List of products by author: S. Spagnuolo

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  Estimation of stress distribution in precast tunnel segments due to TBM thrust

  Abstract: During the tunnel excavation process the Tunnel Boring Machine (TBM) advances by thrusting against the newest assembled ring. At this stage, the thrust jacks exert very high concentrated loads on the precast tunnel segments, resulting in high compression stresses and tensile bursting forces under the thrust jack plate, as well as spalling tensile forces between the pads. In the presented...

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  Hybrid solution (FRC+GFRP) in segmental lining Extension of Line C in Rome

  Abstract: In the last two decades, the use of the fiber reinforced concrete (FRC) and its advantages, met approval in several projects of tunnels made in mechanized excavation. In urban areas, sometimes, the FRC solution alone cannot meet the requirements and a possible hybrid solution, consists of glass fiber reinforced polymer bars (GFRP) and FRC can be adopted to increase the performance of the...

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