TECHNICAL | DATA & DIGITAL


Right, figure 6: Settlement contours overview for Kalvebod project


Calculated cumulative settlements were shown on


a contour map, overlaid on the tunnel alignment and cadastral maps (see Figures 6 and 7). Calculations were undertaken on a 0.2m grid to create a detailed map of the movement and their rate of change nearing the excavation structures. For this project, the building damage assessment


was carried out in a semi-automated process. However, the tool has since been further developed to a fully automatic process where closed polylines in the drawing representing the building footprints are analysed. The semi-automatic process involved adding ‘Query’


Above, figure 7: Results around JØR shaft with auxiliary structures 30 | December 2023


lines (in the form of closed polylines in Civil 3D) for the geometry of the 40No buildings in the vicinity of Kalvebod tunnels/ shafts/ supporting structures. Those were drawn along the façade or side of the building nearest to the tunnel. These lines were then retrieved by the Dynamo program during analysis and 3D ground movements were interpolated at a depth estimated to coincide with building foundation depths (usually 1.5m – 2m deep). The results of the 3D ground movements were then used in the damage assessments.


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