Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Failure Mechanisms of Shallow Tunnel in Sandy Ground
Abstract The deformations and failure mechanisms of the tunnel face in a shallow ground were studied using a geotechnical centrifuge. The test setup comprised of a half section of tunnel of diameter (D) of 10 cm with a movable rigid face plate, both created using 3D printing technique. The plate was attached to a displacement-control actuator which moved into the tunnel to generate ground failure. In the testings, the ground of Nevada sand was prepared in a rigid test box to render different shallow burial depths C simulating C/D ratios of 0.3, 0.5, and 0.7. Dry, moist (5% water content), and saturated conditions were considered. The transparent wall of the test box allowed direct visualization and recording of deformations, and subsequent image analysis. The C/D ratios and water contents affected the vertical stress distribution in the ground. The observed failure surfaces were comparable with the mechanisms proposed by Horn.
Failure Mechanisms of Shallow Tunnel in Sandy Ground
Abstract The deformations and failure mechanisms of the tunnel face in a shallow ground were studied using a geotechnical centrifuge. The test setup comprised of a half section of tunnel of diameter (D) of 10 cm with a movable rigid face plate, both created using 3D printing technique. The plate was attached to a displacement-control actuator which moved into the tunnel to generate ground failure. In the testings, the ground of Nevada sand was prepared in a rigid test box to render different shallow burial depths C simulating C/D ratios of 0.3, 0.5, and 0.7. Dry, moist (5% water content), and saturated conditions were considered. The transparent wall of the test box allowed direct visualization and recording of deformations, and subsequent image analysis. The C/D ratios and water contents affected the vertical stress distribution in the ground. The observed failure surfaces were comparable with the mechanisms proposed by Horn.
Failure Mechanisms of Shallow Tunnel in Sandy Ground
Dziuban, Bartlomiej (Autor:in) / Ling, Hoe I. (Autor:in) / Li, Liming (Autor:in)
Transportation Infrastructure Geotechnology ; 5 ; 318-331
23.07.2018
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Failure Mechanisms of Shallow Tunnel in Sandy Ground
| Online Contents | 2018
Tunnel Face Behavior at Sandy Shallow Ground
| British Library Online Contents | 1995
Construction method of shallow railway tunnel in loose sandy ground
| British Library Conference Proceedings | 2005
Ground Subsidence due to a Shallow Tunnel in Dense Sandy Gravel
| British Library Online Contents | 2002
Ground Subsidence due to a Shallow Tunnel in Dense Sandy Gravel
| Online Contents | 2002