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Schuman Station

Venue

Brussels, Belgium

Tasks

Control of vibrations, tailor-made sound system for the station

Owner

SNCB

Amount of work

€1,200,000,000 (excl. VAT)

Architect

AREP

Year

Delivered in 2013

Surface

1km

In order to provide service to the very busy European district of Brussels and particularly to the Berlaymont building which houses the headquarters of the European Commission, the Schuman station was built below the building.

Methodology

With 40 years of experience in vibro-acoustic engineering, Tisseyre + Associés has distinguished itself by investing in research & development in order to offer integrated, optimized and low-cost acoustic and vibration technical solutions. To control vibrations, as part of a European research contract (Predit contract), we have developed a low-cost vibration decoupling system. As for acoustic engineering, we have developed a 3D modeling tool for spaces in operation: Intelligibility®. Thus, we can collaborate from the first stages of the project with the architects and design offices in order to propose vibro-acoustic solutions, optimized, integrated and adapted to the needs of the users.

Tasks

Vibration control

Within the framework of the Predit contract, we have shown that the traditional uncoupling systems such as structural breaks by springs or even neoprene were much more expensive than a system for breaking the vertical impedance of the tracks by means of panels of Rockwool. In addition, in order to meet both the substantial vibration criteria for train tracks, and resistance to loads, we have selected specific rock wools that meet or even exceed the requirements in terms of vibration control. This system thus makes it possible to reduce both the time of the work and the cost. Indeed, the cost of this type of realization varies within a range of 50 to 100 € per suspended ton, which corresponds to a reduction in the cost of 10% compared to spring systems.

Bespoke station sound system

Thanks to our tool for digital models of the spaces in operation Intelligibility®, we dimensioned the entire sound system for the platforms. In the configuration of the Schuman station where several platforms are superimposed, this system must guarantee the intelligibility of the sound messages perceived by the users at each place of a platform, while not disturbing the sound messages perceived on another. This dimensioning takes into account ambient noise, human noise and the stops and starts of trains and metros. Thus, we have implemented architectural acoustic solutions and studied the whole layout of the loudspeakers and their tailor-made directivity so that the intelligibility of the sound messages is maximum for each platform.

Sound impact of metro and train noise

Intelligibility of the sound system with the trains in operation

Intelligibility of the sound system with a train in operation

Intelligibility of the sound system with a train in operation

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