Application of a damage constitutive model to pile–slope stability analysis
Piles were regarded as elastic materials in the traditional numerical simulation. The elastic pile would not reflect the damage of the pile in engineering, which would misjudge the reinforcement effect of piles on slopes. The specific objective of this study was to propose a damage constitutive mode...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-11-01
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| Series: | Frontiers in Materials |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmats.2022.1082292/full |
| _version_ | 1811210891633360896 |
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| author | Jian-Hong Jiang Jian-Hong Jiang Xi-Long Huang Xiao-Rui Shu Xiao Ning Yan Qu Wei-Lin Xiong |
| author_facet | Jian-Hong Jiang Jian-Hong Jiang Xi-Long Huang Xiao-Rui Shu Xiao Ning Yan Qu Wei-Lin Xiong |
| author_sort | Jian-Hong Jiang |
| collection | DOAJ |
| description | Piles were regarded as elastic materials in the traditional numerical simulation. The elastic pile would not reflect the damage of the pile in engineering, which would misjudge the reinforcement effect of piles on slopes. The specific objective of this study was to propose a damage constitutive model to replace the traditional elastic constitutive model in the numerical analysis of pile–slope stability. In this study, the pile was simulated by a damage constitutive model, which can reflect the plastic deformation of the pile. The factors of pile position and reinforcement ratio on a slope’s factor of safety (FOS) are investigated by the finite difference method using FLAC3D. The lateral displacement, bending moment, shear force, and soil pressure of balance-reinforced piles are used to study the difference between damage and elastic constitutive models. The results showed that the FOS considering the damage constitutive model could be smaller, approximately 15% less than that considering an elastic constitutive model under specific conditions. Furthermore, the difference between the two evaluation results of the internal force of the same pile can reach about 30%. It was observed that the elastic constitutive model would overestimate the reinforcement effect of the pile on the slope, which will cause potential safety hazards in engineering. This study provides a realistic damage constitutive model for the design and evaluation of slope-stabilizing piles. |
| first_indexed | 2024-04-12T05:03:37Z |
| format | Article |
| id | doaj.art-69db765f74204e5c81349bd33257be91 |
| institution | Directory Open Access Journal |
| issn | 2296-8016 |
| language | English |
| last_indexed | 2024-04-12T05:03:37Z |
| publishDate | 2022-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Materials |
| spelling | doaj.art-69db765f74204e5c81349bd33257be912022-12-22T03:46:55ZengFrontiers Media S.A.Frontiers in Materials2296-80162022-11-01910.3389/fmats.2022.10822921082292Application of a damage constitutive model to pile–slope stability analysisJian-Hong Jiang0Jian-Hong Jiang1Xi-Long Huang2Xiao-Rui Shu3Xiao Ning4Yan Qu5Wei-Lin Xiong6Shandong Provincial Communications Planning and Design Institute Group Co., Ltd., Jinan, ChinaDepartment of Geotechnical Engineering, School of Civil Engineering, Southwest Jiaotong University, Chengdu, ChinaDepartment of Geotechnical Engineering, School of Civil Engineering, Southwest Jiaotong University, Chengdu, ChinaShandong Provincial Communications Planning and Design Institute Group Co., Ltd., Jinan, ChinaShandong Provincial Communications Planning and Design Institute Group Co., Ltd., Jinan, ChinaSchool of Qilu Transportation, Shandong University, Jinan, ChinaDepartment of Geotechnical Engineering, School of Civil Engineering, Southwest Jiaotong University, Chengdu, ChinaPiles were regarded as elastic materials in the traditional numerical simulation. The elastic pile would not reflect the damage of the pile in engineering, which would misjudge the reinforcement effect of piles on slopes. The specific objective of this study was to propose a damage constitutive model to replace the traditional elastic constitutive model in the numerical analysis of pile–slope stability. In this study, the pile was simulated by a damage constitutive model, which can reflect the plastic deformation of the pile. The factors of pile position and reinforcement ratio on a slope’s factor of safety (FOS) are investigated by the finite difference method using FLAC3D. The lateral displacement, bending moment, shear force, and soil pressure of balance-reinforced piles are used to study the difference between damage and elastic constitutive models. The results showed that the FOS considering the damage constitutive model could be smaller, approximately 15% less than that considering an elastic constitutive model under specific conditions. Furthermore, the difference between the two evaluation results of the internal force of the same pile can reach about 30%. It was observed that the elastic constitutive model would overestimate the reinforcement effect of the pile on the slope, which will cause potential safety hazards in engineering. This study provides a realistic damage constitutive model for the design and evaluation of slope-stabilizing piles.https://www.frontiersin.org/articles/10.3389/fmats.2022.1082292/fulldamage constitutive modelpilesslope stabilizationsafety factornumerical simulation |
| spellingShingle | Jian-Hong Jiang Jian-Hong Jiang Xi-Long Huang Xiao-Rui Shu Xiao Ning Yan Qu Wei-Lin Xiong Application of a damage constitutive model to pile–slope stability analysis Frontiers in Materials damage constitutive model piles slope stabilization safety factor numerical simulation |
| title | Application of a damage constitutive model to pile–slope stability analysis |
| title_full | Application of a damage constitutive model to pile–slope stability analysis |
| title_fullStr | Application of a damage constitutive model to pile–slope stability analysis |
| title_full_unstemmed | Application of a damage constitutive model to pile–slope stability analysis |
| title_short | Application of a damage constitutive model to pile–slope stability analysis |
| title_sort | application of a damage constitutive model to pile slope stability analysis |
| topic | damage constitutive model piles slope stabilization safety factor numerical simulation |
| url | https://www.frontiersin.org/articles/10.3389/fmats.2022.1082292/full |
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