Rockfall Gallery Mingèr
Martina (Graubunden), Switzerland
When hardware and software work together in the best possible way
The 240 m long gallery Mingèr in Switzerland has been built to protect the main traffic route in the Engadine high valley from rockfall and avalanches.
The special requirement for the project was to ensure an unrestricted drive-through passage, so that traffic could continue to roll as usual during the construction work. The solution came in the form of Doka #UniKit. To achieve the required span width, two travellers were used, combined the new heavy-load primary and secondary beams from the new engineering kit (including extensions) and also SL-1 beams. The construction company was faced with the challenge of realising the predefined concrete pouring sequence with different block lengths (10.0 / 12.5 / 15.0m) and completing the construction work before the winter.
Special Feature: Thanks to crane-independent, foldable side formwork, it was easy to pass through the already existing concrete pillars when moving the formwork. In addition to the supporting structure and formwork, Doka software was also used in this project.
Due to the need to speed up construction time, the construction company decided to use #Concremote to monitor early age compressive strength. By using Concremote cable sensors, our customer was able to reduce stripping time by half and construction could be completed five weeks earlier than expected. Due to the need to accelerate construction time, the customer opted to use Concremote to monitor early strength. By using Concremote cable sensors, the removal deadline was reduced by half and construction work was completed five weeks earlier than expected.
Challenges:
- Construction work during ongoing traffic
- Completion of site work before winter time
- No experience with Concremote by the Graubunden Civil Engineering Office
Customer requirements:
- Unrestricted drive-through passage
- Reduction of the required 2 weeks stripping time to 1 week in order to complete site work before winter time
- Close cooperation with the Graubunden Civil Engineering Office
Project solution:
- UniKit primary and secondary beams
- Calibration of the concrete mix
- Concremote sensors for measuring compressive strength development in the tunnel slab
Time savings
Reduction of stripping time by 50 %, which lead to five weeks earlier completion
Cost reduction
Cost savings of 40.000 CHF due to earlier completion
Project data
Year of completion
2022
Period of Concremote use
04|2022 - 10|2022
Country
Schweiz
Zip/Postal Code
7560
City
Martina
Customer
Bezzola Denoth AG
Building data
Type of construction
Avalanche and rockfall gallery
Concremote
Used Concremote Hardware:
2 pcs. calibration boxes, 4 pcs. cable sensors 2.0, measuring cables with 3 measuring pointsConcrete mixes in use:
1Number of measurements:
18
