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Estimation of Lining Pressure for Stability of Elliptical Tunnel in Cohesive-Frictional Soils
https://orcid.org/http://orcid.org/0000-0001-6547-036X
In this study, the magnitude of lining pressure required for stability of an elliptical tunnel in cohesive-frictional soil has been determined by using lower bound limit theorem in conjunction with finite elements and linear programing optimization technique. A uniform normal pressure (σi) is applied on the tunnel periphery to support the tunnel by means of lining or anchorage system. The evaluated support pressure is presented in terms of normalized pressure as σi/c acting on the periphery of a tunnel embedded in undrained cohesive and cohesive-frictional soil for different combinations of H/B, D/B, γB/c and ϕ where H is cover depth of tunnel from ground surface, B and D are width and depth of tunnel, respectively, and c, ϕ and γ are cohesion, peak friction angle and unit weight of soil, respectively.
Estimation of Lining Pressure for Stability of Elliptical Tunnel in Cohesive-Frictional Soils
https://orcid.org/http://orcid.org/0000-0001-6547-036X
In this study, the magnitude of lining pressure required for stability of an elliptical tunnel in cohesive-frictional soil has been determined by using lower bound limit theorem in conjunction with finite elements and linear programing optimization technique. A uniform normal pressure (σi) is applied on the tunnel periphery to support the tunnel by means of lining or anchorage system. The evaluated support pressure is presented in terms of normalized pressure as σi/c acting on the periphery of a tunnel embedded in undrained cohesive and cohesive-frictional soil for different combinations of H/B, D/B, γB/c and ϕ where H is cover depth of tunnel from ground surface, B and D are width and depth of tunnel, respectively, and c, ϕ and γ are cohesion, peak friction angle and unit weight of soil, respectively.
Estimation of Lining Pressure for Stability of Elliptical Tunnel in Cohesive-Frictional Soils
https://orcid.org/http://orcid.org/0000-0001-6547-036X
In this study, the magnitude of lining pressure required for stability of an elliptical tunnel in cohesive-frictional soil has been determined by using lower bound limit theorem in conjunction with finite elements and linear programing optimization technique. A uniform normal pressure (σi) is applied on the tunnel periphery to support the tunnel by means of lining or anchorage system. The evaluated support pressure is presented in terms of normalized pressure as σi/c acting on the periphery of a tunnel embedded in undrained cohesive and cohesive-frictional soil for different combinations of H/B, D/B, γB/c and ϕ where H is cover depth of tunnel from ground surface, B and D are width and depth of tunnel, respectively, and c, ϕ and γ are cohesion, peak friction angle and unit weight of soil, respectively.
Estimation of Lining Pressure for Stability of Elliptical Tunnel in Cohesive-Frictional Soils
Proc. Natl. Acad. Sci., India, Sect. A Phys. Sci.
Bhattacharya, Paramita (author) / Dutta, Puja (author)
2022-09-01
10 pages
Article (Journal)
Electronic Resource
English
Upper-bound stability analysis of dual unlined elliptical tunnels in cohesive-frictional soils
| British Library Online Contents | 2016
Upper-bound stability analysis of dual unlined elliptical tunnels in cohesive-frictional soils
| British Library Online Contents | 2016
Upper-bound stability analysis of dual unlined elliptical tunnels in cohesive-frictional soils
| British Library Online Contents | 2016