Characteristics and Calculation of Surrounding Rock Pressure in Tunnel Lining With Backward Voids
The distribution of surrounding rock pressure acting on the lining of a tunnel varies. This can cause stress concentration and accelerate lining deterioration that severely endangers the safety of tunnel operation. Owing to the complexity of the interaction between the lining and surrounding rock st...
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| Format: | Article |
| Language: | English |
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Wiley
2025-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/adce/5555355 |
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| author | Jingjian Bi Zengchuan Kou Ning Zhang Jian Liu Quanyi Xie Gaohang Lv |
| author_facet | Jingjian Bi Zengchuan Kou Ning Zhang Jian Liu Quanyi Xie Gaohang Lv |
| author_sort | Jingjian Bi |
| collection | DOAJ |
| description | The distribution of surrounding rock pressure acting on the lining of a tunnel varies. This can cause stress concentration and accelerate lining deterioration that severely endangers the safety of tunnel operation. Owing to the complexity of the interaction between the lining and surrounding rock structure as well as the diversity of cavities, no straightforward method for calculating the surrounding rock pressure has been devised. In this study, a mechanical model of the pressure exerted by surrounding rock on the lining under different cavity conditions is established based on commonly used structural forms of highway tunnels. Moreover, the calculation formula for pressure is derived using numerical simulation and theoretical analysis. The research results are as follows: The distribution characteristics of surrounding rock pressure on the lining are the same under different cavity conditions and the load concentration phenomenon occurs at the cavity edge. As the cavity deflection angle increases, the difference in pressure concentration between both sides of the cavity increases. Formulas for calculating the concentrated load acting on the lining due to the surrounding rock under symmetrical and asymmetrical cavity distribution conditions are derived based on the limit equilibrium theory; their maximum errors are 8.9% and 7.4% compared with numerical simulation results. The influence of cavity span and deflection angle on the concentrated load exerted by the surrounding rock is analyzed using the calculation formula. However, under different deflection angles and circumferential spans of the cavity behind the lining, the change in the concentrated load acting on the lining due to the surrounding rock pressure is nonlinear. With an increase in the span of the cavity at different positions, the concentrated load exerted by the surrounding rock reaches its maximum and the load change law considerably varies. |
| format | Article |
| id | doaj-art-ca850522dbe04dc3a0a0e7c97ed6cb37 |
| institution | Kabale University |
| issn | 1687-8094 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-ca850522dbe04dc3a0a0e7c97ed6cb372025-08-20T03:25:23ZengWileyAdvances in Civil Engineering1687-80942025-01-01202510.1155/adce/5555355Characteristics and Calculation of Surrounding Rock Pressure in Tunnel Lining With Backward VoidsJingjian Bi0Zengchuan Kou1Ning Zhang2Jian Liu3Quanyi Xie4Gaohang Lv5Shandong Express Group Co., Ltd.School of Qilu TransportationShandong Express Group Co., Ltd.School of Qilu TransportationSchool of Qilu TransportationSchool of Qilu TransportationThe distribution of surrounding rock pressure acting on the lining of a tunnel varies. This can cause stress concentration and accelerate lining deterioration that severely endangers the safety of tunnel operation. Owing to the complexity of the interaction between the lining and surrounding rock structure as well as the diversity of cavities, no straightforward method for calculating the surrounding rock pressure has been devised. In this study, a mechanical model of the pressure exerted by surrounding rock on the lining under different cavity conditions is established based on commonly used structural forms of highway tunnels. Moreover, the calculation formula for pressure is derived using numerical simulation and theoretical analysis. The research results are as follows: The distribution characteristics of surrounding rock pressure on the lining are the same under different cavity conditions and the load concentration phenomenon occurs at the cavity edge. As the cavity deflection angle increases, the difference in pressure concentration between both sides of the cavity increases. Formulas for calculating the concentrated load acting on the lining due to the surrounding rock under symmetrical and asymmetrical cavity distribution conditions are derived based on the limit equilibrium theory; their maximum errors are 8.9% and 7.4% compared with numerical simulation results. The influence of cavity span and deflection angle on the concentrated load exerted by the surrounding rock is analyzed using the calculation formula. However, under different deflection angles and circumferential spans of the cavity behind the lining, the change in the concentrated load acting on the lining due to the surrounding rock pressure is nonlinear. With an increase in the span of the cavity at different positions, the concentrated load exerted by the surrounding rock reaches its maximum and the load change law considerably varies.http://dx.doi.org/10.1155/adce/5555355 |
| spellingShingle | Jingjian Bi Zengchuan Kou Ning Zhang Jian Liu Quanyi Xie Gaohang Lv Characteristics and Calculation of Surrounding Rock Pressure in Tunnel Lining With Backward Voids Advances in Civil Engineering |
| title | Characteristics and Calculation of Surrounding Rock Pressure in Tunnel Lining With Backward Voids |
| title_full | Characteristics and Calculation of Surrounding Rock Pressure in Tunnel Lining With Backward Voids |
| title_fullStr | Characteristics and Calculation of Surrounding Rock Pressure in Tunnel Lining With Backward Voids |
| title_full_unstemmed | Characteristics and Calculation of Surrounding Rock Pressure in Tunnel Lining With Backward Voids |
| title_short | Characteristics and Calculation of Surrounding Rock Pressure in Tunnel Lining With Backward Voids |
| title_sort | characteristics and calculation of surrounding rock pressure in tunnel lining with backward voids |
| url | http://dx.doi.org/10.1155/adce/5555355 |
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