Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Influence Research on Pit Excavation Close to Existing Shield Tunnel
Pit excavation has a negative impact on the existing shield tunnel close to it. The deformation mechanism of the existing tunnel during the pit excavation was analyzed. Theoretical analysis results shows: excavation unloading decreases the pressure in horizontal direction of the tunnel, which causes tunnel taking the horizontal displacement to the pit side; convergent deformation keeps in horizontal stretching, vertical compression, but the deformation is aggravated; tunnel vertical uplift or settlement is determined by the pit excavation depth; precipitation would make tunnel sinking. Five domestic pit excavation engineering instance was collected, and the reliability of the analysis in this article is proved by the statistical analysis of the measured data.
Influence Research on Pit Excavation Close to Existing Shield Tunnel
Pit excavation has a negative impact on the existing shield tunnel close to it. The deformation mechanism of the existing tunnel during the pit excavation was analyzed. Theoretical analysis results shows: excavation unloading decreases the pressure in horizontal direction of the tunnel, which causes tunnel taking the horizontal displacement to the pit side; convergent deformation keeps in horizontal stretching, vertical compression, but the deformation is aggravated; tunnel vertical uplift or settlement is determined by the pit excavation depth; precipitation would make tunnel sinking. Five domestic pit excavation engineering instance was collected, and the reliability of the analysis in this article is proved by the statistical analysis of the measured data.
Influence Research on Pit Excavation Close to Existing Shield Tunnel
Advanced Materials Research ; 671-674 ; 54-59
11.03.2013
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Influence Research on Pit Excavation Close to Existing Shield Tunnel
| British Library Conference Proceedings | 2013
Influence Research on Pit Excavation Close to Existing Shield Tunnel
| Tema Archiv | 2013
Influence of Foundation Pit Excavation on Existing Shield Tunnel and its Protection Range
| British Library Conference Proceedings | 2014
Influence of Foundation Pit Excavation on Existing Shield Tunnel and its Protection Range
| Trans Tech Publications | 2014
Effect of the excavation clearance of an under-crossing shield tunnel on existing shield tunnels
| British Library Online Contents | 2018