Structural stability analysis and deformation control of constraint-anchorage support system in soft rock mass tunnel
The primary support of the soft rock mass tunnel is prone to lose its bearing capacity in advance due to the buckling instability. To solve it, the buckling critical load formula was derived in combination with structural stability theory. It is found that the stability can be improved by strengthen...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-08-01
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| Series: | Ain Shams Engineering Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2090447922003641 |
| _version_ | 1827947434943184896 |
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| author | Jianxun Chen Lixin Zhang Lijun Chen Yanbin Luo Huijie Guo Tantan Zhu |
| author_facet | Jianxun Chen Lixin Zhang Lijun Chen Yanbin Luo Huijie Guo Tantan Zhu |
| author_sort | Jianxun Chen |
| collection | DOAJ |
| description | The primary support of the soft rock mass tunnel is prone to lose its bearing capacity in advance due to the buckling instability. To solve it, the buckling critical load formula was derived in combination with structural stability theory. It is found that the stability can be improved by strengthening or increasing the constraint conditions for the structure. Consequently, a constraint-anchorage support system was proposed inspired by this conclusion. It provides effective constraints for the primary support by anchoring the pipes in deep rock mass with grouting high-performance material, and connecting with the primary support by I-beam connector. Reasonable support parameters were presented by analyzing the influence of support parameters on the deformation and stress of the tunnel structure. Finally, this support system was applied to the actual the tunnel construction. It was found that the stability of the primary support was improved and the tunnel deformation was effectively controlled. |
| first_indexed | 2024-04-09T12:39:57Z |
| format | Article |
| id | doaj.art-8d8e87e52fea4c9fa14bf1122c91e6cf |
| institution | Directory Open Access Journal |
| issn | 2090-4479 |
| language | English |
| last_indexed | 2024-04-09T12:39:57Z |
| publishDate | 2023-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ain Shams Engineering Journal |
| spelling | doaj.art-8d8e87e52fea4c9fa14bf1122c91e6cf2023-05-15T04:14:19ZengElsevierAin Shams Engineering Journal2090-44792023-08-01148102053Structural stability analysis and deformation control of constraint-anchorage support system in soft rock mass tunnelJianxun Chen0Lixin Zhang1Lijun Chen2Yanbin Luo3Huijie Guo4Tantan Zhu5School of Highway, Chang’an University, Xi’an 710064, Shaanxi, ChinaCorresponding author.; School of Highway, Chang’an University, Xi’an 710064, Shaanxi, ChinaSchool of Highway, Chang’an University, Xi’an 710064, Shaanxi, ChinaSchool of Highway, Chang’an University, Xi’an 710064, Shaanxi, ChinaSchool of Highway, Chang’an University, Xi’an 710064, Shaanxi, ChinaSchool of Highway, Chang’an University, Xi’an 710064, Shaanxi, ChinaThe primary support of the soft rock mass tunnel is prone to lose its bearing capacity in advance due to the buckling instability. To solve it, the buckling critical load formula was derived in combination with structural stability theory. It is found that the stability can be improved by strengthening or increasing the constraint conditions for the structure. Consequently, a constraint-anchorage support system was proposed inspired by this conclusion. It provides effective constraints for the primary support by anchoring the pipes in deep rock mass with grouting high-performance material, and connecting with the primary support by I-beam connector. Reasonable support parameters were presented by analyzing the influence of support parameters on the deformation and stress of the tunnel structure. Finally, this support system was applied to the actual the tunnel construction. It was found that the stability of the primary support was improved and the tunnel deformation was effectively controlled.http://www.sciencedirect.com/science/article/pii/S2090447922003641Tunnel engineeringSoft rock massInstability failureConstraint-anchorage support systemDeformation control |
| spellingShingle | Jianxun Chen Lixin Zhang Lijun Chen Yanbin Luo Huijie Guo Tantan Zhu Structural stability analysis and deformation control of constraint-anchorage support system in soft rock mass tunnel Ain Shams Engineering Journal Tunnel engineering Soft rock mass Instability failure Constraint-anchorage support system Deformation control |
| title | Structural stability analysis and deformation control of constraint-anchorage support system in soft rock mass tunnel |
| title_full | Structural stability analysis and deformation control of constraint-anchorage support system in soft rock mass tunnel |
| title_fullStr | Structural stability analysis and deformation control of constraint-anchorage support system in soft rock mass tunnel |
| title_full_unstemmed | Structural stability analysis and deformation control of constraint-anchorage support system in soft rock mass tunnel |
| title_short | Structural stability analysis and deformation control of constraint-anchorage support system in soft rock mass tunnel |
| title_sort | structural stability analysis and deformation control of constraint anchorage support system in soft rock mass tunnel |
| topic | Tunnel engineering Soft rock mass Instability failure Constraint-anchorage support system Deformation control |
| url | http://www.sciencedirect.com/science/article/pii/S2090447922003641 |
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