Numerical modelling of the reinforced concrete influence on a combined system of tunnel support

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The paper presents the experimental, laboratory determined rheological-dynamic analysis of the properties of fiber reinforced concrete, which was then utilized to show nonlinear analysis of combined system of tunnel support structure. According to the performed experiments and calculations, different processes of destructive behavior of tunnel lining were simulated in combination with elastic and elastic-plastic behavior of materials taking into account the tunnel loading, the interaction between the fiber reinforced concrete and soil, as well as the interaction between the fiber reinforced concrete and the inner lining of the tunnel.

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[3] Milašinović, D.D. Rheological-dynamical analogy: prediction of buckling curves of columns. International Journal of Solid Structures, vol. 29, 2000, no 29, p. 3965–4004.

[4] Grujić, B. Modeling of physical and mechanical properties of fiber reinforced concrete for application in constructions. PhD Thesis. Faculty of Architecture, Civil Engineering and Geodesy, Banja Luka, 2016.

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