Study on the displacement and stress variation of frozen curtain during excavation of subway cross passage
Understanding the deformation behavior of the frozen curtain during excavation is crucial when employing artificial freezing methods in construction. This study uses indoor frozen soil experiments and numerical simulations to determine the compressive and flexural strengths of the frozen curtain, al...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24016927 |
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| author | Junhao Chen Zebiao You Jianlin Wang |
| author_facet | Junhao Chen Zebiao You Jianlin Wang |
| author_sort | Junhao Chen |
| collection | DOAJ |
| description | Understanding the deformation behavior of the frozen curtain during excavation is crucial when employing artificial freezing methods in construction. This study uses indoor frozen soil experiments and numerical simulations to determine the compressive and flexural strengths of the frozen curtain, along with its displacement and stress variation patterns. Results show that lower freezing temperatures continuously increase uniaxial compressive strength, flexural strength, and elastic modulus of frozen soil, while Poisson's ratio decreases. Among the two soil types studied, silty interlayered with sand demonstrates greater compressive strength, flexural strength, and elastic modulus. Numerical simulation analysis indicates that the top of the frozen curtain experiences settlement during cross passage excavation, while the bottom exhibits uplift. The safety factors of the frozen curtain were validated and confirmed to be within safe limits. This study integrates frozen soil experiments and numerical simulations to offer guidance for future cross passage excavations and related engineering designs. |
| format | Article |
| id | doaj-art-36ded39e98104aaeaeb5f4e0a6f8c539 |
| institution | DOAJ |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-36ded39e98104aaeaeb5f4e0a6f8c5392025-08-20T02:44:46ZengElsevierCase Studies in Thermal Engineering2214-157X2025-01-016510566110.1016/j.csite.2024.105661Study on the displacement and stress variation of frozen curtain during excavation of subway cross passageJunhao Chen0Zebiao You1Jianlin Wang2School of Civil Engineering, Fujian University of Technology, Fuzhou, 350118, China; Key Laboratory of Underground Engineering, Fujian Province University, Fuzhou, 350118, China; Corresponding author. School of Civil Engineering, Fujian University of Technology, Fuzhou, 350118, China.School of Civil Engineering, Fujian University of Technology, Fuzhou, 350118, China; Key Laboratory of Underground Engineering, Fujian Province University, Fuzhou, 350118, ChinaSchool of Civil Engineering, Fujian University of Technology, Fuzhou, 350118, China; Key Laboratory of Underground Engineering, Fujian Province University, Fuzhou, 350118, ChinaUnderstanding the deformation behavior of the frozen curtain during excavation is crucial when employing artificial freezing methods in construction. This study uses indoor frozen soil experiments and numerical simulations to determine the compressive and flexural strengths of the frozen curtain, along with its displacement and stress variation patterns. Results show that lower freezing temperatures continuously increase uniaxial compressive strength, flexural strength, and elastic modulus of frozen soil, while Poisson's ratio decreases. Among the two soil types studied, silty interlayered with sand demonstrates greater compressive strength, flexural strength, and elastic modulus. Numerical simulation analysis indicates that the top of the frozen curtain experiences settlement during cross passage excavation, while the bottom exhibits uplift. The safety factors of the frozen curtain were validated and confirmed to be within safe limits. This study integrates frozen soil experiments and numerical simulations to offer guidance for future cross passage excavations and related engineering designs.http://www.sciencedirect.com/science/article/pii/S2214157X24016927Artificial ground freezing methodCompressive strengthFlexural strengthNumerical simulationFrozen curtain |
| spellingShingle | Junhao Chen Zebiao You Jianlin Wang Study on the displacement and stress variation of frozen curtain during excavation of subway cross passage Case Studies in Thermal Engineering Artificial ground freezing method Compressive strength Flexural strength Numerical simulation Frozen curtain |
| title | Study on the displacement and stress variation of frozen curtain during excavation of subway cross passage |
| title_full | Study on the displacement and stress variation of frozen curtain during excavation of subway cross passage |
| title_fullStr | Study on the displacement and stress variation of frozen curtain during excavation of subway cross passage |
| title_full_unstemmed | Study on the displacement and stress variation of frozen curtain during excavation of subway cross passage |
| title_short | Study on the displacement and stress variation of frozen curtain during excavation of subway cross passage |
| title_sort | study on the displacement and stress variation of frozen curtain during excavation of subway cross passage |
| topic | Artificial ground freezing method Compressive strength Flexural strength Numerical simulation Frozen curtain |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24016927 |
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