Three-Dimensional Structural Analyses and Design of Segmented Tunnel Lining at Construction Stage
This paper deals with the structural analyses of the segmented tunnel lining using three-dimensional finite element model. With this model it is possible to observed stresses and deformations which occur in concrete lining during the construction stage (assembling) and latter at serviceability stage. Most of the conventional models of tunnel lining assume structural loads as full overburden at the serviceability stage and the resulted sectional forces, bending moments and deformations are used for the lining design. Loads from the construction stage when assembling the segments are essentially different from the loads at serviceability stage. Huge monitoring programme of the tunnel lining in Netherlands by the Second Heinenoord tunnel is still running. Hypotheses based on the conclusions from measurement data and the results of three-dimensional FEM analyses confirmed each other.
KeywordsStress Path Conventional Model Finite Element Method Model Tunnel Lining Construction Stage
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