Study on the Force Model of Squeezed Branch Piles Based on Surface Potential Characteristics
Squeezed branch piles, which boast the advantages of great bearing capacity, small settlement, and good stability, are an important infrastructure in the foundation of buildings, and their safety state is related to the safety of the entire structure. As a non-destructive testing method, surface pot...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-09-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/9/2231 |
| _version_ | 1797580953125650432 |
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| author | Siqing Zhang Xiaofei Liu Huajie Zhang Chunde Piao Yue Niu |
| author_facet | Siqing Zhang Xiaofei Liu Huajie Zhang Chunde Piao Yue Niu |
| author_sort | Siqing Zhang |
| collection | DOAJ |
| description | Squeezed branch piles, which boast the advantages of great bearing capacity, small settlement, and good stability, are an important infrastructure in the foundation of buildings, and their safety state is related to the safety of the entire structure. As a non-destructive testing method, surface potential can be used to effectively evaluate the damaged state of a pile foundation without destroying its stability. On this basis, in this study, the characteristics of surface potential change during settlement and deformation of squeezed branch piles under graded loading were tested and analyzed with the aid of a self-made loading system of reaction beams and an LB-IV multi-channel potential data acquisition system. The results show that: Under graded loading, squeezed branch piles can produce surface potential signals whose intensity can well reflect the settlement and local failure characteristics of the pile foundation; The potential signals change in advance of load; and they fluctuate violently before local fracturing of squeezed branch piles. The unstable fluctuation of the potential signal can be regarded as a precursor to the fracturing of squeezed branch piles. The research results have positive theoretical significance and important application value for assessing the stability of both branch piles and their stress states on site and monitoring and forecasting the disaster of pile foundation instability. |
| first_indexed | 2024-03-10T22:58:29Z |
| format | Article |
| id | doaj.art-8c145b68eb9b40ab99f48225f8ec03c6 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-10T22:58:29Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-8c145b68eb9b40ab99f48225f8ec03c62023-11-19T09:51:12ZengMDPI AGBuildings2075-53092023-09-01139223110.3390/buildings13092231Study on the Force Model of Squeezed Branch Piles Based on Surface Potential CharacteristicsSiqing Zhang0Xiaofei Liu1Huajie Zhang2Chunde Piao3Yue Niu4Key Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Ministry of Education, Xuzhou 21116, ChinaKey Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Ministry of Education, Xuzhou 21116, ChinaKey Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Ministry of Education, Xuzhou 21116, ChinaSchool of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, ChinaKey Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Ministry of Education, Xuzhou 21116, ChinaSqueezed branch piles, which boast the advantages of great bearing capacity, small settlement, and good stability, are an important infrastructure in the foundation of buildings, and their safety state is related to the safety of the entire structure. As a non-destructive testing method, surface potential can be used to effectively evaluate the damaged state of a pile foundation without destroying its stability. On this basis, in this study, the characteristics of surface potential change during settlement and deformation of squeezed branch piles under graded loading were tested and analyzed with the aid of a self-made loading system of reaction beams and an LB-IV multi-channel potential data acquisition system. The results show that: Under graded loading, squeezed branch piles can produce surface potential signals whose intensity can well reflect the settlement and local failure characteristics of the pile foundation; The potential signals change in advance of load; and they fluctuate violently before local fracturing of squeezed branch piles. The unstable fluctuation of the potential signal can be regarded as a precursor to the fracturing of squeezed branch piles. The research results have positive theoretical significance and important application value for assessing the stability of both branch piles and their stress states on site and monitoring and forecasting the disaster of pile foundation instability.https://www.mdpi.com/2075-5309/13/9/2231graded loadingsqueezed branch pilessurface potentialprecursor featureforce model |
| spellingShingle | Siqing Zhang Xiaofei Liu Huajie Zhang Chunde Piao Yue Niu Study on the Force Model of Squeezed Branch Piles Based on Surface Potential Characteristics Buildings graded loading squeezed branch piles surface potential precursor feature force model |
| title | Study on the Force Model of Squeezed Branch Piles Based on Surface Potential Characteristics |
| title_full | Study on the Force Model of Squeezed Branch Piles Based on Surface Potential Characteristics |
| title_fullStr | Study on the Force Model of Squeezed Branch Piles Based on Surface Potential Characteristics |
| title_full_unstemmed | Study on the Force Model of Squeezed Branch Piles Based on Surface Potential Characteristics |
| title_short | Study on the Force Model of Squeezed Branch Piles Based on Surface Potential Characteristics |
| title_sort | study on the force model of squeezed branch piles based on surface potential characteristics |
| topic | graded loading squeezed branch piles surface potential precursor feature force model |
| url | https://www.mdpi.com/2075-5309/13/9/2231 |
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