The reliability of cold region tunnels considering deterioration of the insulation layer.
Frost heave is a most common form of tunnel defect in cold regions. Installing an insulation layer is a key solution. However, the insulation layer deteriorates with freeze-thaw cycles and temperature changes. These significantly impact tunnel reliability in these areas. To determine the influence o...
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2025-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0320201 |
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| author | Jianqing Jia Shaohua An Victor O Tenorio |
| author_facet | Jianqing Jia Shaohua An Victor O Tenorio |
| author_sort | Jianqing Jia |
| collection | DOAJ |
| description | Frost heave is a most common form of tunnel defect in cold regions. Installing an insulation layer is a key solution. However, the insulation layer deteriorates with freeze-thaw cycles and temperature changes. These significantly impact tunnel reliability in these areas. To determine the influence of insulation layer deterioration and temperature change to reliability of cold region tunnel, this paper examines a tunnel in the Qinghai-Tibet Plateau. It uses projected temperature increases of 2.6 °C and 4 °C over the next 50 years as boundary conditions. The study analyzes the evolution of freeze-thaw thickness, temperature fields, and stress fields in the surrounding rock. It considers both scenarios: with and without insulation layer deterioration. Using the Monte-Carlo method, the study investigates the variation in tunnel reliability. The results indicate that, with insulation layer deterioration, freeze-thaw thickness, temperature fields, and stress fields in the surrounding rock increase under both temperature scenarios. Consequently, tunnel reliability decreases. Specifically, with temperature increases of 2.6 °C and 4 °C, tunnel reliability decreases by approximately 4.5% and 6.3%, respectively, when considering insulation layer deterioration. |
| format | Article |
| id | doaj-art-db270f6a2ea74577b116729dc2e62b15 |
| institution | OA Journals |
| issn | 1932-6203 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj-art-db270f6a2ea74577b116729dc2e62b152025-08-20T02:08:24ZengPublic Library of Science (PLoS)PLoS ONE1932-62032025-01-01204e032020110.1371/journal.pone.0320201The reliability of cold region tunnels considering deterioration of the insulation layer.Jianqing JiaShaohua AnVictor O TenorioFrost heave is a most common form of tunnel defect in cold regions. Installing an insulation layer is a key solution. However, the insulation layer deteriorates with freeze-thaw cycles and temperature changes. These significantly impact tunnel reliability in these areas. To determine the influence of insulation layer deterioration and temperature change to reliability of cold region tunnel, this paper examines a tunnel in the Qinghai-Tibet Plateau. It uses projected temperature increases of 2.6 °C and 4 °C over the next 50 years as boundary conditions. The study analyzes the evolution of freeze-thaw thickness, temperature fields, and stress fields in the surrounding rock. It considers both scenarios: with and without insulation layer deterioration. Using the Monte-Carlo method, the study investigates the variation in tunnel reliability. The results indicate that, with insulation layer deterioration, freeze-thaw thickness, temperature fields, and stress fields in the surrounding rock increase under both temperature scenarios. Consequently, tunnel reliability decreases. Specifically, with temperature increases of 2.6 °C and 4 °C, tunnel reliability decreases by approximately 4.5% and 6.3%, respectively, when considering insulation layer deterioration.https://doi.org/10.1371/journal.pone.0320201 |
| spellingShingle | Jianqing Jia Shaohua An Victor O Tenorio The reliability of cold region tunnels considering deterioration of the insulation layer. PLoS ONE |
| title | The reliability of cold region tunnels considering deterioration of the insulation layer. |
| title_full | The reliability of cold region tunnels considering deterioration of the insulation layer. |
| title_fullStr | The reliability of cold region tunnels considering deterioration of the insulation layer. |
| title_full_unstemmed | The reliability of cold region tunnels considering deterioration of the insulation layer. |
| title_short | The reliability of cold region tunnels considering deterioration of the insulation layer. |
| title_sort | reliability of cold region tunnels considering deterioration of the insulation layer |
| url | https://doi.org/10.1371/journal.pone.0320201 |
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