Solution of plastic zone range in soft rock tunnel surroundings considering joint damage
Abstract Based on the Hohai model, a creep constitutive model of viscoelastic-plastic soft rock with joint fracture damage is proposed to solve the rheological failure problem in soft rock tunnels surrounding rock. Based on the proposed creep model of rock with joint damage and the current analytica...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-12-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-81540-6 |
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| author | Taotao Hu Yulong Zhao Peng Tu Jianlong Liu |
| author_facet | Taotao Hu Yulong Zhao Peng Tu Jianlong Liu |
| author_sort | Taotao Hu |
| collection | DOAJ |
| description | Abstract Based on the Hohai model, a creep constitutive model of viscoelastic-plastic soft rock with joint fracture damage is proposed to solve the rheological failure problem in soft rock tunnels surrounding rock. Based on the proposed creep model of rock with joint damage and the current analytical analysis method of circular tunnel, the analytical formulas of viscoelastic-viscoplastic stress and displacement of circular tunnel with joint damage surrounding rock are derived. ABAQUS finite element software is used to simulate the excavation of surrounding rock with different joint angles. The numerical solution is compared with the analytical solution to verify the accuracy of the theoretical formula. The results show that when the joint inclination is 45°, the displacement values of the two are 16.36 mm and 16.87 mm respectively. The error of the two is 3.02%. The theoretical calculation is in good agreement with the numerical simulation results, verifying the rationality of the derived analytical formula of viscoelastic-viscoplastic stress and displacement of soft rock tunnel with joint damage. |
| format | Article |
| id | doaj-art-5e6f283f7c4c4b96902942deaa4f1c13 |
| institution | OA Journals |
| issn | 2045-2322 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-5e6f283f7c4c4b96902942deaa4f1c132025-08-20T02:20:38ZengNature PortfolioScientific Reports2045-23222024-12-0114111610.1038/s41598-024-81540-6Solution of plastic zone range in soft rock tunnel surroundings considering joint damageTaotao Hu0Yulong Zhao1Peng Tu2Jianlong Liu3Sclool of Highway, Chang’an UniversitySclool of Highway, Chang’an UniversityCCCC Second Highway Engineering CO., LTDSclool of Highway, Chang’an UniversityAbstract Based on the Hohai model, a creep constitutive model of viscoelastic-plastic soft rock with joint fracture damage is proposed to solve the rheological failure problem in soft rock tunnels surrounding rock. Based on the proposed creep model of rock with joint damage and the current analytical analysis method of circular tunnel, the analytical formulas of viscoelastic-viscoplastic stress and displacement of circular tunnel with joint damage surrounding rock are derived. ABAQUS finite element software is used to simulate the excavation of surrounding rock with different joint angles. The numerical solution is compared with the analytical solution to verify the accuracy of the theoretical formula. The results show that when the joint inclination is 45°, the displacement values of the two are 16.36 mm and 16.87 mm respectively. The error of the two is 3.02%. The theoretical calculation is in good agreement with the numerical simulation results, verifying the rationality of the derived analytical formula of viscoelastic-viscoplastic stress and displacement of soft rock tunnel with joint damage.https://doi.org/10.1038/s41598-024-81540-6Soft rockJoint damageImproved Hohai modelPlastic zoneUMAT subroutine |
| spellingShingle | Taotao Hu Yulong Zhao Peng Tu Jianlong Liu Solution of plastic zone range in soft rock tunnel surroundings considering joint damage Scientific Reports Soft rock Joint damage Improved Hohai model Plastic zone UMAT subroutine |
| title | Solution of plastic zone range in soft rock tunnel surroundings considering joint damage |
| title_full | Solution of plastic zone range in soft rock tunnel surroundings considering joint damage |
| title_fullStr | Solution of plastic zone range in soft rock tunnel surroundings considering joint damage |
| title_full_unstemmed | Solution of plastic zone range in soft rock tunnel surroundings considering joint damage |
| title_short | Solution of plastic zone range in soft rock tunnel surroundings considering joint damage |
| title_sort | solution of plastic zone range in soft rock tunnel surroundings considering joint damage |
| topic | Soft rock Joint damage Improved Hohai model Plastic zone UMAT subroutine |
| url | https://doi.org/10.1038/s41598-024-81540-6 |
| work_keys_str_mv | AT taotaohu solutionofplasticzonerangeinsoftrocktunnelsurroundingsconsideringjointdamage AT yulongzhao solutionofplasticzonerangeinsoftrocktunnelsurroundingsconsideringjointdamage AT pengtu solutionofplasticzonerangeinsoftrocktunnelsurroundingsconsideringjointdamage AT jianlongliu solutionofplasticzonerangeinsoftrocktunnelsurroundingsconsideringjointdamage |