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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Stabilization of Underground Tunnel Using Micropiles: Finite Element Approach
https://orcid.org/http://orcid.org/0000-0003-2183-703X
For the past few decades, large scale urbanization has limited the space for the commencement of new infrastructural projects. Therefore, the modern construction industry has utilized the surface above the underground tunnel opening for construction purposes. This put a need to stabilize these underground structures due to construction above them. The present numerical study has been carried out using GeoStudio 2016 to understand the problem. The 2D Numerical model replicating the Delhi metro phase 3 tunnel projects at a standard depth of 10 m. The tunnel has a circular cross-section with a diameter of 5 m and a concrete lining of 30 cm thick. The overburden of the superstructure has been varied upto 3rd floor of the building (G + 3 building load) and the corresponding response of the tunnel has been observed at different locations (crown, spring-line and invert). Later, the ground has been stabilized by incorporating micropiles as vertical reinforcement within the footing of superstructure. It has been concluded that the micropile can stabilize the tunnel and the superstructure to a different extent. The micropiling results in the redistribution of moment in the tunnel lining with a part of the moment in the crown section getting transferred to the invert.
Stabilization of Underground Tunnel Using Micropiles: Finite Element Approach
https://orcid.org/http://orcid.org/0000-0003-2183-703X
For the past few decades, large scale urbanization has limited the space for the commencement of new infrastructural projects. Therefore, the modern construction industry has utilized the surface above the underground tunnel opening for construction purposes. This put a need to stabilize these underground structures due to construction above them. The present numerical study has been carried out using GeoStudio 2016 to understand the problem. The 2D Numerical model replicating the Delhi metro phase 3 tunnel projects at a standard depth of 10 m. The tunnel has a circular cross-section with a diameter of 5 m and a concrete lining of 30 cm thick. The overburden of the superstructure has been varied upto 3rd floor of the building (G + 3 building load) and the corresponding response of the tunnel has been observed at different locations (crown, spring-line and invert). Later, the ground has been stabilized by incorporating micropiles as vertical reinforcement within the footing of superstructure. It has been concluded that the micropile can stabilize the tunnel and the superstructure to a different extent. The micropiling results in the redistribution of moment in the tunnel lining with a part of the moment in the crown section getting transferred to the invert.
Stabilization of Underground Tunnel Using Micropiles: Finite Element Approach
https://orcid.org/http://orcid.org/0000-0003-2183-703X
For the past few decades, large scale urbanization has limited the space for the commencement of new infrastructural projects. Therefore, the modern construction industry has utilized the surface above the underground tunnel opening for construction purposes. This put a need to stabilize these underground structures due to construction above them. The present numerical study has been carried out using GeoStudio 2016 to understand the problem. The 2D Numerical model replicating the Delhi metro phase 3 tunnel projects at a standard depth of 10 m. The tunnel has a circular cross-section with a diameter of 5 m and a concrete lining of 30 cm thick. The overburden of the superstructure has been varied upto 3rd floor of the building (G + 3 building load) and the corresponding response of the tunnel has been observed at different locations (crown, spring-line and invert). Later, the ground has been stabilized by incorporating micropiles as vertical reinforcement within the footing of superstructure. It has been concluded that the micropile can stabilize the tunnel and the superstructure to a different extent. The micropiling results in the redistribution of moment in the tunnel lining with a part of the moment in the crown section getting transferred to the invert.
Stabilization of Underground Tunnel Using Micropiles: Finite Element Approach
Lecture Notes in Civil Engineering
Marano, Giuseppe Carlo (Herausgeber:in) / Ray Chaudhuri, Samit (Herausgeber:in) / Unni Kartha, G. (Herausgeber:in) / Kavitha, P. E. (Herausgeber:in) / Prasad, Reshma (Herausgeber:in) / Achison, Rinu J. (Herausgeber:in) / Shah, Irfan Ahmad (Autor:in)
International Conference on Structural Engineering and Construction Management ; 2021
04.09.2021
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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