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Control Tower - Airport Vienna (Austria)

Project overview:

In the course of the expansion of the International Airport of Vienna, located app. 20 km southeast of the city center in Schwechat, a new control tower and a new air traffic service building have been erected. The design and project work was performed by the consortium Zechner - Lorenz. The main structure of the app. 110 m high control tower is a concrete core with a circular cross-section (inner diameter of app. 9,4 m) which carries most of the load down to the foundation level at 11 m under ground level.

The subsoil consists of an alterating sequence of neogene sediments with (very) dense sands and clayey silts with a consistency between stiff and firm. In order to minimize subsidence due to vertical loads and horizontal loads (as a result of winds and earthquakes) a piled raft foundation consisting of 34 bored piles with a diameter of 1.2 m and lengths up to 26 m in combination with a base plate of 2.5 m thickness was constructed.

In cooperation with the Institute for Soil Mechanics and Foundation Engineering at the Graz University of Technology, various 3D finite element analyses were performed for a class-A predicion of the settlements. Additionally, comprehensive monitoring was carried out during the construction of the tower.

Services provided:

  • Foundation design
  • Geotechnical analyses of the deep foundation
  • Consulting during the construction of the building pit
  • Development of the monitoring programme

Client: Lorenz Consult ZT GmbH

Time period: 2003 - 2004

Photos / Grafics: Lorenz Consult ZT GmbH