Královopolské Tunnels on the Brno City Ring – cut-and-cover tunnels in front of the Žabovřesky portal - Zakládání staveb, a. s.

Královopolské Tunnels on the Brno City Ring – cut-and-cover tunnels in front of the Žabovřesky portal


Královopolské Tunnels on the Brno City Ring – cut-and-cover tunnels in front of the Žabovřesky portal

In connection with realisation of the Královopolský Tunnel on the portal forefield in Žabovřesky technologies of special foundation engineering were used to build the necessary building structures. The most important among these structures were cut-and-cover sections of the tunnel tubes strutted at two levels by steel pipes. At both ends the cut-and-cover sections continue with portals – provisional as well as definitive ones – carried out with use of the technology of reinforced concrete diaphragm walls. The tunnel structure fits into a deep cut made within a built-up area; this solution required extensive pile foundations of galleries, breast walls as well as several bridge structures. Furthermore, within the framework of measures carried out to support tunnel driving works in the section with low overburden there were 6 pile wall diaphragms carried out on each of the tunnel tubes.

Measures

Piles diam. 900 mm – 452 pcs., 5453 m
Piles diam. 1200 mm – 696 pcs., 7386 m
Piles diam. 660 mm – 60 pcs., 510 m
Piles diam. 900 mm – 188 pcs., 2828 m
Piles diam. 1000 mm – 180 pcs., 2867 m
Piles diam. 800 mm, non-reinforced – 207 pcs., 4765 m
Concrete reinforced diaphragm walls – 3570 m2
Shotcrete – 5505 m2
Steel tube struts - 543 t
Earth works – 54907 m3
Reinforced concrete strap beams – 569 m3

Client

Associated companies: OHL ŽS Co..;
Metrostav Co.; Subterra Co.

Investor

Road and Motorway Directorate of the Czech Republic, Statutory, City of Brno and State Fund for Transport Infrastructure

Price

Year

7,59 mil. EUR 2007–2010



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  • Type of construction : Traffic projects
  • Country : Czech Republic
  • Financial volume : 100– more mil. Kč
  • Completion date : 2006-2010
  • Supporting technologies : Piles

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148 26 Praha 4

 

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Zakládání staveb, a. s.
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