The railway station Flaminio, currently located at street level, will be relocated underground to connect the railway with the existing line A metro station. This paper describes the technical and technological solutions adopted in the design to minimize tunnelling-induced effects on the surface and, in particular, on an old masonry building, whose foundations are very close to the roof of the new three-tunnel station. To reduce the risks, pre-confinement works and soil improvements were designed; furthermore, a very stiff pre-support system consisting of 36 horizontal steel pipes filled with concrete, located just above the tunnels and installed using a special Micro Tunnel Boring Machine, was devised. The paper also presents the numerical models developed both in 2D and 3D to study the soil-structure interaction and the class A predictions in terms of expected settlements and potential damages induced.

Design of an underground railway station beneath a historic building in Rome and class A predictions of the induced effects / Miliziano, Salvatore; Caponi, Simone; Carlaccini, David; DE LILLIS, Armando. - In: GALLERIE E GRANDI OPERE SOTTERRANEE. - ISSN 0393-1641. - 132:(2019), pp. 9-26.

Design of an underground railway station beneath a historic building in Rome and class A predictions of the induced effects

Salvatore MILIZIANO;Armando DE LILLIS
2019

Abstract

The railway station Flaminio, currently located at street level, will be relocated underground to connect the railway with the existing line A metro station. This paper describes the technical and technological solutions adopted in the design to minimize tunnelling-induced effects on the surface and, in particular, on an old masonry building, whose foundations are very close to the roof of the new three-tunnel station. To reduce the risks, pre-confinement works and soil improvements were designed; furthermore, a very stiff pre-support system consisting of 36 horizontal steel pipes filled with concrete, located just above the tunnels and installed using a special Micro Tunnel Boring Machine, was devised. The paper also presents the numerical models developed both in 2D and 3D to study the soil-structure interaction and the class A predictions in terms of expected settlements and potential damages induced.
tunnelling; soil-structure interaction; settlements; micro TBM; 3D numerical modelling
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Design of an underground railway station beneath a historic building in Rome and class A predictions of the induced effects / Miliziano, Salvatore; Caponi, Simone; Carlaccini, David; DE LILLIS, Armando. - In: GALLERIE E GRANDI OPERE SOTTERRANEE. - ISSN 0393-1641. - 132:(2019), pp. 9-26.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1399340
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