Interactions of Foundation Pit on the Underlying Adjacent Existing Underground Structures
The influence of foundation pit excavation on deformation and stability of the supporting structure of underlying adjacent existing tunnel is a comprehensive geotechnical engineering problem, including unloading effect of foundation pit excavation and the coupling effect of deformation of the tunnel...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2022/5675173 |
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| _version_ | 1832552892651798528 |
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| author | Wanzhong Xu Baohua Liu Jingshuo Liu Chun Guo |
| author_facet | Wanzhong Xu Baohua Liu Jingshuo Liu Chun Guo |
| author_sort | Wanzhong Xu |
| collection | DOAJ |
| description | The influence of foundation pit excavation on deformation and stability of the supporting structure of underlying adjacent existing tunnel is a comprehensive geotechnical engineering problem, including unloading effect of foundation pit excavation and the coupling effect of deformation of the tunnel surrounding rock and supporting structure. Using numerical calculation methods, this paper changes the different excavation depths and widths of foundation pit and discusses the evolution law about force and deformation of tunnel supporting structure, and the changing relationship of the axial force of tunnel anchor with the distance between foundation pit and tunnel is obtained and compares the influence of different excavation way of foundation pit on the axial force of anchor rod near the existing tunnel. It is found that with the increase of distance between foundation pit and tunnel, the axial force of anchor rod at the top of tunnel under the foundation pit entirely symbolizes a trend of increases first and then decreases, the axial force of the leftmost anchor rod changes from pressure to tension, then decreases gradually. When the foundation pit depth increases, the axial force of the anchor rod at the top of the tunnel increases, the axial force of the leftmost anchor rod decreases, and the width of foundation pit absolutely has little effect on the axial force of the leftmost and the top tunnel. |
| format | Article |
| id | doaj-art-0972a9644beb4b2b873ecff419ba5a6f |
| institution | Kabale University |
| issn | 1468-8123 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-0972a9644beb4b2b873ecff419ba5a6f2025-02-03T05:57:27ZengWileyGeofluids1468-81232022-01-01202210.1155/2022/5675173Interactions of Foundation Pit on the Underlying Adjacent Existing Underground StructuresWanzhong Xu0Baohua Liu1Jingshuo Liu2Chun Guo3College of Land and Resource EngineeringSchool of Resources and Safety EngineeringHunan Polytechnic of Water Resources and Electric PowerSchool of Resources and Safety EngineeringThe influence of foundation pit excavation on deformation and stability of the supporting structure of underlying adjacent existing tunnel is a comprehensive geotechnical engineering problem, including unloading effect of foundation pit excavation and the coupling effect of deformation of the tunnel surrounding rock and supporting structure. Using numerical calculation methods, this paper changes the different excavation depths and widths of foundation pit and discusses the evolution law about force and deformation of tunnel supporting structure, and the changing relationship of the axial force of tunnel anchor with the distance between foundation pit and tunnel is obtained and compares the influence of different excavation way of foundation pit on the axial force of anchor rod near the existing tunnel. It is found that with the increase of distance between foundation pit and tunnel, the axial force of anchor rod at the top of tunnel under the foundation pit entirely symbolizes a trend of increases first and then decreases, the axial force of the leftmost anchor rod changes from pressure to tension, then decreases gradually. When the foundation pit depth increases, the axial force of the anchor rod at the top of the tunnel increases, the axial force of the leftmost anchor rod decreases, and the width of foundation pit absolutely has little effect on the axial force of the leftmost and the top tunnel.http://dx.doi.org/10.1155/2022/5675173 |
| spellingShingle | Wanzhong Xu Baohua Liu Jingshuo Liu Chun Guo Interactions of Foundation Pit on the Underlying Adjacent Existing Underground Structures Geofluids |
| title | Interactions of Foundation Pit on the Underlying Adjacent Existing Underground Structures |
| title_full | Interactions of Foundation Pit on the Underlying Adjacent Existing Underground Structures |
| title_fullStr | Interactions of Foundation Pit on the Underlying Adjacent Existing Underground Structures |
| title_full_unstemmed | Interactions of Foundation Pit on the Underlying Adjacent Existing Underground Structures |
| title_short | Interactions of Foundation Pit on the Underlying Adjacent Existing Underground Structures |
| title_sort | interactions of foundation pit on the underlying adjacent existing underground structures |
| url | http://dx.doi.org/10.1155/2022/5675173 |
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