Centrifuge and numerical modelling of tunnel intersected by normal fault rupture in sand
| Autor: | Charles Wang Wai Ng, J.M. Peng, Jiangwei Shi, Qipeng Cai, Xingxin Chen |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Centrifuge
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Geotechnical Engineering and Engineering Geology Physics::Geophysics Computer Science Applications Deformation mechanism Condensed Matter::Superconductivity Electromagnetic shielding Free boundary condition Geotechnical engineering Boundary value problem Normal fault Geology Stratum |
| Zdroj: | Computers and Geotechnics. 111:137-146 |
| ISSN: | 0266-352X |
| DOI: | 10.1016/j.compgeo.2019.03.010 |
| Popis: | In this study, centrifuge model tests and numerical analyses were conducted to investigate the deformation mechanisms of an existing tunnel due to normal faulting in sand. With the presence of a tunnel in sand stratum, normal faulting-induced ground surface settlements above the existing tunnel were significantly reduced (i.e., shielding effects). These shielding effects provide by the existing tunnel were decreased with the tunnel burial depth. When a kinematically constrained boundary condition was applied in the tunnel, the induced longitudinal strains at the tunnel crown were much larger than those observed in a tunnel with a free boundary condition. |
| Databáze: | OpenAIRE |
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