Stöbnitztal Bridge
Coordinates: 51 ° 19 ′ 53 ″ N , 11 ° 46 ′ 11 ″ E
| Stöbnitztal Bridge | ||
|---|---|---|
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| use | New Erfurt – Leipzig / Halle line | |
| Subjugated | Stöbnitz | |
| place | near Oechlitz in the Saalekreis | |
| construction | T-beam bridge | |
| overall length | 297 m | |
| width | 13.72 m | |
| Longest span | 24 m | |
| Construction height | 1.95 m | |
| height | 14 m | |
| start of building | March 1, 2008 | |
| completion | Spring 2012 | |
| location | ||
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The Stöbnitztalbrücke is a 297 m long railway overpass on the new Erfurt – Leipzig / Halle line over the Stöbnitz near Oechlitz . The award procedure began on July 30, 2007, construction began on March 1, 2008. The structure should be completed on December 31, 2009. Work on the bridge was finished in spring 2012.
Pre-planning
In the area of the Stöbnitztalbrücke the railway line has a gradient of 11.3 ‰ in the direction of Leipzig and has a track center distance of 4.5 m. The girder bridge, which is only 14 m high, was chosen to replace a dam for ecological reasons. Due to the low height, the planning provides for a superstructure with a low construction height from an aesthetic point of view. As a type of construction, a slab with cast-in rolled girders (system "rolled girder in concrete") was envisaged in the design planning, which is often used for street underpasses in cities, but rarely for long bridges. The tender was a prestressed continuous beam with a flat T-beam as a superstructure cross-section in solid construction, with bearings and joints .
According to the planning status from mid-1995, the 297 m long structure should be located on the southern edge of the planning approval section 2.4 of the new line, between construction kilometers 66.90 and 67.20.
execution
The structure lies between the route kilometers 258.018 and 258.315.
A special proposal from the construction company was implemented. The operator hopes that this will result in cost advantages in construction and maintenance as well as an improvement in the aesthetic effect.
The design has a 297 m long prestressed two-legged T-beam bridge as the superstructure, which rests on pairs of round columns with full cross-sections and the abutments and is monolithically connected to them. The frame-like continuous beam system has no bearings . Originally, a construction height of 1.25 m was planned for the superstructure. This had to be increased to 1.95 m because the rigidity was insufficient to be able to provide the verifications from the dynamic effects caused by the high-speed traffic.
In the longitudinal direction, the bridge consists of four sections, which are separated by joints with compensating plates on the slab track above the three pairs of vertically slotted columns. The two subsystems at the bridge ends consist of two fields with lengths of 22.0 m and 24.0 m. The two middle sections are 102.5 m long and have spans of 2 × 24.0 m, 6.5 m and 2 × 24.0 m. The transfer of the horizontal forces in the longitudinal direction of the bridge, for example the braking forces, takes place in a central bridge section via the pair of double supports, which have a center distance of 6.5 m and is based on pile head plates with pile gratings. In the edge sections, the horizontal forces are introduced into the abutment in the longitudinal direction.
The bridge was founded on large bored piles with a diameter of 1.5 m and a maximum length of 30 m in the decomposed claystone of the Upper Buntsandstein . The superstructure was built with a section-by-section falsework .
literature
- Rolf Jung, Steffen Marx, Marcus Schenkel, Rico Stockmann: Design and implementation planning of the Stöbnitztalbrücke . Concrete and reinforced concrete construction 106 (2011), Heft 2, pp. 81–88.
Web links
- Pictures of the construction site on bastellen-doku.info
Individual evidence
- ↑ Specification text of DB Projektbau GmbH Leipzig from March 28, 2007
- ↑ Pictures of the construction site
- ↑ Viaduct new line Erfurt - Leipzig / Halle. Cancer and Jaws, archived from the original on April 28, 2016 ; accessed on November 19, 2019 (original website no longer available).
- ^ Planungsgesellschaft Bahnbau Deutsche Einheit , Projektzentrum Leipzig (Ed.): Transport project German Unity - Rail No. 8: ABS / NBS Nuremberg - Erfurt - Halle / Leipzig - Berlin: Section Erfurt - Leipzig / Halle: Figures and facts . 20-page brochure, Leipzig, August 1995, p. 8 f., 13.
- ↑ Bärbel Jossunek, Vasco P. Kolmorgen, Alexander Wolf: route brochure New Erfurt - Leipzig / Halle. (PDF) (No longer available online.) In: DB Netz; Infrastructure & technology; Customer information. Railway concept, August 13, 2015, p. 175 , archived from the original on August 16, 2015 ; accessed on August 15, 2015 . 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. P. 43
- ↑ Steffen Marx , Jörg Schlaich : Gestalten von Eisenbahnbrücken , doi : 10.1002 / stab.200910019 . In: Stahlbau , ISSN 0038-9145 , 78 (2009), issue 3, pp. 197-202
- ↑ Hartmut Freystein: Developments and tendencies in railway bridge construction . In: Der Prüfingenieur , April 2011, p. 35 ( Memento of the original from April 17, 2015 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; 2.8 MB)
- ↑ Krebs und Kiefer website: New line Erfurt - Leipzig / Halle Stöbnitztalbrücke ( memento of the original from November 27, 2015 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; 862 kB)
