![Étang footbridge [CFF underpass]](/images/Etang-01.png)
Étang footbridge [CFF underpass]
As part of the development of the Étang neighborhood in Vernier (Geneva), the “Sweet” mobility modification (pedestrians and bicycles) was designed to connect the neighborhood itself to the nearby Vernier train station. The new concrete prefabricated structure under the train tracks was installed with a pushing operation over the weekend from 27 to 30 October 2023, respecting the stringent project deadlines.
This operation involved the interruption of rail traffic between Cornavin station and Geneva Airport Station to allow the installation of a massive 600-ton structure under the railway tracks.
This public interest operation required rigorous planning by CFF employees and meticulous execution under the guidance of the Orllati company and its subcontractor responsible for the moving operation De Boer.
The operation began on Friday 27 October 2023 at 10pm and concluded successfully on Monday 30 at dawn. The 47 linear meter movement of the prefabricated underpass weighing approximately 600 tonnes took place as planned and lasted 80 minutes.
The structure, in fact, is located in a very limited position between the railway structures and equipment. “The positioning tolerance of the structure was on the order of one centimeter and the maximum distance between the structure and existing objects was a maximum of 5 cm. »
For this reason, LMSteel Consulting was in charge with the analysis and kinematic movement study of the pushing phases in order to create a digital model to validate and control on-site operations. The model considers the construction phases, excavations and backfilling, pushing and lifting equipment, track layout and interference with the railway and electrical cable ducts.
The project was developed by creating the 3D BIM LOD G geometric models with Tekla Structures and the video kinematics with Cinema 4D.
The commissioning of the Voie Verte is scheduled for the year 2025.
More information on the project at the following link:
- PLACE
- Vernier (Geneva)
- YEAR
- 2023
- StatE
- Completed
- ServiCES
- 3D BIM Modelling
- Launching Phase Kinematic Analisys
- FINAL CLIENT
- La Ville de Vernier + PG Promotors
- General Contractor
- Groupe Orllati SA (https://www.orllati.ch/)
- ERECTION PUSHING SYSTEM
- De Boer
- DESIGN TEAM
- T ingénierie sa + SWIC
- WEIGHT [TON]
- 600
Project Photo Gallery Étang underpass
