Evaluating Pile-Supported Embankment Considering the Soil Anisotropy Effect
It is an economical way to use the pile-supported embankment for the construction of the embankment over soft soil. The combined use of piles and reinforcement effectively reduces the differential settlement of the embankment surface. However, the previous analysis of embankment stress and settlemen...
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MDPI AG
2023-11-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/21/12064 |
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| author | Yan Zhuang Jie Chen Yunlong Wang Hu Fan Zhi Chen Jinxin Li |
| author_facet | Yan Zhuang Jie Chen Yunlong Wang Hu Fan Zhi Chen Jinxin Li |
| author_sort | Yan Zhuang |
| collection | DOAJ |
| description | It is an economical way to use the pile-supported embankment for the construction of the embankment over soft soil. The combined use of piles and reinforcement effectively reduces the differential settlement of the embankment surface. However, the previous analysis of embankment stress and settlement did not take into account the anisotropy in the embankment filler. In this paper, the UMAT subroutine is developed by using the material subroutine interface in ABAQUS 2016 finite element software. The anisotropy of soil cohesion and friction angle has been incorporated into the Mohr–Coulomb yield criterion so that it can consider the anisotropy of soil. The accuracy of the anisotropic yield criterion in this paper is verified by an ABAQUS source program and related engineering examples. It is found that the anisotropy value of soil cohesion is inversely proportional to the stress ratio on the pile–soil interface while being directly proportional to the tensile stress applied to the geogrid. The results show that the anisotropy of the friction angle decreases with the soil arching effect but increases by 23.1% with the tensile stress on the geogrid. The position of the settlement plane remains relatively constant at 2.3 m as the friction angle anisotropy coefficient increases. These research results provide valuable theoretical guidance for on-site construction design. |
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| language | English |
| last_indexed | 2024-03-11T11:32:51Z |
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| spelling | doaj.art-a4e739222da64c7fb42fcd9f5dd05e1d2023-11-10T14:59:46ZengMDPI AGApplied Sciences2076-34172023-11-0113211206410.3390/app132112064Evaluating Pile-Supported Embankment Considering the Soil Anisotropy EffectYan Zhuang0Jie Chen1Yunlong Wang2Hu Fan3Zhi Chen4Jinxin Li5School of Civil Engineering and Environment, Hubei University of Technology, Wuhan 430068, ChinaSchool of Civil Engineering, Southeast University, Nanjing 211189, ChinaSchool of Civil Engineering, Southeast University, Nanjing 211189, ChinaSchool of Civil Engineering and Environment, Hubei University of Technology, Wuhan 430068, ChinaSchool of Civil Engineering and Environment, Hubei University of Technology, Wuhan 430068, ChinaSchool of Civil Engineering, Southeast University, Nanjing 211189, ChinaIt is an economical way to use the pile-supported embankment for the construction of the embankment over soft soil. The combined use of piles and reinforcement effectively reduces the differential settlement of the embankment surface. However, the previous analysis of embankment stress and settlement did not take into account the anisotropy in the embankment filler. In this paper, the UMAT subroutine is developed by using the material subroutine interface in ABAQUS 2016 finite element software. The anisotropy of soil cohesion and friction angle has been incorporated into the Mohr–Coulomb yield criterion so that it can consider the anisotropy of soil. The accuracy of the anisotropic yield criterion in this paper is verified by an ABAQUS source program and related engineering examples. It is found that the anisotropy value of soil cohesion is inversely proportional to the stress ratio on the pile–soil interface while being directly proportional to the tensile stress applied to the geogrid. The results show that the anisotropy of the friction angle decreases with the soil arching effect but increases by 23.1% with the tensile stress on the geogrid. The position of the settlement plane remains relatively constant at 2.3 m as the friction angle anisotropy coefficient increases. These research results provide valuable theoretical guidance for on-site construction design.https://www.mdpi.com/2076-3417/13/21/12064pile-supported embankmentMohr–Coulomb modelUMAT subroutinestress distributionsettlement deformation |
| spellingShingle | Yan Zhuang Jie Chen Yunlong Wang Hu Fan Zhi Chen Jinxin Li Evaluating Pile-Supported Embankment Considering the Soil Anisotropy Effect Applied Sciences pile-supported embankment Mohr–Coulomb model UMAT subroutine stress distribution settlement deformation |
| title | Evaluating Pile-Supported Embankment Considering the Soil Anisotropy Effect |
| title_full | Evaluating Pile-Supported Embankment Considering the Soil Anisotropy Effect |
| title_fullStr | Evaluating Pile-Supported Embankment Considering the Soil Anisotropy Effect |
| title_full_unstemmed | Evaluating Pile-Supported Embankment Considering the Soil Anisotropy Effect |
| title_short | Evaluating Pile-Supported Embankment Considering the Soil Anisotropy Effect |
| title_sort | evaluating pile supported embankment considering the soil anisotropy effect |
| topic | pile-supported embankment Mohr–Coulomb model UMAT subroutine stress distribution settlement deformation |
| url | https://www.mdpi.com/2076-3417/13/21/12064 |
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