Abstract
The tunnel Progon is being constructed as a part of Corridor 10 highway project about 5 km north from the border crossing with Bulgaria in southern Serbia. During the design process 2D finite element analysis was utilized with the objective to investigate an influence of different support systems on the convergence across an excavation. Two models were used in calculations. The first model is elastic perfectly-plastic with constant stiffness independent of the stress level. The second model assumes hyperbolic relationship between the deviatoric stress and axial strain and stress dependent stiffness. This model also accounts for small strain stiffness of soil. In order to allow for a certain convergence across an excavation the load reduction method was utilized. Convergence monitoring is currently ongoing for the excavated portion of approx. 700 m of the tunnel exit portal. The measurements show cumulative displacements in the range of 1–3 cm. Results obtained by the analyses prior to the tunnel construction are in good agreement with the measurements. Convergence is approx. 5 cm when MC model is used and around 1 cm in the case of HS-small model, thus limiting the measurement results from the lower and upper bound.
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References
Baudendistel M (1979) Zum Entwurf von Tunneln mit großen Ausbruchsquerschnitt. In: Berechnung, Erkundung und Entwurf von Tunneln und Felsbauwerken / Computation, Exploration and Design of Tunnels and Rock Structures. Rock Mechanics / Felsmechanik / Mécanique des Roches, vol 8. pp 75–100. doi:10.1007/978-3-7091-8564-3_6
Brienkgreve RBJ, Broere W (2011) Plaxis 2DV10: finite element code for soil and rock analyses. Delft University of Technology & Plaxis b.v. Delft
Hoek E (2004) Numerical modelling for shallow tunnels in weak rock. http://geotecnica.dicea.unifi.it/hoek_shallow.pdf
Hoek E, Kaiser PK, Bawden WF (1993) Support of underground excavations in hard rock. Mining Research Directorate and Universities Research Incentive Fund, Ontario, p 225
Milenković S et al (2011) In geotechnics of hard soils—weak rocks: geotechnical conditions for the construction of tunnel “progon” on the dimitrovgrad bypass in Serbia. In: Anagnostopoulos A, Pachakis M, Tsatsanifos Ch. (eds) 15th European conference on soil mechanics and geotechnical engineering, Athens, September 2011. IOS Press BV, Amsterdam, p 2064
Moller SC (2006) Tunnel induced settlements and structural forces in linings (Dissertation). Institute of Geotechnical Engineering, Stuttgart
Moller SC, Vermeer PA (2004) In underground space use. Analysis of the past and lessons for the future: on design analyses of natm-tunnels. In: Solak E (ed) Proceedings of the international world tunnel Congress and the 31st ITA general assembly, Istanbul, May 2005. Taylor and Francis Group, London, p 1384
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Berisavljevic, Z., Milenkovic, S., Berisavljevic, D., Susic, N. (2015). Convergence Predictions and Primary Support Optimization of the Tunnel Progon. In: Lollino, G., et al. Engineering Geology for Society and Territory - Volume 6. Springer, Cham. https://doi.org/10.1007/978-3-319-09060-3_55
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DOI: https://doi.org/10.1007/978-3-319-09060-3_55
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