Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Influence of multi-layered soil formation on shield tunnel lining behavior
The recent development of larger shield-driven tunnels has for consequence that the tunnel face consists more frequently of multi-layered formations. However, most tunnel designs are still currently conducted in the homogeneous soil condition. In this study, a series of 1-g plane model tests and FEM analyses were carried out to investigate the influence of the layered soils in terms of their relative stiffness and thickness on the lining behavior (i.e. inner force and convergence). The numerical results were found to agree reasonably well with the results obtained from the model tests. For multi-layered formation, a linear increase of the relative thickness of the sandy layer could reduce non-linearly the magnitude of both the moment and the convergence. The distributions of the bending moment and of the convergence along the tunnel perimeter were found to be strongly dependent on the relative stiffness of the layered formations. However, the multi-layered condition has little effect on the thrust force under the condition of this test. In view of these results, some discussions on the applicability of the widely used homogenized design model for the multi-layered soil condition are finally presented.
Influence of multi-layered soil formation on shield tunnel lining behavior
The recent development of larger shield-driven tunnels has for consequence that the tunnel face consists more frequently of multi-layered formations. However, most tunnel designs are still currently conducted in the homogeneous soil condition. In this study, a series of 1-g plane model tests and FEM analyses were carried out to investigate the influence of the layered soils in terms of their relative stiffness and thickness on the lining behavior (i.e. inner force and convergence). The numerical results were found to agree reasonably well with the results obtained from the model tests. For multi-layered formation, a linear increase of the relative thickness of the sandy layer could reduce non-linearly the magnitude of both the moment and the convergence. The distributions of the bending moment and of the convergence along the tunnel perimeter were found to be strongly dependent on the relative stiffness of the layered formations. However, the multi-layered condition has little effect on the thrust force under the condition of this test. In view of these results, some discussions on the applicability of the widely used homogenized design model for the multi-layered soil condition are finally presented.
Influence of multi-layered soil formation on shield tunnel lining behavior
Zhang, Dong-Ming (Autor:in) / Huang, Hong-Wei (Autor:in) / Hu, Qun-fang (Autor:in) / Jiang, Fan (Autor:in)
Tunnelling and Underground Space Technology ; 47 ; 123-135
2015
13 Seiten, 35 Quellen
Aufsatz (Zeitschrift)
Englisch
Influence of multi-layered soil formation on shield tunnel lining behavior
| Online Contents | 2015
Tunnel lining design in multi-layered grounds
| British Library Online Contents | 2018
Hallinger tunnel shield, and Erdelyi and Vajda. tunnel lining
| Engineering Index Backfile | 1940
Fire protection for TBM shield tunnel lining
| British Library Conference Proceedings | 2004
Steel lining method for shield tunnel reinforcement
| Tema Archiv | 2002