A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Underground Works
Convergence–Confinement Method
This chapter acts as a presentation to underground works for engineers and construction professionals. It provides “simplified” notions relating to underground works, thus giving greater understanding of the main mechanisms at work in underground excavations. When the underground excavation is carried out in a soft soil, the digging of the underground gallery is associated with significant deformations that must be opposed by the supporting structures. These deformations result in what engineers specializing in tunnels refer to as the “convergence” of the excavation walls. The chapter covers two concepts: the failure area at the vault of the tunnel; and the notion of tunnel convergence. During excavation, the terrain is deformed around the tunnel. This deformation can also reach the surface. The “convergence‐confinement” method involves replacing the terrain being excavated by an equivalent stress tensor, whose intensity is increased through the deconfinement rate X.
Underground Works
Convergence–Confinement Method
This chapter acts as a presentation to underground works for engineers and construction professionals. It provides “simplified” notions relating to underground works, thus giving greater understanding of the main mechanisms at work in underground excavations. When the underground excavation is carried out in a soft soil, the digging of the underground gallery is associated with significant deformations that must be opposed by the supporting structures. These deformations result in what engineers specializing in tunnels refer to as the “convergence” of the excavation walls. The chapter covers two concepts: the failure area at the vault of the tunnel; and the notion of tunnel convergence. During excavation, the terrain is deformed around the tunnel. This deformation can also reach the surface. The “convergence‐confinement” method involves replacing the terrain being excavated by an equivalent stress tensor, whose intensity is increased through the deconfinement rate X.
Underground Works
Convergence–Confinement Method
Dhouib, Ammar (author)
2023-01-02
29 pages
Article/Chapter (Book)
Electronic Resource
English
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