Displacement of a 110 t tunnel section

In the course of reconstructing a combined bus/rail linkage point in the centre of the thermal spa resort Wiesenbad to allow unhindered access for persons with restricted mobility, it became necessary to install a heavy tunnel block segment. On account of the problematic soil conditions on the construction site, hoisting the segment in place using heavy crane equipment would have proved too costly. Accordingly, we were commissioned to transport the segment to the site using an appropriate handling gantry.

For designing our track system, special strip foundations had to be cast so as to provide a firm and level substrate capable of sustaining heavy load transportation operations. Following erection of the tracks and placement of our operating equipment, the 110 t precast concrete block was hoisted using a hydraulic gantry and conveyed on the track system to the concrete base, where it was lowered into place.