Inn Bridge (Arlbergbahn)
Coordinates: 47 ° 8 ′ 28 ″ N , 10 ° 33 ′ 55 ″ E
| Inn Bridge | ||
|---|---|---|
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| use | Railway bridge | |
| Convicted | Arlbergbahn | |
| Crossing of | Inn | |
| place | Landeck | |
| Entertained by | ÖBB-Infrastruktur AG | |
| construction | Arched bridge with elevated roadway | |
| width | 6.5 m | |
| Longest span | 63.7 m | |
| Clear height | 20.8 m | |
| building-costs | 3.7 million euros | |
| opening | April 29, 2009 | |
| location | ||
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| Above sea level | 775 m above sea level A. | |
The Innbrücke is a railway bridge over the Inn in Landeck in Tyrol . It leads the Arlbergbahn , coming from Innsbruck on the right bank of the Inn, over the Inn coming from the south from the Upper Court . It was built in the course of the railway construction in 1883/1884 and renewed in 2009.
history
The bridges of Arlbergbahn were almost exclusively as a stone arch bridge of unworked stone- built. Steel was only used for large spans, such as the Trisanna Bridge or the Landecker Inn Bridge. The Inn Bridge, built in 1883/1884, was a light steel construction with fish belly girders and a span of 63.7 m at a clearance height of 20.8 m. The inlet route on both sides led over a brick viaduct with seven openings in the west and two in the east. The low axle load of 13 t quickly led to problems in view of the increase in the transported loads and the heavy locomotives required for the mountain route, so that as early as 1904 the supporting structure had to be replaced with a more stable one. The parallel-belt framework with a dead weight of 240 t was pushed in on July 2, 1904. The tracks ran in the middle between the upper and lower chords.
After more than 100 years, the bridge, which was not suitable for higher loads and speeds, had to be replaced. Since the half-timbered bridge in the center of the city was a Landeck landmark, the demand quickly arose to rebuild it in the same form. The ÖBB worked out three designs for steel truss bridges, but due to the changed requirements, they required a great deal of weight and a completely different steel structure and did not convince the city representatives. This is why Hannes Kari designed a steel arch bridge . The masonry viaduct was completely renovated in 2006, and the new bridge was pushed in from April 22nd to 29th, 2009. On April 29, a test load was carried out with three Taurus type locomotives and the bridge was then cleared.
Today's bridge
The arched bridge with elevated roadway has a supporting structure made of two parallel parabolic steel arches that span the Inn without cross girders on the arched posts. The arches have a pentagonal cross-section instead of a rectangular one in order to appear slimmer. The noise barriers form a unit with the bridge and are illuminated at night with a special light design. The arch bridge has a total length of 64 m, a width of 7 m and a weight of 1400 t. The incline of the level is 25 ‰. The new structure was erected around 10 m south of the existing bridge on temporary abutments and pushed in after the old bridge had been removed.
In 2014, the ÖBB was awarded the Brunel Award in the category "Technical Infrastructure and Environment" for the Landecker Innbrücke as the client .
literature
- Karl Schmid, Hannes Kari, Kurt Margreiter: The new Landecker railway bridge over the Inn. In: Stahlbau 78 (2009), pp. 727–732 doi : 10.1002 / stab.200910087
- Mader, Wiesauer: Railway bridge of the Arlbergbahn, railway viaduct. In: Tyrolean art register . Retrieved April 10, 2017 .
Web links
- Landeck Inn Bridge (1884). In: Structurae
- Landeck Bridge (1904). In: Structurae
- Landeck Inn Bridge (2009). In: Structurae
Individual evidence
- ↑ a b New building of the ÖBB Innbrücke Landeck, 2008-2009 , PORR AG