Recycling Waste Soils for Stability Enhancement in Bored Pile Construction
Instability in the hole wall of bored pile may cause serious environmental problems. Therefore, using the small hole expansion theory and elastic–plastic theory, we studied the instability mechanism of the hole wall of bored pile, determined the stress expansion solution of the soil layer after the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-01-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/15/2/272 |
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| author | Feng Li Lei Zhang Zhengzhen Wang Qiqi Liu Tiantao Su Jinke Wang |
| author_facet | Feng Li Lei Zhang Zhengzhen Wang Qiqi Liu Tiantao Su Jinke Wang |
| author_sort | Feng Li |
| collection | DOAJ |
| description | Instability in the hole wall of bored pile may cause serious environmental problems. Therefore, using the small hole expansion theory and elastic–plastic theory, we studied the instability mechanism of the hole wall of bored pile, determined the stress expansion solution of the soil layer after the excavation of pile holes in the semi-infinite elastic soil layer, and established a mechanical model. Then, the stability of the hole wall of bored pile in the cohesive soil layer and sandy soil layer was analyzed, and a formula for calculating pile hole wall stability was obtained. Finally, the stability of the hole wall of bored pile under the action of mud slurry was calculated, and the stress on the pile hole wall was analyzed when local instability and overall instability occurred, respectively. The results show that in a sandy soil layer, the safety factor of the hole wall of bored pile has no connection with the depth of the pile hole but is related to the density of mud slurry in the pile hole. In unstable soil layers, the pile hole wall was prone to instability, and the stability of the hole wall could be improved by appropriately increasing the gravity of mud slurry. With the increase in pile diameter, the lateral displacement and deformation of the hole wall increase, and the displacement of the soil layer increases when the hole wall is unstable, increasing the possibility of forming variable cross-section piles correspondingly. |
| format | Article |
| id | doaj-art-a1a0296c5da2435da5faab0eae759cb2 |
| institution | Kabale University |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-a1a0296c5da2435da5faab0eae759cb22025-01-24T13:26:25ZengMDPI AGBuildings2075-53092025-01-0115227210.3390/buildings15020272Recycling Waste Soils for Stability Enhancement in Bored Pile ConstructionFeng Li0Lei Zhang1Zhengzhen Wang2Qiqi Liu3Tiantao Su4Jinke Wang5Gansu Road and Bridge Construction Group, Lanzhou 730030, ChinaSchool of Civil Engineering, Key Laboratory of Disaster Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Civil Engineering, Key Laboratory of Disaster Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Civil Engineering, Key Laboratory of Disaster Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Civil Engineering, Lanzhou Institute of Technology, Lanzhou 730050, ChinaGansu Jiantou Construction Co., Ltd., Lanzhou 730050, ChinaInstability in the hole wall of bored pile may cause serious environmental problems. Therefore, using the small hole expansion theory and elastic–plastic theory, we studied the instability mechanism of the hole wall of bored pile, determined the stress expansion solution of the soil layer after the excavation of pile holes in the semi-infinite elastic soil layer, and established a mechanical model. Then, the stability of the hole wall of bored pile in the cohesive soil layer and sandy soil layer was analyzed, and a formula for calculating pile hole wall stability was obtained. Finally, the stability of the hole wall of bored pile under the action of mud slurry was calculated, and the stress on the pile hole wall was analyzed when local instability and overall instability occurred, respectively. The results show that in a sandy soil layer, the safety factor of the hole wall of bored pile has no connection with the depth of the pile hole but is related to the density of mud slurry in the pile hole. In unstable soil layers, the pile hole wall was prone to instability, and the stability of the hole wall could be improved by appropriately increasing the gravity of mud slurry. With the increase in pile diameter, the lateral displacement and deformation of the hole wall increase, and the displacement of the soil layer increases when the hole wall is unstable, increasing the possibility of forming variable cross-section piles correspondingly.https://www.mdpi.com/2075-5309/15/2/272pile foundationbored pilehole walllocal instabilityoverall instability |
| spellingShingle | Feng Li Lei Zhang Zhengzhen Wang Qiqi Liu Tiantao Su Jinke Wang Recycling Waste Soils for Stability Enhancement in Bored Pile Construction Buildings pile foundation bored pile hole wall local instability overall instability |
| title | Recycling Waste Soils for Stability Enhancement in Bored Pile Construction |
| title_full | Recycling Waste Soils for Stability Enhancement in Bored Pile Construction |
| title_fullStr | Recycling Waste Soils for Stability Enhancement in Bored Pile Construction |
| title_full_unstemmed | Recycling Waste Soils for Stability Enhancement in Bored Pile Construction |
| title_short | Recycling Waste Soils for Stability Enhancement in Bored Pile Construction |
| title_sort | recycling waste soils for stability enhancement in bored pile construction |
| topic | pile foundation bored pile hole wall local instability overall instability |
| url | https://www.mdpi.com/2075-5309/15/2/272 |
| work_keys_str_mv | AT fengli recyclingwastesoilsforstabilityenhancementinboredpileconstruction AT leizhang recyclingwastesoilsforstabilityenhancementinboredpileconstruction AT zhengzhenwang recyclingwastesoilsforstabilityenhancementinboredpileconstruction AT qiqiliu recyclingwastesoilsforstabilityenhancementinboredpileconstruction AT tiantaosu recyclingwastesoilsforstabilityenhancementinboredpileconstruction AT jinkewang recyclingwastesoilsforstabilityenhancementinboredpileconstruction |