The Impact of Different Excavation Support Structures on the Deformation and Stability of Adjacent Station and Tunnels
This study uses the finite element software Midas GTS NX (2019), combined with actual engineering projects, to establish numerical models and analyze the impact of different support types (pile-anchor support and double-row pile support) on the excavation of foundation pits near metro station tunnel...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-02-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/15/3/493 |
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| author | Zhitong Mao Tian Ding Fengchao Hu Shuaihua Ye Linzhao Ding Xiaoning Zhang Peiqiang Li Nianxiang Li |
| author_facet | Zhitong Mao Tian Ding Fengchao Hu Shuaihua Ye Linzhao Ding Xiaoning Zhang Peiqiang Li Nianxiang Li |
| author_sort | Zhitong Mao |
| collection | DOAJ |
| description | This study uses the finite element software Midas GTS NX (2019), combined with actual engineering projects, to establish numerical models and analyze the impact of different support types (pile-anchor support and double-row pile support) on the excavation of foundation pits near metro station tunnels. The results indicate that under both support methods, the vertical displacement of the tunnel is the greatest at the interface between the station and the tunnel, with greater vertical displacement occurring under double-row pile support. Under pile-anchor support, the horizontal displacement of the tunnel reaches its maximum value during the sixth excavation stage, while under double-row pile support, the horizontal displacement increases steadily, and the overall displacement is small. The horizontal displacement under pile-anchor support is significantly greater than that under double-row pile support. For the station, the maximum vertical displacement under pile-anchor support is smaller than that under double-row pile support. The horizontal displacement under pile-anchor support exhibits a linear change, while under double-row pile support, the displacement continuously increases from the end of the foundation pit farther from the excavation to the end closer to it. The model tests are consistent with the numerical simulation results, verifying the correctness of the numerical simulation. This study can provide references for relevant engineering projects to ensure the safety and stability of metro structures. |
| format | Article |
| id | doaj-art-422e9cc77a5a4758be309accc8c80a67 |
| institution | DOAJ |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-422e9cc77a5a4758be309accc8c80a672025-08-20T02:48:02ZengMDPI AGBuildings2075-53092025-02-0115349310.3390/buildings15030493The Impact of Different Excavation Support Structures on the Deformation and Stability of Adjacent Station and TunnelsZhitong Mao0Tian Ding1Fengchao Hu2Shuaihua Ye3Linzhao Ding4Xiaoning Zhang5Peiqiang Li6Nianxiang Li7Gansu Construction Investment (Holdings) Group Co., Ltd., Lanzhou 730050, ChinaGansu Construction Investment (Holdings) Group Co., Ltd., Lanzhou 730050, ChinaGansu Construction Investment (Holdings) Group Co., Ltd., Lanzhou 730050, ChinaSchool of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Civil Engineering, Shandong University, Jinan 250061, ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, ChinaSchool of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaThis study uses the finite element software Midas GTS NX (2019), combined with actual engineering projects, to establish numerical models and analyze the impact of different support types (pile-anchor support and double-row pile support) on the excavation of foundation pits near metro station tunnels. The results indicate that under both support methods, the vertical displacement of the tunnel is the greatest at the interface between the station and the tunnel, with greater vertical displacement occurring under double-row pile support. Under pile-anchor support, the horizontal displacement of the tunnel reaches its maximum value during the sixth excavation stage, while under double-row pile support, the horizontal displacement increases steadily, and the overall displacement is small. The horizontal displacement under pile-anchor support is significantly greater than that under double-row pile support. For the station, the maximum vertical displacement under pile-anchor support is smaller than that under double-row pile support. The horizontal displacement under pile-anchor support exhibits a linear change, while under double-row pile support, the displacement continuously increases from the end of the foundation pit farther from the excavation to the end closer to it. The model tests are consistent with the numerical simulation results, verifying the correctness of the numerical simulation. This study can provide references for relevant engineering projects to ensure the safety and stability of metro structures.https://www.mdpi.com/2075-5309/15/3/493foundation pit excavationmetro station tunnelsupport structureMidas GTS NXscaled model test |
| spellingShingle | Zhitong Mao Tian Ding Fengchao Hu Shuaihua Ye Linzhao Ding Xiaoning Zhang Peiqiang Li Nianxiang Li The Impact of Different Excavation Support Structures on the Deformation and Stability of Adjacent Station and Tunnels Buildings foundation pit excavation metro station tunnel support structure Midas GTS NX scaled model test |
| title | The Impact of Different Excavation Support Structures on the Deformation and Stability of Adjacent Station and Tunnels |
| title_full | The Impact of Different Excavation Support Structures on the Deformation and Stability of Adjacent Station and Tunnels |
| title_fullStr | The Impact of Different Excavation Support Structures on the Deformation and Stability of Adjacent Station and Tunnels |
| title_full_unstemmed | The Impact of Different Excavation Support Structures on the Deformation and Stability of Adjacent Station and Tunnels |
| title_short | The Impact of Different Excavation Support Structures on the Deformation and Stability of Adjacent Station and Tunnels |
| title_sort | impact of different excavation support structures on the deformation and stability of adjacent station and tunnels |
| topic | foundation pit excavation metro station tunnel support structure Midas GTS NX scaled model test |
| url | https://www.mdpi.com/2075-5309/15/3/493 |
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