Grümpentalbrücke
Coordinates: 50 ° 23 ′ 25 ″ N , 11 ° 2 ′ 8 ″ E
| Grümpentalbrücke | ||
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| Convicted |
High- speed line from Nuremberg to Erfurt |
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| Subjugated | Bundesstrasse 89 , Eisfeld – Sonneberg railway line | |
| place | Grumble | |
| construction | Reinforced concrete arch bridge | |
| overall length | 1104 m | |
| width | 14.10 m | |
| Longest span | 270 m | |
| Construction height | 3.6 m | |
| height | 71 m | |
| vehicles per day | railroad | |
| building-costs | 20 million euros (planned) | |
| start of building | 2006 | |
| completion | 2011 | |
| location | ||
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The Grümpentalbrücke is a 1104 m long double-track railway overpass structure on the new Ebensfeld – Erfurt line between kilometers 120.161 and 121.265. With an arch span of 270 meters with the same span as the neighboring Froschgrundsee viaduct, it is the longest arched railway bridge in Germany and replaced the previous record holder, the Wilde Gera motorway bridge . In Europe, only the Almonte railway bridge in Spain, which opened in 2016, is longer.
The bridge is located two kilometers east of Schalkau near Grümpen in the Sonneberg district ( southern Thuringia ) at the foot of the Thuringian Forest in the Schalkau Plateau . The overpass structure spans, among other things, the Grümpen brook , the 34 district road from Grümpen to Almerswind , a 110 kV overhead line , the 89 federal road and the Eisfeld – Sonneberg railway line . In order to minimize the interference with the landscape, the wide arch was chosen in the valley of the Grümpen. South of the bridge is the 745 m long Müß tunnel and north of the 1317 m long Baumleite tunnel .
The track line is at a design speed of 300 km / h in a building area with a radius of 6640 m, followed by transition bend curved, the gradient increases in the direction of the north with 12.5 parts per thousand. With the expansion of the route, the bridge has received a noise protection wall 2.0 m above the top of the rails on the eastern side and 1.0 m high on the western side as well as a slab track with 4.5 m track spacing. Construction began in the summer of 2006 with the construction of the site , took five years to complete and was completed in 2011. The work was originally supposed to be finished in 2009. With the project management was DB ProjektBau from the DB Netz commissioned. The investment volume should amount to 20 million euros .
Substructure
The pillar of the bridge have a rectangular reinforced concrete hollow cross-section with broken corners and tapered with a suit of 70: 1 upwards. With the exception of the two dividing pillars with the external dimensions of 4.0 m × 5.8 m (width × depth) at the pier head, the dimensions of the other 17 standard pillars are 2.7 m × 5.8 m. The eight stands on the arch do not have a suit, their dimensions are constant 2.0 mx 4.8 m. The reinforced concrete arch with a span of 270 m and a pitch of approximately 63.4 m also has a hollow cross-section and is accessible. At the apex, the external dimensions of the rectangular cross-section are approximately 5.9 m × 4.5 m (depth × height), in the fighter it is approximately 7.4 m × 6.5 m. The bridge has three fixed points, two are the abutments, one is the arch. In particular, these diverted the longitudinal forces from braking into the subsoil. Accordingly, there are expansion joints with rail extensions and compensation plates on both separating pillars . The bulkhead foundations are 25 m deep with lean concrete cushions on the rock, the foundation of the pillars usually consists of large bored piles .
The structure is based on sandstone with intermediate layers of clay sandstone ( middle and upper red sandstone ).
superstructure
The superstructure consists of a chain of three continuous girders , which are 219 m, 446 m and 439 m long and connect to each other above the two dividing pillars. In cross-section, the superstructure consists of a single-cell prestressed 3.6 m high reinforced concrete box girder with inclined webs, prestressed in the longitudinal direction . In addition, the deck is prestressed in the transverse direction. The floor slab is 4.8 m wide, the deck slab 13.3 m wide. The spans are 43 m + 6 × 44 m + (9 × 30 m = 270 m) + 11 × 44 m + 43 m.
history
planning
The planning approval for the section of the bridge took place on May 24, 1995. The draft planning followed in large parts of the framework design planning of the Deutsche Bahn for valley bridges. Different versions of girder bridges were discarded for design reasons. Arch bridges with spans between 132 and 270 m were then examined. A variant that, in addition to the implemented 270-meter arch over the Grümpental, also included an additional 132-meter arch over the neighboring side valley, was discarded for economic and technical reasons. The preferred variant was chosen with an arch spanning 270 m and approach bridges of 307 m in the south and 527 m in the north.
Construction and construction supervision were tendered at the end of 2005 and awarded in February 2006.
Construction work
For the construction, 34,000 m³ of concrete will be used for the foundation, arches, pillars and abutments as well as 14,700 m³ for the superstructure with edge caps. In addition, around 6,000 tons of reinforcing and prestressing steel were used. An excavation of 65,000 m³ of earth was required for the foundations. The arch was built in sections on a falsework on auxiliary pillars made of reinforced concrete, which were blown up after the superstructure was completed. The falsework was pulled up onto the pillars with strand jacks and then lowered again; the longitudinal shifting took place on a sliding track at the bottom. After concreting the fourth arch section in September 2008, the approximately 60 m long falsework was lowered and turned. This was followed by assembly on the south-eastern fighter foundation, which is the starting point of the fifth arch section. The last arch section was concreted at the end of October 2009. The arch was self-supporting about 14 days later when the jacks on the auxiliary piers were lowered. On November 12, 2009, the last two cubic meters of concrete for the arch were symbolically poured. The bridge superstructure is constructed field by field with the help of a feed scaffold, starting at the northwestern abutment.
Among other things, a 100 m high free-standing tower crane with a 70 m long boom was used, which was shifted lengthways as construction progressed. On July 9, 2007, the western bulkhead foundation with 1000 m³ of concrete was built in 24 hours. From November 12 to 16, 2008, the lean concrete cushion for the second transom foundation with a volume of 5000 m³ was concreted.
In June 2010, half of the superstructure was built over the arch. On November 8, 2010 the eight auxiliary piers with heights of 20 to 60 m and a total concrete volume of 1800 m³ were blown up with a total of 100 kilograms of explosives. At the beginning of December 2010, the last section of the superstructure on the southern abutment was concreted. At the end of 2011, the work on site was completed with a delay of over two years.
gallery
Construction status
August 2008
Construction status
March 2009
Construction status
September 2009
Construction status
June 2010
June 2012
literature
- W. Heine, H.-J. Jonas, M. Kästner, E. Lederhofer, R. Wiest: ICE route Nuremberg – Erfurt. Arch bridges over the valleys of the Thuringian Forest . In: civil engineer . No. 3/2015 . Springer-VDI-Verlag, March 2015, ISSN 0005-6650 , p. 104-114 .
Web links
- Brochure (PDF; 1.7 MB) on vde8.de
- Construction of the building
- Pictures of the construction site on bastellen-doku.info
Individual evidence
- ↑ a b c d e f g Martin Schnellhardt: Planning and construction of the Froschgrundsee viaduct and the Grümpentalbrücke - wide-span arch bridges in the course of the new railway line (sic!) Ebensfeld-Erfurt. In: 19th Dresden Bridge Construction Symposium: Planning, construction, repair and upgrading of bridges, 9./10. March 2009. pp. 99-110.
- ↑ Wolfgang Ellinger: Specialized excursion Blessberg tunnel: ICE –Track Thuringian Forest. ( Memento of the original from November 11, 2012 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (PDF; 512 kB) In: VDI Information. 3/2007, p. 18 f.
- ↑ Grümpentalbrücke on structurae.de (accessed on November 19, 2016)
- ↑ a b Concreting work for the second foundation of the Grümpental Bridge . Press release from November 9, 2007
- ↑ Wolfgang Feldwisch, Olaf Drescher, Mike wing: The valley bridges of the new and upgraded line Nuremberg - Erfurt. In: Railway technical review . Issue 9/2010, September 2010, ISSN 0013-2845 , pp. 558-567.
- ^ Deutsche Bahn AG: http://www.deutschebahn.com/site/bahn/de/unternehmen/presse/presseinformationen/ssat/ssat20091112b.html . Press release from November 12, 2009
- ↑ Kilometers of superlative railway bridge ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. . In: Nürnberger Nachrichten . June 22, 2010.
- ↑ www.deutschebahn.com: Press information 184/2010 , November 5, 2010
