Numerical Simulation Study of Bearing Characteristics of Large-Diameter Flexible Piles Under Complex Loads
The majority of the existing calculation methods for determining the ultimate bearing capacity of steel-pipe piles using Chinese criteria are designed for piles with diameters smaller than 2 m. To investigate the bearing capacity of flexible steel-pipe piles with diameters larger than 2 m under comb...
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MDPI AG
2024-11-01
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| author | Xueying Yang Weiming Gong Qian Yin |
| author_facet | Xueying Yang Weiming Gong Qian Yin |
| author_sort | Xueying Yang |
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| description | The majority of the existing calculation methods for determining the ultimate bearing capacity of steel-pipe piles using Chinese criteria are designed for piles with diameters smaller than 2 m. To investigate the bearing capacity of flexible steel-pipe piles with diameters larger than 2 m under combined loading conditions, reveal nonlinear interactions between vertical and horizontal loads, and propose bearing capacity envelopes, in this paper, a numerical method was used to study the bearing capacity of a flexible pile with a diameter of 2.8 m and an embedment length of 72 m under vertical and horizontal loading conditions. First, a numerical model was developed and calibrated using field test results. Then, the effects of vertical pressure on horizontal capacity and lateral force on vertical capacity and uplift capacity of the pile were analyzed. The results indicate that vertical pressure at the top of the pile can nonlinearly reduce its horizontal capacity, but this pressure initially has a slight positive effect on the horizontal bearing capacity before causing a rapid decrease. Conversely, horizontal force negatively impacts both the compressive and uplift bearing capacities of the pile. Finally, depending on the above results, bearing capacity envelopes for piles subjected to vertical and horizontal loads were proposed. |
| format | Article |
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| language | English |
| publishDate | 2024-11-01 |
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| spelling | doaj-art-36791812b8cd4b85ae37dc019fdf18802025-08-20T02:07:59ZengMDPI AGBuildings2075-53092024-11-011411365110.3390/buildings14113651Numerical Simulation Study of Bearing Characteristics of Large-Diameter Flexible Piles Under Complex LoadsXueying Yang0Weiming Gong1Qian Yin2School of Civil Engineering, Southeast University, Nanjing 211189, ChinaSchool of Civil Engineering, Southeast University, Nanjing 211189, ChinaSchool of Civil Engineering, Southeast University, Nanjing 211189, ChinaThe majority of the existing calculation methods for determining the ultimate bearing capacity of steel-pipe piles using Chinese criteria are designed for piles with diameters smaller than 2 m. To investigate the bearing capacity of flexible steel-pipe piles with diameters larger than 2 m under combined loading conditions, reveal nonlinear interactions between vertical and horizontal loads, and propose bearing capacity envelopes, in this paper, a numerical method was used to study the bearing capacity of a flexible pile with a diameter of 2.8 m and an embedment length of 72 m under vertical and horizontal loading conditions. First, a numerical model was developed and calibrated using field test results. Then, the effects of vertical pressure on horizontal capacity and lateral force on vertical capacity and uplift capacity of the pile were analyzed. The results indicate that vertical pressure at the top of the pile can nonlinearly reduce its horizontal capacity, but this pressure initially has a slight positive effect on the horizontal bearing capacity before causing a rapid decrease. Conversely, horizontal force negatively impacts both the compressive and uplift bearing capacities of the pile. Finally, depending on the above results, bearing capacity envelopes for piles subjected to vertical and horizontal loads were proposed.https://www.mdpi.com/2075-5309/14/11/3651large-diameter flexible pilescombined loading conditionsultimate bearing capacitybearing capacity envelopes |
| spellingShingle | Xueying Yang Weiming Gong Qian Yin Numerical Simulation Study of Bearing Characteristics of Large-Diameter Flexible Piles Under Complex Loads Buildings large-diameter flexible piles combined loading conditions ultimate bearing capacity bearing capacity envelopes |
| title | Numerical Simulation Study of Bearing Characteristics of Large-Diameter Flexible Piles Under Complex Loads |
| title_full | Numerical Simulation Study of Bearing Characteristics of Large-Diameter Flexible Piles Under Complex Loads |
| title_fullStr | Numerical Simulation Study of Bearing Characteristics of Large-Diameter Flexible Piles Under Complex Loads |
| title_full_unstemmed | Numerical Simulation Study of Bearing Characteristics of Large-Diameter Flexible Piles Under Complex Loads |
| title_short | Numerical Simulation Study of Bearing Characteristics of Large-Diameter Flexible Piles Under Complex Loads |
| title_sort | numerical simulation study of bearing characteristics of large diameter flexible piles under complex loads |
| topic | large-diameter flexible piles combined loading conditions ultimate bearing capacity bearing capacity envelopes |
| url | https://www.mdpi.com/2075-5309/14/11/3651 |
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