Numerical interpretation of monitoring data of an instrumented tunnel segmental ring

Stefania Fabozzi, Emilio Bilotta, Gianpiero Russo

Abstract

The segmental nature of the support system, the interaction mechanism between concretegrout-soil and the complex installation process a bored tunnel are the main factors influencing the lining structural behavior. The main purpose of this study is to provide a two dimensional numerical model of segmental lining which takes into account the first two factors for the preliminary interpretation of the experimental data obtained by long-term monitoring of the strains in the instrumented segments of a precast segmental ring of Naples Metro Line 6. This model can be extended to three dimensions for a complete interpretation of monitoring data, including consideration of the tunnel excavation process.

Keywords

Strains Monitoring, Tunnel Lining Behavior, Segmental Lining, 3D Numerical Modelling

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IMEKO-TC4-GEO-2016-59.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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