Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Multi-Shield Excavation for a Large Rectangular-Shaped Tunnel
A laboratory model was used to investigate the phenomenon of load transfer in earth pressure due to the step-by-step excavation of an outer shell of a large rectangular-shaped tunnel. The results showed that different sequences of excavation of the tunnel shell gave a different history of stress redistribution. The effects of one tunnel shell excavation on the earth pressure acting on the preceding and succeeding tunnel shells were of different magnitudes. Hysteresis curves were used to obtain a better understanding of ground behavior created in each stage of the excavation. Here, by considering the sequence of excavation, it is suggested that the superimposed earth pressure increments resulting from each excavation should be applied to estimate the magnitude of the final earth pressure acting on roof of the completed large rectangular-shaped tunnel. According to the sequence of excavation, it has been observed that the magnitude of earth pressure on each tunnel shell can exceed the overburden pressure.
Multi-Shield Excavation for a Large Rectangular-Shaped Tunnel
A laboratory model was used to investigate the phenomenon of load transfer in earth pressure due to the step-by-step excavation of an outer shell of a large rectangular-shaped tunnel. The results showed that different sequences of excavation of the tunnel shell gave a different history of stress redistribution. The effects of one tunnel shell excavation on the earth pressure acting on the preceding and succeeding tunnel shells were of different magnitudes. Hysteresis curves were used to obtain a better understanding of ground behavior created in each stage of the excavation. Here, by considering the sequence of excavation, it is suggested that the superimposed earth pressure increments resulting from each excavation should be applied to estimate the magnitude of the final earth pressure acting on roof of the completed large rectangular-shaped tunnel. According to the sequence of excavation, it has been observed that the magnitude of earth pressure on each tunnel shell can exceed the overburden pressure.
Multi-Shield Excavation for a Large Rectangular-Shaped Tunnel
Junica, Maulidya Indah (Autor:in) / Tsuyoshi, Domon (Autor:in) / Kazuo, Nishimura (Autor:in)
Soft Ground Technology Conference ; 2000 ; Noordwijkerhout, the Netherlands
Soft Ground Technology ; 460-471
30.03.2001
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Multi-shield Excavation for a Large Rectangular-shaped Tunnel
| British Library Conference Proceedings | 2001
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| Springer Verlag | 2018