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DOI | 10.1007/s11069-021-04727-4 |
Research on subway shield tunnel induced by local water immersion of collapsible loess | |
Weng X.; Zhou R.; Rao W.; Wang D. | |
发表日期 | 2021 |
ISSN | 0921030X |
起始页码 | 1197 |
结束页码 | 1219 |
卷号 | 108期号:1 |
英文摘要 | There are an increasing number of cases wherein the soil around a tunnel is immersed in water, which adversely affects the tunnel. To study the influence mechanism of local immersion of loess stratum on metro shield tunnel in detail, a similarity model test and numerical simulation were used in this study. These were used to investigate the stress and deformation of tunnel lining and stratum and surface settlement after a local soil collapse in the tunnel, and the mechanical mechanism that causes this effect. Further, the influences of different methods of water immersion on the tunnel lining were studied using numerical simulation. The results showed that the larger the collapsing area, the larger the bending moment and the axial force increment of the tunnel lining and the surface settlement; the bending moment and axial force near the side of the collapsing area were larger than those of the non-wet side. Vertical stress in the collapsible area was reduced, while the vertical stress of the non-collapsible soil on both sides of the collapsible area was increased due to the transmission of stress. When the water immersion area was the same, different water immersion methods also made the internal force of the tunnel lining slightly different; however, the difference was not obvious. © 2021, The Author(s), under exclusive licence to Springer Nature B.V. |
关键词 | Collapsible loessLocal water immersionModel testNumerical simulationTunnel engineering |
英文关键词 | collapsible soil; computer simulation; deformation; force; immersed tunnel; loess; model test; stress; tunnel design; tunnel lining |
语种 | 英语 |
来源期刊 | Natural Hazards |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/206660 |
作者单位 | Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Xi’an, 710064, China |
推荐引用方式 GB/T 7714 | Weng X.,Zhou R.,Rao W.,et al. Research on subway shield tunnel induced by local water immersion of collapsible loess[J],2021,108(1). |
APA | Weng X.,Zhou R.,Rao W.,&Wang D..(2021).Research on subway shield tunnel induced by local water immersion of collapsible loess.Natural Hazards,108(1). |
MLA | Weng X.,et al."Research on subway shield tunnel induced by local water immersion of collapsible loess".Natural Hazards 108.1(2021). |
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