Influence of skirt reinforcement in passive zone on deformation of excavation
In the design of the excavation protection scheme in the soft soil area, it is often necessary to set up cement-soil mixing piles in the passive area. In this way, the stability requirements of the excavation can be met, and the lateral displacement of the retaining pile can be greatly restricted. T...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2020-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/58/e3sconf_isceg2020_02012.pdf |
| _version_ | 1818945428377305088 |
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| author | CHEN Peng-fei GONG Xiao-nan |
| author_facet | CHEN Peng-fei GONG Xiao-nan |
| author_sort | CHEN Peng-fei |
| collection | DOAJ |
| description | In the design of the excavation protection scheme in the soft soil area, it is often necessary to set up cement-soil mixing piles in the passive area. In this way, the stability requirements of the excavation can be met, and the lateral displacement of the retaining pile can be greatly restricted. This paper uses PLAXIS 3D to establish a excavation model in a soft area, and discusses the influence of various parameters of the passive zone mixing pile on the deformation and force of the excavation. Within a certain range, as the cohesive force or secant modulus or reinforcement width or depth of the reinforcement area increases, the lateral displacement and settlement outside the pit will decrease. But when it exceeds a certain range, the decreasing trend becomes very slow. With the increase of the four parameters of the reinforcement zone, bending moments in opposite directions appear below the bottom of the excavation. Moreover, the value of the bending moment is getting larger and larger. Therefore, considering the force, it is not that the wider and deeper the reinforced zone is, the more advantageous is. |
| first_indexed | 2024-12-20T07:58:57Z |
| format | Article |
| id | doaj.art-47817e7e8fc14083a3bf5f22dc37a198 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-12-20T07:58:57Z |
| publishDate | 2020-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-47817e7e8fc14083a3bf5f22dc37a1982022-12-21T19:47:34ZengEDP SciencesE3S Web of Conferences2267-12422020-01-011980201210.1051/e3sconf/202019802012e3sconf_isceg2020_02012Influence of skirt reinforcement in passive zone on deformation of excavationCHEN Peng-fei0GONG Xiao-nan1Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang UniversityResearch Center of Coastal and Urban Geotechnical Engineering, Zhejiang UniversityIn the design of the excavation protection scheme in the soft soil area, it is often necessary to set up cement-soil mixing piles in the passive area. In this way, the stability requirements of the excavation can be met, and the lateral displacement of the retaining pile can be greatly restricted. This paper uses PLAXIS 3D to establish a excavation model in a soft area, and discusses the influence of various parameters of the passive zone mixing pile on the deformation and force of the excavation. Within a certain range, as the cohesive force or secant modulus or reinforcement width or depth of the reinforcement area increases, the lateral displacement and settlement outside the pit will decrease. But when it exceeds a certain range, the decreasing trend becomes very slow. With the increase of the four parameters of the reinforcement zone, bending moments in opposite directions appear below the bottom of the excavation. Moreover, the value of the bending moment is getting larger and larger. Therefore, considering the force, it is not that the wider and deeper the reinforced zone is, the more advantageous is.https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/58/e3sconf_isceg2020_02012.pdf |
| spellingShingle | CHEN Peng-fei GONG Xiao-nan Influence of skirt reinforcement in passive zone on deformation of excavation E3S Web of Conferences |
| title | Influence of skirt reinforcement in passive zone on deformation of excavation |
| title_full | Influence of skirt reinforcement in passive zone on deformation of excavation |
| title_fullStr | Influence of skirt reinforcement in passive zone on deformation of excavation |
| title_full_unstemmed | Influence of skirt reinforcement in passive zone on deformation of excavation |
| title_short | Influence of skirt reinforcement in passive zone on deformation of excavation |
| title_sort | influence of skirt reinforcement in passive zone on deformation of excavation |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/58/e3sconf_isceg2020_02012.pdf |
| work_keys_str_mv | AT chenpengfei influenceofskirtreinforcementinpassivezoneondeformationofexcavation AT gongxiaonan influenceofskirtreinforcementinpassivezoneondeformationofexcavation |