Bearing behavior of pile foundation in karst region: Physical model test and finite element analysis
The presence of karst formations significantly impacts the load-bearing capacity of pile foundations in karst geological environments, posing a challenge to their design. This study investigated the bearing characteristics of karst pile foundations using the physical model test and numerical analysi...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2024-02-01
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| Series: | Applied Rheology |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/arh-2023-0115 |
| _version_ | 1797294650604650496 |
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| author | Sheng Minghong Lu Fangqing Jiang Nan Guo Panpan Li Xian An Ran Wang Yixian |
| author_facet | Sheng Minghong Lu Fangqing Jiang Nan Guo Panpan Li Xian An Ran Wang Yixian |
| author_sort | Sheng Minghong |
| collection | DOAJ |
| description | The presence of karst formations significantly impacts the load-bearing capacity of pile foundations in karst geological environments, posing a challenge to their design. This study investigated the bearing characteristics of karst pile foundations using the physical model test and numerical analysis. First, the influence of cave height and span on the bearing capacity of pile foundations is examined using model tests. The results demonstrate that the height of karst caves greatly affects the bearing capacity of karst pile foundations. Subsequently, numerical analysis further explores the bearing characteristics of these foundations. It reveals that as the top load on pile increases, an arch-shaped tensile damage zone forms at the top of karst cave and gradually expands. The rock failure in this area leads to a decrease in adhesion between rock strata and pile foundation, consequently reducing its load-bearing capacity. Finally, experimental results are compared with numerical results to validate consistency and mutual verifiability between physical model tests and numerical analyses. The outcomes of the research provide valuable insights for designing rock-socketed pile foundations in similar karst areas. |
| first_indexed | 2024-03-07T21:33:21Z |
| format | Article |
| id | doaj.art-0f4d7a262b33438e841f0d418b5b5d73 |
| institution | Directory Open Access Journal |
| issn | 1617-8106 |
| language | English |
| last_indexed | 2024-03-07T21:33:21Z |
| publishDate | 2024-02-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Applied Rheology |
| spelling | doaj.art-0f4d7a262b33438e841f0d418b5b5d732024-02-26T14:28:02ZengDe GruyterApplied Rheology1617-81062024-02-013412326310.1515/arh-2023-0115Bearing behavior of pile foundation in karst region: Physical model test and finite element analysisSheng Minghong0Lu Fangqing1Jiang Nan2Guo Panpan3Li Xian4An Ran5Wang Yixian6College of Civil Engineering, Hefei University of Technology, Hefei230009, ChinaCollege of Civil Engineering, Hefei University of Technology, Hefei230009, ChinaAnhui Huadian Engineering consulting & Design Co., Ltd, Hefei230022, ChinaCollege of Civil Engineering, Hefei University of Technology, Hefei230009, ChinaCollege of Civil Engineering, Hefei University of Technology, Hefei230009, ChinaCollege of Civil Engineering, Hefei University of Technology, Hefei230009, ChinaCollege of Civil Engineering, Hefei University of Technology, Hefei230009, ChinaThe presence of karst formations significantly impacts the load-bearing capacity of pile foundations in karst geological environments, posing a challenge to their design. This study investigated the bearing characteristics of karst pile foundations using the physical model test and numerical analysis. First, the influence of cave height and span on the bearing capacity of pile foundations is examined using model tests. The results demonstrate that the height of karst caves greatly affects the bearing capacity of karst pile foundations. Subsequently, numerical analysis further explores the bearing characteristics of these foundations. It reveals that as the top load on pile increases, an arch-shaped tensile damage zone forms at the top of karst cave and gradually expands. The rock failure in this area leads to a decrease in adhesion between rock strata and pile foundation, consequently reducing its load-bearing capacity. Finally, experimental results are compared with numerical results to validate consistency and mutual verifiability between physical model tests and numerical analyses. The outcomes of the research provide valuable insights for designing rock-socketed pile foundations in similar karst areas.https://doi.org/10.1515/arh-2023-0115pile bearing capacityphysical model testskarstnumerical analyses |
| spellingShingle | Sheng Minghong Lu Fangqing Jiang Nan Guo Panpan Li Xian An Ran Wang Yixian Bearing behavior of pile foundation in karst region: Physical model test and finite element analysis Applied Rheology pile bearing capacity physical model tests karst numerical analyses |
| title | Bearing behavior of pile foundation in karst region: Physical model test and finite element analysis |
| title_full | Bearing behavior of pile foundation in karst region: Physical model test and finite element analysis |
| title_fullStr | Bearing behavior of pile foundation in karst region: Physical model test and finite element analysis |
| title_full_unstemmed | Bearing behavior of pile foundation in karst region: Physical model test and finite element analysis |
| title_short | Bearing behavior of pile foundation in karst region: Physical model test and finite element analysis |
| title_sort | bearing behavior of pile foundation in karst region physical model test and finite element analysis |
| topic | pile bearing capacity physical model tests karst numerical analyses |
| url | https://doi.org/10.1515/arh-2023-0115 |
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