Experimental Study on Shear Mechanical Properties of Pile–Soil Interface Under Freezing Conditions
In order to explore the rules for the variation in the adfreeze shear strength at the interface between frozen soil and a pile foundation, and their influencing factors, a measuring system was developed to estimate the freezing strength at the interface by utilizing a pile-pressing method under a cr...
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| Format: | Article |
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MDPI AG
2025-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/15/10/5457 |
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| author | Tuo Chen Qianqian Song Jianzhou Wang Zhijian Wu |
| author_facet | Tuo Chen Qianqian Song Jianzhou Wang Zhijian Wu |
| author_sort | Tuo Chen |
| collection | DOAJ |
| description | In order to explore the rules for the variation in the adfreeze shear strength at the interface between frozen soil and a pile foundation, and their influencing factors, a measuring system was developed to estimate the freezing strength at the interface by utilizing a pile-pressing method under a cryogenic environment. Experimental results demonstrate that the maximum vertical pressure on the pile top increased significantly with the decrease in temperature under the same moisture content. The shear stress–shear displacement curves, at the bottom part of the interface, presented strain-softening characteristics, while the strain-hardening phenomenon was observed at the upper part of the interface. The strength parameters of the interface decreased with the increase in the pile depth. Moreover, the influence of temperature on the shear strength of the interface was more significant compared with that of the moisture content. The research results can provide references for the construction of pile foundations, structural design optimization, and for frozen damage prevention and treatment in permafrost regions. |
| format | Article |
| id | doaj-art-2505d693cec84954b3c280405e55cc6f |
| institution | OA Journals |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-2505d693cec84954b3c280405e55cc6f2025-08-20T01:56:14ZengMDPI AGApplied Sciences2076-34172025-05-011510545710.3390/app15105457Experimental Study on Shear Mechanical Properties of Pile–Soil Interface Under Freezing ConditionsTuo Chen0Qianqian Song1Jianzhou Wang2Zhijian Wu3State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaState Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaState Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaCollege of Transportation Engineering, Nanjing Tech University, Nanjing 210009, ChinaIn order to explore the rules for the variation in the adfreeze shear strength at the interface between frozen soil and a pile foundation, and their influencing factors, a measuring system was developed to estimate the freezing strength at the interface by utilizing a pile-pressing method under a cryogenic environment. Experimental results demonstrate that the maximum vertical pressure on the pile top increased significantly with the decrease in temperature under the same moisture content. The shear stress–shear displacement curves, at the bottom part of the interface, presented strain-softening characteristics, while the strain-hardening phenomenon was observed at the upper part of the interface. The strength parameters of the interface decreased with the increase in the pile depth. Moreover, the influence of temperature on the shear strength of the interface was more significant compared with that of the moisture content. The research results can provide references for the construction of pile foundations, structural design optimization, and for frozen damage prevention and treatment in permafrost regions.https://www.mdpi.com/2076-3417/15/10/5457adfreezing strengthpile-pressing methodpile–soil interfaceshear properties |
| spellingShingle | Tuo Chen Qianqian Song Jianzhou Wang Zhijian Wu Experimental Study on Shear Mechanical Properties of Pile–Soil Interface Under Freezing Conditions Applied Sciences adfreezing strength pile-pressing method pile–soil interface shear properties |
| title | Experimental Study on Shear Mechanical Properties of Pile–Soil Interface Under Freezing Conditions |
| title_full | Experimental Study on Shear Mechanical Properties of Pile–Soil Interface Under Freezing Conditions |
| title_fullStr | Experimental Study on Shear Mechanical Properties of Pile–Soil Interface Under Freezing Conditions |
| title_full_unstemmed | Experimental Study on Shear Mechanical Properties of Pile–Soil Interface Under Freezing Conditions |
| title_short | Experimental Study on Shear Mechanical Properties of Pile–Soil Interface Under Freezing Conditions |
| title_sort | experimental study on shear mechanical properties of pile soil interface under freezing conditions |
| topic | adfreezing strength pile-pressing method pile–soil interface shear properties |
| url | https://www.mdpi.com/2076-3417/15/10/5457 |
| work_keys_str_mv | AT tuochen experimentalstudyonshearmechanicalpropertiesofpilesoilinterfaceunderfreezingconditions AT qianqiansong experimentalstudyonshearmechanicalpropertiesofpilesoilinterfaceunderfreezingconditions AT jianzhouwang experimentalstudyonshearmechanicalpropertiesofpilesoilinterfaceunderfreezingconditions AT zhijianwu experimentalstudyonshearmechanicalpropertiesofpilesoilinterfaceunderfreezingconditions |