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List of products by author: V. Floria
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Cross passages between twin tunnels. Preliminary design schemes
Abstract: When a project includes two parallel tunnels, cross passages linking both tunnels are normally constructed for safety reasons during tunnel exercise. Design and construction of the cross passages is a challenging issue in tunnelling design. Excavating cross passages through rock, soft ground, and mixed face conditions presents very different challenges as well as handling groundwater creates...
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Large diameter EPB excavation with low overburden in St.Peterburg
Abstract: Line 5 of Saint Petersburg Metro, also known as Frunzensko-Primorskaya Line, connects the city's historical centre to the north western and southern area. The line is being extended from both ends since 2009. The line originally opened in December 2008. It contained only two stations until March 7, 2009, when the Line 4 (Pravoberezhnaya Line) segment between Komendantsky Prospekt to Sadovaya...
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Numerical Analysis of Settlements due to Conventional Tunnelling
Abstract: In the design phase of a shallow tunnel, one of the relevant aspects to take into consideration is the stress release generated in the neighbourhood of the excavation. In fact, the material removal causes a variation of the initial state of stress and the stress release induces surface subsidence. In urban areas, surface settlements must be evaluated in order to properly perform risk analysis...
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On developing an innovative, self-supported, cut and cover structure for the Brooklin station of the São Paulo Metro
Abstract: The São Paulo Metro line 5 involves different typical construction methods for the stations: cut&cover (in the configuration bottom-up and top-down), mined underground stations excavated with the NATM, multi-secant large diameter shafts. Special constraints at the Brooklin station site of the São Paulo Metro line 5 (polluted multilevel aquifers, reduced spaces for the construction site,...
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