Ilm Valley Bridge
Coordinates: 50 ° 40 ′ 12 ″ N , 10 ° 59 ′ 22 ″ E
| Ilm Valley Bridge | ||
|---|---|---|
 |
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| Convicted |
High- speed line from Nuremberg to Erfurt |
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| Subjugated |
Herrenteiche , Wiesenweg, Bundesstraße 88 , Ilm , Ilmtal cycle path , Langewiesen – Gehren cycle path , Ilmenau – Großbreitenbach railway line |
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| place | City of Langewiesen | |
| construction | Prestressed concrete - box girder bridge , arch bridge | |
| overall length | 1681 m | |
| width | 14.1 m | |
| Longest span | 175 m | |
| Construction height | 5.0 m | |
| height | 48 m | |
| building-costs | 29.2 million euros | |
| start of building | 2007 | |
| completion | 2011 | |
| planner | K + S Ingenieur-Consult GmbH, Nuremberg | |
| location | ||
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The Ilmtalbrücke is a double-track railway overpass on the new Ebensfeld – Erfurt railway line between route kilometers 151.385 and 153.066. With a length of 1681 m, it is the longest of 29 valley bridges along the route and the longest bridge in Thuringia .
The structure is located around one kilometer south of the Ilmenau-Wolfsberg train station and continues the route south. It spans the Ilm Valley with fish ponds between Gehren and Langewiesen , the federal highway 88 relocated in this area , a 110 kV overhead line and the former Ilmenau – Gehren – Großbreitenbach railway line . The federal highway 88 was re- routed in sections in the area of the bridge, the overhead line was routed as a cable during the construction work . The bridge is considered to be the last structure on the northern section of the new line. The beginning of the crossing of the Thuringian Forest follows to the south .
The route runs - at a design speed of 300 km / h - from the southern abutment initially in an arc with a 7000 m radius , which merges into a straight line to the northern abutment via a transition curve . The gradient falls towards the north with 12.5 per thousand and goes north of the northern abutment in a slope of 2.477 per thousand. The bridge has a slab track with a track spacing of 4.5 m as well as noise barriers on both sides with a height of 2.0 m to 4.0 m, on the western side over the entire length.
The planned construction costs were 29.2 million euros . The European Union contributed to the financing with ERDF funds.
construction
The superstructure consists of a chain of four continuous girders , which are 336 m, 415 m, 459 m and 471 m long, separated by three dividing pillars and elevated in areas on three reinforced concrete arches with spans of 125, 155 and 175 m. The cross-section of the superstructure consists of a single-cell prestressed 5.0 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 46 m + 8 × 58 m + (5 × 25 m = 125 m) + 5 × 58 m + (2 × 23 m + 3x21 m + 2 × 23 m = 155 m) + 68 m + 62 m + 2 × 61 m + (7 × 25 m = 175 m) + 3 × 58 m. The bridge has its fixed points on the three arches. In particular, they divert the longitudinal forces from braking into the subsoil. Accordingly, the two separating piers and abutments , the expansion joints with rail expansion joints present.
history
planning
In the route planning in 1995 and 1996, a bridge with a length of 1681 m was planned.
construction
The construction of the Ilm valley bridge was put out to tender in November 2006, the submission took place in February 2007. Construction work began with the construction of the construction site from May to July 2007. Completion should take place by October 2010. A total of around four kilometers of construction roads were built. Some ponds in the catchment area of the piers had to be drained between September 2007 and February 2009.
In July 2007, 70 residential containers were set up for the 120 employees. The preparatory work for the bridge construction should be completed in September, the erection of the bridge piers should then begin (status: July 2007). In mid-August 2007, fish were temporarily relocated from a bathing pond affected by the bridge construction.
An information and lookout point was set up at the Langewiesen sewage treatment plant.
The superstructure was constructed in two sections using the incremental launching method . Around two thirds of the superstructures were advanced from the north, followed by the remaining third from the south. An auxiliary pillar on the middle arch reduced the maximum span of 68 m during construction. The advance of the 32 m long superstructure sections began in August 2008. By July 2008, around two thirds of the southern arch had been completed, it was completed in September 2008, the middle arch followed in spring 2009. In autumn 2009, the incremental shifting work on the northern section was completed.
The last advance of the southern superstructure segment into its final position followed on November 15, 2010. The remaining gap of around two bridge fields was then closed by extending the north superstructure on a ground-supported shoring until March 2, 2011.
Work on the bridge was finished at the end of 2011. The track and catenary system was installed from 2014.
A total of around 44,000 m³ of earth was excavated. A total of around 39,000 m³ of concrete was required for the foundation, arches, pillars and abutments, and around 25,000 m³ for the superstructure (including edge caps). An estimated 7,500 tons of reinforcement and prestressing steel were required.
In the vicinity of the southern abutment, on the connecting road from Langewiesen to Bundesstrasse 88, a rescue area was created below the bridge.
Construction accident
In the late afternoon of September 1, 2008, there was a fatal accident during reinforcement work in the incremental launching system at the northern abutment . The reinforcement cage of a superstructure footbridge fell over. One construction worker was killed and three others, some seriously injured. The cause of the accident was not published. During the approach of a fire engine with a special signal, another fatal accident occurred when an electric scooter driver in Langewiesen was run over by it.
Construction freeze
After around 280 m of the superstructure pushed in by the southern abutment had been built, construction work on the superstructure was stopped on March 15, 2010 due to a chipped piece of concrete from the floor slab with a size of around 5 by 8 m. Around 27 cm of the roughly twice as thick plate had flaked off.
Tendons in an incorrect position were found to be the cause . The tendons were realigned, partially replaced and re-tensioned. Feeding was resumed on August 9, 2010. At that time there were still 13 bars outstanding.
According to the railway, this was the first such incident on a German railway bridge. In the meantime, a model of the clock in its original size had been erected for research purposes.
Construction stages
May 2008
August 2008
March 2009
July 2009
November 2010
Others
- The software company SAP used a picture of the construction site of the Ilm Valley Bridge in 2009 for an advertising campaign with the key message that courage and caution are not mutually exclusive.
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; 948 kB) on vde8.de
- Pictures of the construction site on bastellen-doku.info
Individual evidence
- ↑ a b c d e f g Wolfgang Feldwisch, Olaf Drescher , Mike Flügel: The viaducts of the new and upgraded Nuremberg - Erfurt line . In: Eisenbahntechnische Rundschau , Issue 9/2010, September 2010, ISSN 0013-2845 , pp. 558-567.
- ↑ a b c Information is in the foreground . In: Free Word , September 3, 2007
- ^ A b Deutsche Bahn AG, Kommunikation (Ed.): Railway overpass Ilmtalbrücke . Data sheet, August 2009, two pages. (PDF; 948 kB)
- ↑ Schüßler plan: Route brochure for the new VDE 8.1 line from Breitengüßbach to Erfurt. Published by DB Netz AG Regional Area Southeast. As of June 1st, 2017. p. 116 ( 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.
- ↑ a b The first living containers are coming soon . In: Free Word of July 11, 2007
- ↑ a b Official gap closure at the ICE bridge near Langewiesen . In: Thüringer Allgemeine , March 3, 2011.
- ↑ Planungsgesellschaft Bahnbau Deutsche Einheit mbH, Project Center Erfurt: ABS / NBS Nürnberg-Erfurt-Leipzig / Halle-Berlin (PDF; 2.2 MB). Brochure (15 pages), as of January 1995, p. 12
- ↑ Planungsgesellschaft Bahnbau Deutsche Einheit mbH (ed.): A new railway for Thuringia, Germany and Europe. The new railway line from Ebensfeld to Erfurt . Erfurt, April 1996, p. 11.
- ↑ a b Across the valley every 32 meters . In: Thüringer Allgemeine , July 24, 2008
- ↑ Fish also have to move . In: Free Word from August 15, 2007
- ↑ Ilm Valley Bridge pushes over to the Tragberg . In: Free Word , August 19, 2008
- ^ Deutsche Bahn AG (ed.): Last superstructure advance of the Ilm valley bridge Langewiesen . Press release from November 15, 2010.
- ^ Deutsche Bahn AG (ed.): Closing the gap in the Ilm Valley Bridge Langewiesen in the Ilm district . Press release from March 2, 2011.
- ↑ Handicapped people run over In: Thüringer Allgemeine Online-Ticker , September 2, 2008
- ^ Fatal accident on ICE bridge In: Thüringen Journal , September 2, 2008
- ↑ Heavy reinforcement kills workers / cyclists drive under fire brigade. In: Free Word of September 2, 2008
- ↑ Problems with the construction of the ICE-Ilm-Tal-Brücke . In: Free Word from June 20, 2010
- ↑ Nothing with crumbly concrete . In: Free Word , August 10, 2010
- ↑ a b After construction freeze: ICE bridge near Langewiesen is growing again . In: Thüringer Allgemeine , August 8, 2010
- ^ DB Mobility Logistics AG (Ed.): Advance of the superstructure of the Ilm Valley Bridge near Langewiesen . Press release from August 9, 2010 (offline).
