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Noise Protection Hangar for Airliners at Zurich Air-port

Regular maintenance and repairs of an aircraft includes performing aircraft engine testing. For the protection of residents in nearby communities, Flughafen Zürich AG (FZAG) commissioned the planning of a noise protection hangar which goes beyond the legal require-ments for noise protection.

The Dlubal customer WTM Engi-neers was in charge of this project, together with Suisseplan, Zurich, GAC German Airport Consulting as well as with LSB Gesellschaft für Lärmschutz and brought it to a successful conclusion in June 2014.

WTM Engineers calculated the spatial supporting structure of the noise protection hangar statically with RSTAB and designed it with STEEL SIA according to the Swiss steel construction standard SIA 263. Main Supporting Structure The roof construction with an area of 5,200 m² is supported by an ex-ternal steel construction consisting of both spatial and flat trusses as well as support elements across a maximum span of 78.5 m. The hangar can accommodate aircraft up to the size of a Boeing 747-8 with a wing span of 68.5 meters.

The main supporting elements are two truss frames with ridge releases which span the whole hangar and support it in the transverse direc-tion. The frames are restrained to foundation blocks on the support nodes.

A truss girder spans the rear open-ing which is integrated into the gable wall.

In the longitudinal direction, trusses are placed in the apex zone at the side walls of the enclosure which are attached to the main truss frames. They cantilever about 34 m to the top of the hangar.

External spatial three-chord truss girders are linked to the main sup-porting structure to hold the trape-zoidal cross-sections of the roof.

With the noise protection hangar at the Zurich Airport, a building with appealing architecture has been created.

The following companies participat-ed in the construction:

Customer Flughafen Zürich AG

Planning Team

Engineering consortium WTM Engi-neers GmbH/Suisseplan AG/Hamburg/Zurich with GAC German Airport Consulting GmbH, Hamburg LSB Gesellschaft für Lärmschutz mbH, Hamburg

Software

Dlubal Software GmbH Tiefenbach, Germany www.dlubal.com

3D model of the noise protection hangar with visualized deformations (screenshot: Dlubal)

Noise protection hangar during construction (image: WTM Engineers GmbH)