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Comparison of measured and calculated interactions between slope creeping and tunnel structures
For the design of structures, the creep deformation of slopes and the evolution of creep pressure are only coarsely taken into consideration. Over the time, creep deformations can achieve remarkable magnitudes, thus the evolution of creep stress on structures is investigated here. The northern access of the Brenner Base Tunnel (BBT) is situated in a creeping mass movement. The geodetic monitoring shows constant displacement rates. Also inclinometer, convergence and anchors’ force measurements are continuously evaluated. This mass movement interacts with the tunnel structure on the first tunnel meters. To quantify the resulting additional stresses, finite element 3D models simulations were performed and validated. The viscose parameters were back calculated according to the displacement of natural slope. The results show evolution of stresses and displacements and allow extrapolation for the design life‐cycle of the BBT of 200 years. Continuous measurements combined with continually calibrated simulation model guarantee a holistic monitoring of slope‐tunnel interaction.
Comparison of measured and calculated interactions between slope creeping and tunnel structures
For the design of structures, the creep deformation of slopes and the evolution of creep pressure are only coarsely taken into consideration. Over the time, creep deformations can achieve remarkable magnitudes, thus the evolution of creep stress on structures is investigated here. The northern access of the Brenner Base Tunnel (BBT) is situated in a creeping mass movement. The geodetic monitoring shows constant displacement rates. Also inclinometer, convergence and anchors’ force measurements are continuously evaluated. This mass movement interacts with the tunnel structure on the first tunnel meters. To quantify the resulting additional stresses, finite element 3D models simulations were performed and validated. The viscose parameters were back calculated according to the displacement of natural slope. The results show evolution of stresses and displacements and allow extrapolation for the design life‐cycle of the BBT of 200 years. Continuous measurements combined with continually calibrated simulation model guarantee a holistic monitoring of slope‐tunnel interaction.
Comparison of measured and calculated interactions between slope creeping and tunnel structures
SCHNEIDER‐MUNTAU, Barbara (author) / CORDES, Tobias (author)
ce/papers ; 2 ; 505-510
2018-06-01
6 pages
Article (Journal)
Electronic Resource
English
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