations |
| title_full_unstemmed | Analysis of the Influence of Bearing Plate Position on the Uplift Bearing Capacity of Low-Header CEP Single-Pile Foundations |
| title_short | Analysis of the Influence of Bearing Plate Position on the Uplift Bearing Capacity of Low-Header CEP Single-Pile Foundations |
| title_sort | analysis of the influence of bearing plate position on the uplift bearing capacity of low header cep single pile foundations |
| topic | ANSYS finite element simulation concrete expanded pile (CEP pile) single pile bearing plate uplift bearing capacity |
| url | https://www.mdpi.com/2075-5309/15/8/1353 |
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