Experimental Analysis of Deformation Mechanics and Stability of a Shallow-Buried Large-Span Hard Rock Metro Station
Based on a certain Qingdao metro station, a large-scale three-dimensional model test has been carried out to investigate the stability of the surrounding rock masses (hard rock) and a large-span metro station under different excavation methods and technologies. The model test includes an entire sect...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/4031306 |
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| _version_ | 1832555080745746432 |
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| author | Wei Li Jiwen Bai Kexian Li Shijie Zhang |
| author_facet | Wei Li Jiwen Bai Kexian Li Shijie Zhang |
| author_sort | Wei Li |
| collection | DOAJ |
| description | Based on a certain Qingdao metro station, a large-scale three-dimensional model test has been carried out to investigate the stability of the surrounding rock masses (hard rock) and a large-span metro station under different excavation methods and technologies. The model test includes an entire section excavation, an arch-cover excavation, and a primary support arch-cover excavation. Compared with the entire section excavation, the primary support arch-cover method can effectively control the vault settlement and clearance convergence deformation of the surrounding rock masses, reducing them by 15–30%. The deformation itself goes through three stages: slow, abrupt, and stable. The excavation of the “middle hole” creates a drastic change in the tunnel vault during the arch-cover excavation; however, the timely application of supports can effectively constrain the range of disturbance caused by the excavation and weaken the degree of load agglomeration of the surrounding rock masses. |
| format | Article |
| id | doaj-art-dd01cbec78da471aa0b56f87fd823c70 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-dd01cbec78da471aa0b56f87fd823c702025-02-03T05:49:38ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/40313064031306Experimental Analysis of Deformation Mechanics and Stability of a Shallow-Buried Large-Span Hard Rock Metro StationWei Li0Jiwen Bai1Kexian Li2Shijie Zhang3Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, ChinaResearch Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, ChinaQingdao Metro Group Corporation, Qingdao, Shandong 266000, ChinaChina Railway Academy Co., Ltd., Chengdu, Sichuan 611731, ChinaBased on a certain Qingdao metro station, a large-scale three-dimensional model test has been carried out to investigate the stability of the surrounding rock masses (hard rock) and a large-span metro station under different excavation methods and technologies. The model test includes an entire section excavation, an arch-cover excavation, and a primary support arch-cover excavation. Compared with the entire section excavation, the primary support arch-cover method can effectively control the vault settlement and clearance convergence deformation of the surrounding rock masses, reducing them by 15–30%. The deformation itself goes through three stages: slow, abrupt, and stable. The excavation of the “middle hole” creates a drastic change in the tunnel vault during the arch-cover excavation; however, the timely application of supports can effectively constrain the range of disturbance caused by the excavation and weaken the degree of load agglomeration of the surrounding rock masses.http://dx.doi.org/10.1155/2020/4031306 |
| spellingShingle | Wei Li Jiwen Bai Kexian Li Shijie Zhang Experimental Analysis of Deformation Mechanics and Stability of a Shallow-Buried Large-Span Hard Rock Metro Station Advances in Civil Engineering |
| title | Experimental Analysis of Deformation Mechanics and Stability of a Shallow-Buried Large-Span Hard Rock Metro Station |
| title_full | Experimental Analysis of Deformation Mechanics and Stability of a Shallow-Buried Large-Span Hard Rock Metro Station |
| title_fullStr | Experimental Analysis of Deformation Mechanics and Stability of a Shallow-Buried Large-Span Hard Rock Metro Station |
| title_full_unstemmed | Experimental Analysis of Deformation Mechanics and Stability of a Shallow-Buried Large-Span Hard Rock Metro Station |
| title_short | Experimental Analysis of Deformation Mechanics and Stability of a Shallow-Buried Large-Span Hard Rock Metro Station |
| title_sort | experimental analysis of deformation mechanics and stability of a shallow buried large span hard rock metro station |
| url | http://dx.doi.org/10.1155/2020/4031306 |
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