Norderelbbrücke (K6)
Coordinates: 53 ° 30 ′ 34 " N , 10 ° 3 ′ 33" E
| Norderelbbrücke | ||
|---|---|---|
 |
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| use | Road bridge | |
| Convicted | Federal motorway 1 | |
| Crossing of | Northern Elbe | |
| place | Hamburg-Wilhelmsburg , Hamburg-Rothenburgsort | |
| construction | Cable-stayed bridge | |
| overall length | 410.8 m | |
| width | 30.6 m | |
| Longest span | 171.9 m | |
| building-costs | 14 million DM | |
| start of building | 1959 | |
| opening | 1963 | |
| planner | Hellmut Homberg | |
| location | ||
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The Norderelbbrücke is a cable-stayed bridge that spans the Norderelbe between Hamburg - Wilhelmsburg and Rothenburgsort as part of the eastern bypass of the A1 motorway . It was the first large mid-level cable-stayed bridge in Germany.
history
The building was built between 1959 and 1963 as part of the construction of a southern bypass of the Hanseatic city of Hamburg as the first Hamburg construction of a new bridge after the Second World War. 22 offers were received after an ideas and construction competition advertised in autumn 1958. A steel bridge design by Rheinstahl Union Brückenbau AG with a mid-level cable-stayed bridge for a joint superstructure for both directions of travel was implemented. The building was checked by the civil engineer Hellmut Homberg . The architects Egon Jux and Harro Freese contributed to the design. The construction costs amounted to 14 million DM.
In 1978, increasing deflections of 19 centimeters in the central opening required the installation of an auxiliary support under the central opening due to safety considerations. In 1983 an average of 57,000 vehicles were counted every day. The proportion of trucks was around 22%. Between 1984 and 1986 extensive repair and renovation work followed, which cost 33 million DM. Among other things, the pylons and ropes were dismantled, a new cable span was erected and the carriageway construction was rebuilt for three lanes in each direction of travel, without hard shoulder.
The bridge has been registered with the Hamburg Authority for Culture and Media with the number 14429 in the list of Hamburg's cultural monuments since the 2010s .
In May 2015, cracks on the stabilization elements were repaired. Due to the state of construction and the planned eight-lane expansion of Autobahn 1, replacement new buildings are to be built for the bridge in the 2020s. In 2010, an average of over 100,000 vehicles were counted every day.
construction
The cable-stayed bridge has five openings and a total span of 410.8 m with a maximum span of 171.9 m at the central opening over the North Elbe. Two 53 m high central pylons with a symmetrical cable plane support the 30.6 m wide and 3 m high torsionally rigid bridge deck with an orthotropic plate as a lightweight steel carriageway in the middle field .
The original guy ropes consisted of two splayed rope bundles, which were led on the pylon over deflection saddles at a height of 17.68 m and 22.88 m respectively and anchored together on the bridge girder at a distance of 64 m. For aesthetic reasons, the two pylons were made much higher than the upper rope anchorage. Since the renovation, the rope anchoring has consisted of two strands of rope, each with four individual ropes, which are also anchored in the pylon and arranged roughly parallel ( harp-shaped ). The now higher position of the upper cable strands results in a steeper cable guide, which results in greater rigidity of the structure.
The pylon pillars were founded with caissons . The bridge was assembled in the peripheral areas with auxiliary supports. The main opening was in cantilever built with Hilfsabspannungen. The up to 32 m long assembly parts were installed with a floating crane.
New building
A replacement structure was planned in 2018 as part of the expansion of the A1. In a publicly advertised implementation competition, the planning community consisting of the engineering office Leonhardt, Andrä und Partner and the architecture office Gerkan, Marg und Partner prevailed with their design. The plan approval procedure is planned for 2021. Construction is scheduled to start in 2024 at the earliest.
Individual evidence
- ↑ a b c d e f The Federal Minister of Transport: Maintenance work on bridges and other road engineering structures - Documentation 1990 . Verkehrsblatt Verlag, 1990 Dortmund, ISBN 3-89273-068-7 , pp. 340–347.
- ^ A b c Karl-Eugen Kurrer, Eberhard Pelke and Klaus Stiglat: Unity of science and art in bridge building: Hellmut Homberg (1909–1990) - Life and Work (Part I ). In: Bautechnik, Volume 86, 2009, Issue 10, p. 649.
- ^ A b c Ralf Lange : Architectural Guide Hamburg . Edition Axel Menges, Stuttgart 1995, ISBN 3-930698-58-7 , p. 283.
- ↑ a b Erich Fiedler: Road bridges over the Elbe . Saxoprint, Dresden 2005, ISBN 3-9808879-6-0 , pp. 216-224.
- ↑ Hamburg Monument List of the Authority for Culture and Media, accessed on November 21, 2018
- ↑ www.hamburg.de
- ↑ This is what the new Norderelbbrücke looks like. Retrieved March 28, 2019 .
