Feeder Pipe Bridge – HLUBOKÁ n. VLTAVOU 1
Reinforced concrete bridge structure with prefabricated pylons on the route of the thermal feeder D149 (Temelín nuclear power plant – České Budějovice)
Feeder Pipe Bridge – Hluboká nad Vltavou
Facts
Investor:
ČEZ a.s.
Location:
Hluboká nad Vltavou (České Budějovice)
Project duration:
08/2022 – 03/2023
Project in numbers:
4 pcs (delivery and assembly – prefabricated pylons)
122 m (bridge span length)
48 pcs (PEIKKO screws PPM36 – anchoring into the foundation slab)
Detailed characteristics
The suspension construction of the pipeline bridge near the Hluboká Chateau is a sequel in appearance to the previous Křivonoska bridge construction and belongs among other objects on the route of the pipeline from the Temelín nuclear power plant to České Budějovice. The bridge structure was originally also designed as a monolithic suspension bridge, supported by a pair of V-shaped pylons with a steel bridge deck suspended on steel suspension cables anchored to reinforced concrete pylons placed on the foundations of axes 2 and 3 and subsequently woven into the anchor blocks.
In order to speed up the process of construction and launching of the hot water transmission line, the technical colleagues in cooperation with our structural engineer proposed a modification of the supporting structure in the form of prefabricated pylons anchored into the foundation slab.
Technical specifications
The pipe bridge is a suspension bridge, perpendicular with a span of 110.00 m. The suspension cables are anchored in the anchor blocks and in the tops of the pylons, the suspension cable is thus divided into 3 non-continuous parts – two parts between the anchor block and the pylon (return hangers) and a part in the main span (parabolic cable). The suspension cables are made of Redaelli full locked coil (FLC), with a characteristic strength of 1 640 MPa. Each pair of prefabricated pylons is woven into the monolithic base plate using PEIKKO PPM36 and Bold screws. This type of anchorage effectively transfers the bending stresses induced by the bridge deck to the subtill structure of the pylons.
The tops, due to the required accuracy of the anchorage seats with protruding eyes, were made in the form of a monolithic concrete structure with system formwork.
