Evolution Law of Longitudinal Deformation Curve and Release Coefficient of Viscoelastic Rock
Conventional elastic solutions cannot explain the deformation characteristics of soft rock tunnels exhibiting creep behavior. Therefore, a Burgers model is introduced to demonstrate the space-time effects in the construction period of soft rock tunnel. The influences of different factors on the long...
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Editorial Office of Journal of Shanghai Jiao Tong University
2025-04-01
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| Series: | Shanghai Jiaotong Daxue xuebao |
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| Online Access: | https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-4-513.shtml |
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| author | WANG Jiachen, MENG Lingzan, ZHANG Dingli, LU Song, WEN Ming |
| author_facet | WANG Jiachen, MENG Lingzan, ZHANG Dingli, LU Song, WEN Ming |
| author_sort | WANG Jiachen, MENG Lingzan, ZHANG Dingli, LU Song, WEN Ming |
| collection | DOAJ |
| description | Conventional elastic solutions cannot explain the deformation characteristics of soft rock tunnels exhibiting creep behavior. Therefore, a Burgers model is introduced to demonstrate the space-time effects in the construction period of soft rock tunnel. The influences of different factors on the longitudinal deformation behavior of viscoelastic rock as well as the spatiotemporal evolution patterns have been revealed through numerical simulations. An empirical formula for the displacement release coefficient is derived using the response surface method. The feasibility of the proposed method is validated by comparing the results with on-site monitoring data and other theoretical values. The findings indicate that geostress has a negligible effect on the displacement release coefficient. In constrast, the Kelvin shear modulus, viscosity coefficient, Maxwell shear modulus, and excavation speed significantly affect the displacement release coefficient. According to viscosity time, the hysteresis coefficient can be divided into three categories: low, medium, and high. Empirical formulas are fitted for the longitudinal deformation curve, including time, spatial, and spatiotemporal factors. The research conclusion can provide a more convenient method for predicting the deformation of soft rock tunnels. |
| format | Article |
| id | doaj-art-8c64e63d29184d8c8b5be36e500cf4c2 |
| institution | OA Journals |
| issn | 1006-2467 |
| language | zho |
| publishDate | 2025-04-01 |
| publisher | Editorial Office of Journal of Shanghai Jiao Tong University |
| record_format | Article |
| series | Shanghai Jiaotong Daxue xuebao |
| spelling | doaj-art-8c64e63d29184d8c8b5be36e500cf4c22025-08-20T01:49:02ZzhoEditorial Office of Journal of Shanghai Jiao Tong UniversityShanghai Jiaotong Daxue xuebao1006-24672025-04-0159451352410.16183/j.cnki.jsjtu.2023.350Evolution Law of Longitudinal Deformation Curve and Release Coefficient of Viscoelastic RockWANG Jiachen, MENG Lingzan, ZHANG Dingli, LU Song, WEN Ming01. Key Laboratory for Urban Underground Engineering of the Ministry of Education, Beijing Jiaotong University, Beijing 100044, China;2. Beijing Engineering Research Center of Track Structure, Beijing Urban Construction Design and Development Group Co., Ltd., Beijing 100037, China;3. Urban Operation Safety Research Center, Beijing Academy of Emergency Management Science and Technology, Beijing 101101, ChinaConventional elastic solutions cannot explain the deformation characteristics of soft rock tunnels exhibiting creep behavior. Therefore, a Burgers model is introduced to demonstrate the space-time effects in the construction period of soft rock tunnel. The influences of different factors on the longitudinal deformation behavior of viscoelastic rock as well as the spatiotemporal evolution patterns have been revealed through numerical simulations. An empirical formula for the displacement release coefficient is derived using the response surface method. The feasibility of the proposed method is validated by comparing the results with on-site monitoring data and other theoretical values. The findings indicate that geostress has a negligible effect on the displacement release coefficient. In constrast, the Kelvin shear modulus, viscosity coefficient, Maxwell shear modulus, and excavation speed significantly affect the displacement release coefficient. According to viscosity time, the hysteresis coefficient can be divided into three categories: low, medium, and high. Empirical formulas are fitted for the longitudinal deformation curve, including time, spatial, and spatiotemporal factors. The research conclusion can provide a more convenient method for predicting the deformation of soft rock tunnels.https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-4-513.shtmlviscoelasticitylongitudinal deformation profilesoft rock tunneltime-space effectdisplacement release coefficient |
| spellingShingle | WANG Jiachen, MENG Lingzan, ZHANG Dingli, LU Song, WEN Ming Evolution Law of Longitudinal Deformation Curve and Release Coefficient of Viscoelastic Rock Shanghai Jiaotong Daxue xuebao viscoelasticity longitudinal deformation profile soft rock tunnel time-space effect displacement release coefficient |
| title | Evolution Law of Longitudinal Deformation Curve and Release Coefficient of Viscoelastic Rock |
| title_full | Evolution Law of Longitudinal Deformation Curve and Release Coefficient of Viscoelastic Rock |
| title_fullStr | Evolution Law of Longitudinal Deformation Curve and Release Coefficient of Viscoelastic Rock |
| title_full_unstemmed | Evolution Law of Longitudinal Deformation Curve and Release Coefficient of Viscoelastic Rock |
| title_short | Evolution Law of Longitudinal Deformation Curve and Release Coefficient of Viscoelastic Rock |
| title_sort | evolution law of longitudinal deformation curve and release coefficient of viscoelastic rock |
| topic | viscoelasticity longitudinal deformation profile soft rock tunnel time-space effect displacement release coefficient |
| url | https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-4-513.shtml |
| work_keys_str_mv | AT wangjiachenmenglingzanzhangdinglilusongwenming evolutionlawoflongitudinaldeformationcurveandreleasecoefficientofviscoelasticrock |