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List of products by author: Z. Rinaldi
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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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Feasibility analysis for the use of fiber reinforced concrete precast segment in Nenskra hydraulic tunnels
Abstract: The construction of two hydraulic tunnels with a total length of 30 km is forecast in the Nenskra (Georgia) project. These tunnels will be mechanical excavated with a precast segmental lining. The possibility of using fiber reinforced concrete segment without any traditional reinforcement has been considered. In order to obtain suitable performance of the lining, a process was defined in order...
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Full-scale tests on precast tunnel segments in fiber reinforced concrete
Abstract: The use of Fiber Reinforced Concrete in precast tunnel segments is continuously increasing. The possibility of totally substituting the ordinary steel cage with a fiber reinforcement allows several advantages related to higher quality and reduced costs. Several researches were developed on the field [1-5], showing the feasibility of this solution. A particular attention was paid on enhancing...
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