Büchenauer Bridge
Coordinates: 49 ° 7 ′ 15 ″ N , 8 ° 35 ′ 12 ″ E
| Büchenauer Bridge | ||
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| use |
 Road bridge
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| Crossing of | Railroad tracks | |
| place | Bruchsal | |
| construction | Cable-stayed bridge | |
| overall length | 85.2 m | |
| width | 17.2 m | |
| Longest span | 58.8 m | |
| location | ||
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The Büchenauer Brücke is a road bridge in Bruchsal , Baden-Württemberg , which leads the Grabener Straße or the B 35 over the railway tracks of the Bruchsal train station, which is around 400 m further north . Your name refers to the now incorporated town of Büchenau, southwest of Bruchsal .
The bridge was built in 1955 and 1956 as part of the new B 35 bypass, as the older steel truss bridge was too small and weak and had to be demolished. Due to the requirements of the DB , a bridge had to be built without intermediate supports, for which only a cable-stayed bridge was possible. It was one of the very first modern cable-stayed bridges.
It has two lanes and two wide sidewalks and bike paths. It is a total of 85.2 m long, its main field has a span of 58.8 m and the two side fields of 13.20 m each.
Their abutments had to be built on piles because of the poor subsoil. They not only serve as bearings for the bridge deck, but also as a counterweight for the upward component from the pull of the stay cables.
The 17.2 m wide bridge deck has two lanes each 4.5 m wide and on both sides a bike path with 2.1 m and a sidewalk with 2.0 m width. In addition, it has a 1.8 m wide protective panel on both sides to shield the electrical overhead line of the railway, so that the overall width is 20.8 m. The bridge deck consists of a steel box girder open at the top , which is reinforced several times by longitudinal and transverse girders and is closed off by a 25 cm thick concrete slab connected to it. It has a construction height of 1.15 m. For the static calculations, the composite system formed from the steel girders and the concrete deck was considered as an orthotropic plate .
The bridge deck rests on four pendulum supports , which determine the length of the supports of 58.8 m and have a center distance of 13.2 m across. Instead of conventional pylons , the bridge has four vertical steel struts over these pendulum supports, which protrude 9 m above the roadway, are rigidly connected to it and each carry a rope that leads over cable saddles on their tips and in the bridge deck at distances from the posts of 13 , 3 m on the outside and 19.8 m on the inside.
The stay cables therefore do not carry the entire bridge deck, but only the loads from the main opening of 58.8 m and in particular those from the non-spanned central section of 19.2 m. The ropes each consist of 19 individual ropes with a diameter of 38 mm, which are arranged in a hexagonal profile and compressed into a cable.
The steel construction was created by J. Gollnow & Sohn, Karlsruhe, the road slab was concreted by a consortium from the companies Züblin and Stumpf.
literature
- René Walther, Bernard Houriet, Walmar Isler, Pierre Moïa: Cable- stayed bridges . Revised edition and translation, Verlag Bau + Technik / Beton-Verlag, Düsseldorf 1994, ISBN 3-7640-0328-6 , p. 141
- Karlheinz Roik, Gert Albrecht , Ulrich Weyer: Cable-stayed bridges . Ernst, Publishing House for Architecture and Technical Sciences, Berlin 1986, ISBN 3-433-00924-4 , p. 25
- R. Kunz, H. Trappmann, E. Tröndle: The Büchenauer Bridge, a new cable-stayed bridge on the federal highway 35 in Bruchsal. In: Der Stahlbau , Volume 26, Issue 4, April 1957, Ernst & Sohn, Berlin 1957
Web links
- Büchenauer Bridge. In: Structurae
- Büchenauer bridge on bridge web