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List of products by author: I. Garcia
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Cross-passages in the TBM-tunnels of the Follobanen Project - design under high water pressures in hard rock.
Abstract: A major part of the Follobanen railway tunnel are the twin-tubes of 19 km length, excavated with TBMs almost entirely in hard gneisses. Along the segmentally lined tunnels, 80 openings are foreseen for cross-connections. Their maximum overburden is 150 m with potentially almost the same water level. The openings in the lining are 3.8 m wide and 4.55 m high.In case of high water levels, grouting...
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Effects of ground water pressure on the surrounding of cross passage openings through segmental concrete linings
Abstract: The main tunnels of the Follo Line Project will be built by shielded TBMs using a water tight segmental lining, while the most of the cross passages are foreseen to be drained. The segment ring and the collar, which supports the opening of the segmental lining, will constitute an undrained lining, but the ground water pressure in the rock mass around will be modified by the water flow towards...
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Segmental Lining Design for Long TBM Tunnels in Hard Rock - Case Study Follo Line Tunnels
Abstract: The two 18 km long TBM tunnels of the Follo Line in mainly very hard rock have an overburden of up to 165 m. Lining design was extensive, having to cover for very different design situations while providing economic reinforcement. Numerical analyses were performed with full 3D-analyses and shift-iteration, Pseudo-3D- and 2D-FE-models for structural verifications and curved shell models for...
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