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Computational methods 203

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Index

Table 1.2 Different tunnel transversal sections – horseshoe without invert, polycentric with invert and circular shape (measurements expressed in m)

Project name Tunnel function Section Section sketch peculiarity

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Porrettana Railway Railway tunnel Horseshoe Line (1864) shape tunnel Bologna–Florence without invert Italy

High-Speed Railway Railway tunnel Polycentric Tunnel shape tunnel Milan–Genoa with invert Italy

Kat 3 Tunnel Mixed traffic Circular shape Istanbul Metro and tunnel Turkey road tunnel

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HANDBOOK ON TUNNELS AND UNDERGROUND WORKS