Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Finite Element Analysis of Soil Reinforced Canal Tunnel
Tunnel lining is a permanent ground support system to the periphery of a tunnel and generally constitutes 30% to 40% of the total cost of the tunnel. In the hilly region, the terrain is undulated, and it is very difficult to construct a canal without an elevated section or underground section. If the elevated ground surface is in the alignment of the canal, then it is highly necessary to construct the underground tunnel. Bending moment, thrust and shear coefficient were determined at various locations and are expressed in terms of unit intensity of loading and unit internal crown radius. IS: 4880-Part IV (1971) has set basic equations for calculating various stresses in the concrete lining and surrounding rock mass. In the case of fully saturated soil in backfill (rainy season and flood), the saturated unit weight of backfill soil is the most critical condition of tunnel. The empty condition of the canal tunnel makes the tunnel more critical during flood with respect to stability and design. This study aims to reduce the horizontal earth pressure acting on the vertical face of tunnel and study the arching effect on the crest of D—shaped tunnel. The earth reinforcement (Geo-net/Geogrid) placed in the backfill retained by tunnel lining counterbalance the earth pressure by offering frictional resistance up to a great extent. As a result, the thickness of the vertical wall of 1 D—shaped tunnel can be reduced.
Finite Element Analysis of Soil Reinforced Canal Tunnel
Tunnel lining is a permanent ground support system to the periphery of a tunnel and generally constitutes 30% to 40% of the total cost of the tunnel. In the hilly region, the terrain is undulated, and it is very difficult to construct a canal without an elevated section or underground section. If the elevated ground surface is in the alignment of the canal, then it is highly necessary to construct the underground tunnel. Bending moment, thrust and shear coefficient were determined at various locations and are expressed in terms of unit intensity of loading and unit internal crown radius. IS: 4880-Part IV (1971) has set basic equations for calculating various stresses in the concrete lining and surrounding rock mass. In the case of fully saturated soil in backfill (rainy season and flood), the saturated unit weight of backfill soil is the most critical condition of tunnel. The empty condition of the canal tunnel makes the tunnel more critical during flood with respect to stability and design. This study aims to reduce the horizontal earth pressure acting on the vertical face of tunnel and study the arching effect on the crest of D—shaped tunnel. The earth reinforcement (Geo-net/Geogrid) placed in the backfill retained by tunnel lining counterbalance the earth pressure by offering frictional resistance up to a great extent. As a result, the thickness of the vertical wall of 1 D—shaped tunnel can be reduced.
Finite Element Analysis of Soil Reinforced Canal Tunnel
Lecture Notes in Civil Engineering
Satyanarayana Reddy, C. N. V. (Herausgeber:in) / Saride, Sireesh (Herausgeber:in) / Krishna, A. Murali (Herausgeber:in) / Bagri, Archana Singh (Autor:in) / Singh, A. K. (Autor:in)
28.07.2021
12 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Finite Element Analysis of Soil Reinforced Canal Tunnel
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