| 胡阿平,孙望成,尹华东,朱远嫘,蒋瑾.考虑土体剪胀性的盾构倾斜隧道开挖面稳定性分析[J].南华大学学报(自然科学版),2022,(2):70~76.[HU Aping,SUN Wangcheng,YIN Huadong,ZHU Yuanlei,JIANG Jin.Stability Analysis of Excavation Face of Shield Inclined Tunnel Considering Soil Dilatancy[J].Journal of University of South China(Science and Technology),2022,(2):70~76.] |
| 考虑土体剪胀性的盾构倾斜隧道开挖面稳定性分析 |
| Stability Analysis of Excavation Face of Shield Inclined Tunnel Considering Soil Dilatancy |
| 投稿时间：2021-11-04 |
| DOI： |
| 中文关键词: 倾斜隧道开挖面 土体剪胀效应 非线性破坏准则 极限分析 |
| 英文关键词:inclined tunnel excavation surface soil dilatancy effect nonlinear failure criterion limit analysis |
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| 中文摘要: |
| 考虑土体剪胀效应的影响,对盾构倾斜隧道开挖面的稳定性进行研究。通过构建的盾构倾斜隧道开挖面破坏模式,结合非线性破坏准则和极限分析上限定理,推导出开挖面支护力的解析解,求解了开挖面的最优支护力及潜在破坏面。研究结果表明,隧道倾角α小幅度变化时对支护力的影响较小,而非线性系数m和剪胀系数η对支护力影响较大。隧道倾角α,非线性系数m和剪胀系数η对潜在破坏面影响较为显著。 |
| 英文摘要: |
| Considering the effect of soil dilatancy, the stability of the excavation surface of the shield inclined tunnel was studied. Based on the failure mode of the shield inclined tunnel excavation surface, the analytical solution of the excavation face support force is derived by combining the nonlinear failure criterion and the upper bound theorem of limit analysis. The research results show that a small change in the tunnel inclination angle α has a small effect on the supporting force, while the nonlinear coefficient m and the dilatancy coefficient η have a greater impact on the supporting force. The tunnel inclination α, the nonlinear coefficient m and the dilatancy coefficient η have significant effects on the potential failure surface. |
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