Academic Journal
Simulation Method Improvement of Confined Concrete Box Steel Arch Supports in Soft Rock Tunnels.
| Τίτλος: | Simulation Method Improvement of Confined Concrete Box Steel Arch Supports in Soft Rock Tunnels. |
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| Συγγραφείς: | Wang, Xiangxiang, Huang, Shuling, Ding, Xiuli, Zhang, Yuting, Liu, Dengxue, Han, Gang |
| Πηγή: | Symmetry (20738994); Dec2025, Vol. 17 Issue 12, p2076, 19p |
| Θεματικοί όροι: | Computer simulation, Tunnels, Structural analysis (Engineering), Statistical accuracy, Concrete, Mechanical efficiency, Compressive strength |
| Περίληψη: | The confined concrete box steel arch support—composed of box steel and core concrete with a geometrically symmetric double-chamber cross-section—is an innovative solution for effective deformation control in soft rock tunnels. To address the longstanding challenge of balancing accuracy and efficiency in numerical simulations of such supports, this study proposes an improved simulation method. Specifically, a compression-bending yield criterion for the steel–concrete composite structure was derived based on the plane section assumption and full-section plasticity criterion. This criterion was then embedded into a pile element via Fish programming to develop an improved pile element, enabling accurate simulation of the bending moment–axial force coupling effect. Verification results demonstrate that the derived yield criterion precisely captures the axial force–bending moment coupling behavior of the confined concrete box section. Numerical simulation data exhibit excellent consistency with the theoretical m-n curve, with the maximum deviation in yield axial force and bending moment not exceeding 10%. Compared with the solid element model, the improved pile element model shows differences of less than 6%, 13%, and 21% in key indicators of surrounding rock stress, deformation, and plastic zone, respectively—meeting engineering accuracy requirements. Notably, the mesh count of the improved model is only 5.5% of that of the solid element model, achieving over a 40-fold increase in computational efficiency. Furthermore, this study identifies section type and section size as the dominant parameters governing surrounding rock stability, providing valuable insights for the design and numerical simulation optimization of soft-rock tunnel support systems. [ABSTRACT FROM AUTHOR] |
| Copyright of Symmetry (20738994) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Βάση Δεδομένων: | Complementary Index |
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| Items | – Name: Title Label: Title Group: Ti Data: Simulation Method Improvement of Confined Concrete Box Steel Arch Supports in Soft Rock Tunnels. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Wang%2C+Xiangxiang%22">Wang, Xiangxiang</searchLink><br /><searchLink fieldCode="AR" term="%22Huang%2C+Shuling%22">Huang, Shuling</searchLink><br /><searchLink fieldCode="AR" term="%22Ding%2C+Xiuli%22">Ding, Xiuli</searchLink><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Yuting%22">Zhang, Yuting</searchLink><br /><searchLink fieldCode="AR" term="%22Liu%2C+Dengxue%22">Liu, Dengxue</searchLink><br /><searchLink fieldCode="AR" term="%22Han%2C+Gang%22">Han, Gang</searchLink> – Name: TitleSource Label: Source Group: Src Data: Symmetry (20738994); Dec2025, Vol. 17 Issue 12, p2076, 19p – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Tunnels%22">Tunnels</searchLink><br /><searchLink fieldCode="DE" term="%22Structural+analysis+%28Engineering%29%22">Structural analysis (Engineering)</searchLink><br /><searchLink fieldCode="DE" term="%22Statistical+accuracy%22">Statistical accuracy</searchLink><br /><searchLink fieldCode="DE" term="%22Concrete%22">Concrete</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+efficiency%22">Mechanical efficiency</searchLink><br /><searchLink fieldCode="DE" term="%22Compressive+strength%22">Compressive strength</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The confined concrete box steel arch support—composed of box steel and core concrete with a geometrically symmetric double-chamber cross-section—is an innovative solution for effective deformation control in soft rock tunnels. To address the longstanding challenge of balancing accuracy and efficiency in numerical simulations of such supports, this study proposes an improved simulation method. Specifically, a compression-bending yield criterion for the steel–concrete composite structure was derived based on the plane section assumption and full-section plasticity criterion. This criterion was then embedded into a pile element via Fish programming to develop an improved pile element, enabling accurate simulation of the bending moment–axial force coupling effect. Verification results demonstrate that the derived yield criterion precisely captures the axial force–bending moment coupling behavior of the confined concrete box section. Numerical simulation data exhibit excellent consistency with the theoretical m-n curve, with the maximum deviation in yield axial force and bending moment not exceeding 10%. Compared with the solid element model, the improved pile element model shows differences of less than 6%, 13%, and 21% in key indicators of surrounding rock stress, deformation, and plastic zone, respectively—meeting engineering accuracy requirements. Notably, the mesh count of the improved model is only 5.5% of that of the solid element model, achieving over a 40-fold increase in computational efficiency. Furthermore, this study identifies section type and section size as the dominant parameters governing surrounding rock stability, providing valuable insights for the design and numerical simulation optimization of soft-rock tunnel support systems. [ABSTRACT FROM AUTHOR] – Name: Abstract Label: Group: Ab Data: <i>Copyright of Symmetry (20738994) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/sym17122076 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 19 StartPage: 2076 Subjects: – SubjectFull: Computer simulation Type: general – SubjectFull: Tunnels Type: general – SubjectFull: Structural analysis (Engineering) Type: general – SubjectFull: Statistical accuracy Type: general – SubjectFull: Concrete Type: general – SubjectFull: Mechanical efficiency Type: general – SubjectFull: Compressive strength Type: general Titles: – TitleFull: Simulation Method Improvement of Confined Concrete Box Steel Arch Supports in Soft Rock Tunnels. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Wang, Xiangxiang – PersonEntity: Name: NameFull: Huang, Shuling – PersonEntity: Name: NameFull: Ding, Xiuli – PersonEntity: Name: NameFull: Zhang, Yuting – PersonEntity: Name: NameFull: Liu, Dengxue – PersonEntity: Name: NameFull: Han, Gang IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 20738994 Numbering: – Type: volume Value: 17 – Type: issue Value: 12 Titles: – TitleFull: Symmetry (20738994) Type: main |
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