Page 205 - Numerical Analysis and Modelling in Geomechanics
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186 ANNAMARIA CIVIDINI AND GIANCARLO GIODA
Figure 6.10 Comparison between the vertical displacements measured at the end of
construction and those obtained by the elasto-plastic analysis.
Figure 6.11 Contour lines of the square root of the second invariant of the deviatoric
plastic strains.
On these bases, the finite element model was applied to the analysis of the
modified construction procedure for the railroad tunnel for evaluating the
consequent reduction of the surface settlements.
The change in the construction procedure is easily introduced into the finite
element analysis simply by refining the mesh at the tunnel shoulders and
assigning the property of the grouted soil to a larger number of elements with
