A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Face Stability Analysis for a Shield Tunnel in Anisotropic Sands
Shield tunnels are widely used in urban underground construction. The stability of the tunnel face has become a crucial issue in shield tunneling. In this paper, the anisotropy of friction angles is taken into account in the upper theorem of limit analysis of the tunnel face. A formula of the anisotropic friction angles is established and applied in the limit analysis of the tunnel face, and the anisotropic parameters can be determined by the simple triaxial compression tests. The results are compared with existing works to validate the reasonability of the proposed method. Two types of constant friction angles are adopted to compare the anisotropic effects on the support pressures distributed uniformly on the tunnel face and the failure mechanism. The results show that the anisotropy of friction angles will lead to an increase in the support pressures and obviously influence the shape and range of the failure pattern. The anisotropy of friction angles should be considered in the stability analysis of the tunnel face.
Face Stability Analysis for a Shield Tunnel in Anisotropic Sands
Shield tunnels are widely used in urban underground construction. The stability of the tunnel face has become a crucial issue in shield tunneling. In this paper, the anisotropy of friction angles is taken into account in the upper theorem of limit analysis of the tunnel face. A formula of the anisotropic friction angles is established and applied in the limit analysis of the tunnel face, and the anisotropic parameters can be determined by the simple triaxial compression tests. The results are compared with existing works to validate the reasonability of the proposed method. Two types of constant friction angles are adopted to compare the anisotropic effects on the support pressures distributed uniformly on the tunnel face and the failure mechanism. The results show that the anisotropy of friction angles will lead to an increase in the support pressures and obviously influence the shape and range of the failure pattern. The anisotropy of friction angles should be considered in the stability analysis of the tunnel face.
Face Stability Analysis for a Shield Tunnel in Anisotropic Sands
Li, Wei (author) / Zhang, Chengping (author)
2020-03-18
Article (Journal)
Electronic Resource
Unknown
Experimental study of the face stability of shield tunnel in sands under seepage condition
| British Library Online Contents | 2018
Upper Bound Stability Analysis of Shield Tunnel Face in Nonhomogeneous and Anisotropic Soils
| Springer Verlag | 2017
Upper Bound Stability Analysis of Shield Tunnel Face in Nonhomogeneous and Anisotropic Soils
| Online Contents | 2017
Soil Stress of Shield Tunnel Face in Sands under High Hydraulic Pressure
| Tema Archive | 2012