Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Stability of Square Tunnels in Two Layered Clayey Soil
The support pressure offered by means of lining for maintaining the stability of a square tunnel driven in a layered clay medium under undrained condition has been determined. Finite element lower bound limit analysis and linear programming are used for performing the analysis. The support pressure is assumed to be uniform on the periphery of tunnel. The influence of undrained shear strength of upper layer relative to that of lower layer on the magnitude of support pressure has been studied. The magnitude of support pressure required to maintain the stability in the layered clay medium as compared to that of homogeneous clay layer has also been examined. Corresponding to a given cover of the tunnel, the magnitude of required support pressure is found to be decreasing continuously with an increase in the ratio of undrained shear strength of upper clay layer to that of lower clay layer.
Stability of Square Tunnels in Two Layered Clayey Soil
The support pressure offered by means of lining for maintaining the stability of a square tunnel driven in a layered clay medium under undrained condition has been determined. Finite element lower bound limit analysis and linear programming are used for performing the analysis. The support pressure is assumed to be uniform on the periphery of tunnel. The influence of undrained shear strength of upper layer relative to that of lower layer on the magnitude of support pressure has been studied. The magnitude of support pressure required to maintain the stability in the layered clay medium as compared to that of homogeneous clay layer has also been examined. Corresponding to a given cover of the tunnel, the magnitude of required support pressure is found to be decreasing continuously with an increase in the ratio of undrained shear strength of upper clay layer to that of lower clay layer.
Stability of Square Tunnels in Two Layered Clayey Soil
Lecture Notes in Civil Engineering
Latha Gali, Madhavi (Herausgeber:in) / P., Raghuveer Rao (Herausgeber:in) / Kumar, Bibhash (Autor:in) / Sahoo, Jagdish Prasad (Autor:in)
19.09.2020
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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