BLS reconstruction of Zweisimmen railroad station | Projects | WALO

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Career
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Anchored in Switzerland and internationally active, WALO is managed as a family business in the 4th and 5th generation. For over 100 years, WALO has focused on the combination of consistency and innovation.

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WALO is active as an innovative total solutions company in all markets of the construction industry. The family-owned company has established itself as a reliable partner in the construction industry and infrastructure projects in Switzerland and worldwide with its decades of experience and the permanent development of sustainable as well as economical solutions.

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Whether residential, industrial, healthcare, outdoor or for sports and leisure facilities - seamless floor coverings have to meet a wide variety of requirements on a permanent basis.

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Good buildings and thus satisfied customers require precise construction work. All our employees, from unskilled workers to engineers, play a key role in ensuring that we achieve this goal time and time again.

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Project description

As part of the "TransGoldenPass" project of the Montreux-Berner Oberland-Bahnen (MOB), a transfer-free connection between Montreux and Spiez is to be created at the Zweisimmen station by constructing a gauge change facility. The expansion of the station facilities in Zweisimmen required for this also necessitates, among other things, a widening of the southern station access via Lenkstrasse due to the additional standard gauge connection of the MOB-Perrons. For this purpose, the east side of the two existing railroad bridges over Lenkstrasse as well as the existing retaining walls "Gemse" and "Technikräume" have to be replaced.

Special features

A major challenge of this construction site was the logistics. Due to the tight space conditions, the only access in the area of the "Gemse" retaining wall was via the existing east bridge. The logistics were therefore carried out via the track that was shut down during the construction phase. After completion of the «Gemse» retaining wall work, the abutment widening and dismantling of the east bridge could be started. At the same time, the «retaining wall technical rooms» with integrated technical room was constructed.

Main work carried out

Dismantling of the railroad line excl. tracks

Extensive excavation work

New retaining wall "chamois" on micropile foundation

Widening of abutment walls

Demolition and new construction of the east bridge

New construction of retaining wall «technical rooms»

Extensive work line construction

Pavement works

Special features of the bridge demolition

Edge area of the bridge is only 75 cm next to the railroad facilities in operation incl. the main power line of the railroad 5m above the bridge.

The cantonal road below the bridge was always in operation, a complete closure was not possible.

In the abutment space of the bridge there is an operating transformer of BKW with 16'000 volts.

During construction, the bridge was connected to the neighboring bridge by means of tie rods. In addition, the entire abutment area was filled with epoxy resin.

BLS reconstruction of Zweisimmen railroad station - bridge over Lenkstrasse

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