Magdeburg Canal Bridge
Coordinates: 52 ° 13 ′ 51 ″ N , 11 ° 42 ′ 5 ″ E
| Magdeburg Canal Bridge | ||
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| Convicted | Mittelland Canal | |
| Subjugated | Elbe , km 339.11 | |
| place | Hohenwarthe , Glindenberg | |
| construction | Steel trough bridge | |
| overall length | 918 m | |
| width | 43.0 m | |
| Longest span | 106.20 m | |
| Construction height | 8.15 m | |
| start of building | 1998 | |
| completion | 2003 | |
| location | ||
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The Magdeburg Water Bridge , with a length of 918, the largest canal bridge in Europe and part m of the waterway intersection Magdeburg . The trough bridge structure leads the Mittelland Canal at river kilometer 339.11 over the Elbe .
history
To connect the Elbe-Havel Canal with the Mittelland Canal, the construction of the canal bridge began in 1934 according to planning in the 1920s. The structure was planned for a clear trough width of 29.7 m with a channel depth of 2.75 m. The river bridge over the Elbe was to be a three-span 280 m long steel structure with a maximum span of 106 m. The main girders were two 9.3 m high lattice girders on each side, on the lower chords of which a maximum of 4.4 m high and 36.3 m long cross girders with the trough load were to be placed. The approach bridge was planned as a series of 20 arched bridges made of reinforced concrete with standard support widths of 34 m. The construction work was stopped in 1942 due to the war. At this point the abutments , the pillar foundations and four arches were made. The construction of the bridge was not resumed later.
After reunification, planning of the bridge began in 1993 as part of the German Unity Transport Project No. 17. On September 30, 1996 the planning approval decision for the waterway intersection was available. The old components were blown up and the 53,000 m³ of concrete and reinforced concrete building rubble used as a substructure for construction site facilities. The contract to build the bridge was placed on December 15, 1997 for 210 million DM. The foundation stone was laid in the summer of the following year and the traffic handover took place on October 10, 2003. The construction costs for the bridge amounted to approx. 130 million euros. The total costs for the waterway cross were put at more than 500 million euros.
construction
Design parameters
The minimum passage width on the Elbe was 90 m and the minimum passage height at the highest navigable water level was 6.5 m. Due to the lock cycle of 30 minutes at the neighboring Hohenwarthe lock , it was not necessary to design the canal bridge for two-aisled traffic with a trough width of 44 m. Therefore, a trough width of 34 m with a water depth of 4.25 m and a usable width of 32 m was chosen.
Power bridge
- superstructure
The river bridge, a steel girder bridge, has a structural system in the longitudinal direction with a three- span continuous beam with a total span of 227.4 m. In the two peripheral fields the span is 57.1 m and in the middle field 106.2 m. There is a trough cross-section in the transverse direction. The outer longitudinal beams on both sides have a construction height of 8.15 m and are designed as 4.0 m wide hollow boxes, on the outer side as a stud framework with struts falling towards the center and on the inner side (trough wall) as a solid wall construction. The longitudinal girders are connected to one another by 1.9 m high cross girders, which are arranged 3.54 m apart in the main field and remove the trough floor.
- Construction work
The steel superstructure was delivered by truck in individual parts with a maximum weight of 150 t. The final welding took place on the eastern abutment on an 85 m long shunting track. The incremental launching method was used to assemble the bridge . It was pushed across the middle of the river with the help of a pontoon . 9,500 tons of structural steel were used.
Foreland bridge
- superstructure
The 690.65 m long foreland bridge is separated from the river bridge by an expansion joint above the pier. The 16-span steel girder bridge is a structural system in the longitudinal direction with continuous girders with standard spans of 42.85 m. There is a trough cross-section in the transverse direction. The external longitudinal members on both sides have a construction height of 8.15 m and are designed as a solid wall construction, box-shaped in the upper area. The longitudinal beams are connected to one another by nine 2.3 m high cross frames. Due to the short span, the water load on the trough floor is mainly carried by seven 1.9 m high longitudinal beams.
- Construction work
The steel superstructure was delivered in individual parts in lengths corresponding to the standard support width of 42.85 m, mostly by ship. A crawler crane lifted the individual components and then welded them together. 12,400 tons of structural steel were used.
particularities
The ice-free system in winter is worth mentioning. For this purpose, air is blown into the water on the channel sides. The rising bubbles prevent ice formation between the trough wall and the water surface. This means that the ice cannot push the trough walls apart.
Calotte bearings with a diameter of 2.18 m for a vertical load of 135 MN are installed above the current pillars .
literature
- Magdeburg waterway intersection. (PDF; 3.3 MB) Federal Waterways and Shipping Administration, Waterways and Shipping Directorate East, Magdeburg 2011
- Canal bridge over the Elbe. Magdeburg waterway intersection. (PDF; 884 kB) Magdeburg Waterways Construction Authority, Magdeburg 2002
- Dieter Eichler, Alfons Emge, Saizhong He: Design and construction of the canal bridge over the Elbe. In: Der Stahlbau , Volume 70 (2001), Issue 1, pp. 3–10.
- Manfred Grassl, Thomas Menzel, Michael Mündecke: Magdeburg Canal Bridge. Draft planning, tendering, status of construction. In: Der Stahlbau , Volume 68 (1999), Issue 9, pp. 693–702.
Web links
- Magdeburg Canal Bridge. In: Structurae
- Preparation and construction of the canal bridge over the Elbe ( Memento from August 2, 2014 in the Internet Archive ) (PDF file, approx. 3.5 MB)
- Storage, storage and storage of the canal bridge over the Elbe ( Memento from August 2, 2014 in the Internet Archive ) (PDF file, approx. 0.9 MB)
Individual evidence
- ↑ Magdeburg Waterways Construction Office
- ↑ WNA Magdeburg data sheet
- ↑ Mitteldeutsche Zeitung: Report on the drainage in 2008
| upstream | Bridges over the Elbe | downstream |
| Hohenwarthe Elbe Bridge | Magdeburg Canal Bridge |
Tangermünde Elbe Bridge |