Estimating the Basal Heave Stability of Narrow Braced Excavations
Engineering practices indicate that narrow braced excavation exhibits a clear size effect. However, the slip circle method in the design codes fails to consider the effect of excavation width on basal heave stability, causing waste for narrow excavation. In this paper, numerical simulation for basal...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/8996831 |
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| _version_ | 1832564508179038208 |
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| author | Taoli Xiao Yanlu Yang Hua Cai Shaoxin Yan Fang Cao |
| author_facet | Taoli Xiao Yanlu Yang Hua Cai Shaoxin Yan Fang Cao |
| author_sort | Taoli Xiao |
| collection | DOAJ |
| description | Engineering practices indicate that narrow braced excavation exhibits a clear size effect. However, the slip circle method in the design codes fails to consider the effect of excavation width on basal heave stability, causing waste for narrow excavation. In this paper, numerical simulation for basal heave failure of excavation with different widths was performed by FEM with SSRT (shear strength reduction technique). The results revealed that the failure mechanism of narrow excavation is different from the complete slip circle mode. In addition, the safety factor decreases increasingly slowly as the excavation widens and stabilizes when approaching the critical width. Subsequently, the corresponding computation model was presented, and an improved SCM (slip circle method) was further developed. Finally, the engineering case illustrated that it can effectively optimize the design, which exhibits clear superiority. |
| format | Article |
| id | doaj-art-df2b7a6d017f496680964e436f72f84f |
| institution | Kabale University |
| issn | 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-df2b7a6d017f496680964e436f72f84f2025-02-03T01:10:53ZengWileyShock and Vibration1875-92032021-01-01202110.1155/2021/8996831Estimating the Basal Heave Stability of Narrow Braced ExcavationsTaoli Xiao0Yanlu Yang1Hua Cai2Shaoxin Yan3Fang Cao4State Key Laboratory of Geomechanics and Geotechnical EngineeringSinopec Yantai LNG Co., LtdBureau of Housing and Urban-Rural Development in JingzhouJianghan Construction Projects Working Drawings Review Office in JingzhouJianghan Construction Projects Working Drawings Review Office in JingzhouEngineering practices indicate that narrow braced excavation exhibits a clear size effect. However, the slip circle method in the design codes fails to consider the effect of excavation width on basal heave stability, causing waste for narrow excavation. In this paper, numerical simulation for basal heave failure of excavation with different widths was performed by FEM with SSRT (shear strength reduction technique). The results revealed that the failure mechanism of narrow excavation is different from the complete slip circle mode. In addition, the safety factor decreases increasingly slowly as the excavation widens and stabilizes when approaching the critical width. Subsequently, the corresponding computation model was presented, and an improved SCM (slip circle method) was further developed. Finally, the engineering case illustrated that it can effectively optimize the design, which exhibits clear superiority.http://dx.doi.org/10.1155/2021/8996831 |
| spellingShingle | Taoli Xiao Yanlu Yang Hua Cai Shaoxin Yan Fang Cao Estimating the Basal Heave Stability of Narrow Braced Excavations Shock and Vibration |
| title | Estimating the Basal Heave Stability of Narrow Braced Excavations |
| title_full | Estimating the Basal Heave Stability of Narrow Braced Excavations |
| title_fullStr | Estimating the Basal Heave Stability of Narrow Braced Excavations |
| title_full_unstemmed | Estimating the Basal Heave Stability of Narrow Braced Excavations |
| title_short | Estimating the Basal Heave Stability of Narrow Braced Excavations |
| title_sort | estimating the basal heave stability of narrow braced excavations |
| url | http://dx.doi.org/10.1155/2021/8996831 |
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