Rijnlandroute start and receiving shaft structures
Before the tunnel boring machine (TBM) can start boring through the diaphragm wall of the start shaft, auxiliary structures need to be realised in the shaft. Arthe designed the required sealing block of low-strength concrete for the launch shaft and the reception shaft. For the assembly and disassembly of the tunnel boring machine, a temporary piled foundation has been designed for the cranes.
Activities
For Comol5, Arthe has performed the following activities:
- Definition of the start procedure for the boring process.
- Functional design for the concrete bell construction;
- Defining requirements (design loads and detailing) for the concrete bell;
- Design and engineering of the pushframe;
- Inspection and engineering of the adjustments required to re-use the shield cradle;
- Site engineering of the auxiliary structures;
- Design and engineering of the sealing block;
- Specification of design loads on the diaphragm walls related to the boring process for both the launch- and reception shaft.
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