CFRP in bridge construction: Enertec Engineering supplies monitoring solution

Project overview

As part of the renovation of Cantonal Road 4 between Littau and Kriens, a globally unique solution was implemented on the Ränggloch leaning viaduct: Two of the four conventional steel prestressing cables were replaced by carbon fibre-reinforced plastic (CFRP) parallel wire bundles, the anchoring of which is also made entirely of CFRP.

Enertec's contribution:

Enertec Engineering AG provided the following services for this pioneering project:

• Supply of electrical anchor load cells for monitoring the forces in the CFRP cables

• Provision of wireless data loggers that enable wireless and continuous data acquisition

• Operation of the monitoring platform, which allows the preload forces to be displayed and analysed in real time

 

Advantages of the solution:

Continuous monitoring provides valuable data on the long-term behaviour of the CFRP prestressing and contributes to the safety and durability of the structure.

Conclusion:

With its innovative measurement technology, Enertec Engineering AG is making a significant contribution to the realisation and monitoring of this world first in bridge construction.

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Client: Canton of Lucerne, Transport and Infrastructure vif, Lucerne

Structural design: IG Kost + Partner, Sursee / B+S, Lucerne

Company: Anliker Bauunternehmung , Emmenbrücke

Pretensioning system: VSL Switzerland, Bern

CFRP cable: Carbo-Link, Fehraltorf

For further information please visit our website https://enertecinstruments.com and Espazium