Leinachtal Bridge

Leinachtal Bridge
Convicted	; High- speed line from Hanover to Würzburg
place	west of Zellingen
construction	Prestressed concrete - box girder bridge
overall length	1232 m
Longest span	44 m
Construction height	4.0 m
height	33 m
start of building	1984
completion	1986
	location

49.876111111111 9.8005555555556Coordinates: 49 ° 52 ′ 34 ″ N , 9 ° 48 ′ 2 ″ E

The Leinachtalbrücke is a 1232 m long double-track railway overpass on the high-speed line Hanover – Würzburg at a distance of 313.4 kilometers.

The railway overpass was built between 1984 and 1986, the cost was about 29 million DM.

Location and course

The shell of the bridge was completed at the end of May 1986

The girder bridge is located in Lower Franconia west of Zellingen and spans the valley of the Leinach, the country road from Zellingen to Leinach and a few field and farm roads . The track is at a maximum height of 33 m above the valley floor.

The route describes a straight line throughout. The gradient rises continuously at 12.5 per mil.

The structure is followed to the north by the Bartelsgraben valley bridge , to the south by the Espenloh tunnel .

history

In the planning and construction phase, the bridge was at construction kilometers 296 and 297.

The planning status from the end of 1977 provided for a length of 1364 m for the structure with the same route and gradient.

construction

The bridge superstructure consists of a chain of 28 single-span girders . This enables individual bridge segments to be replaced later. The cross-sectional shape is a single-cell reinforced concrete box with inclined webs, prestressed in the longitudinal direction . In addition, the deck is prestressed in the transverse direction. The span is uniformly 44 meters with a superstructure width of 14.3 meters. The constant construction height of 4.0 meters is relatively high due to the required rigidity for the purpose of deflection limitation. The 27 reinforced concrete piers have a cross-section width of 6 meters at the pier head and are 4 meters thick there, as four bearings are required for the single-span girders .

Cross section of the superstructure

The pillars have a height of up to 29 m and are founded on inclined piles to ensure sufficient rigidity for the single-span girder chain. The relatively "massive" pillars (lengthways spacing 44 m) due to the space required for two rows of warehouses were accepted by the client in the purely agricultural valley, which was "not demanding from a landscape design point of view".

literature

Knut Reimers and Wilhelm Linkerhägner: Paths into the future. New construction and expansion lines of the DB . Hestra Verlag Darmstadt 1987, ISBN 3-7771-0200-8

Web links

Commons : Leinachtalbrücke - collection of images, videos and audio files

Individual evidence

↑ ^a ^b Helmut Maak : The new federal railway line between Main and Spessart (southern section Hanover – Würzburg) . In: Internationales Verkehrwesen , Volume 36 (1984), Issue 2 (March / April), pp. 126–132, ISSN 0020-9511
^ Helmut Maak : The draft of the new Hanover - Würzburg line, section of the Hessian / Bavarian border - Würzburg . In: Die Bundesbahn , year 53 (1977), issue 12, pp. 883-893, ISSN 0007-5876
^ Helmut Maak: Design and integration of the landscape of the new lines of the German Federal Railroad . In: Concrete and reinforced concrete construction . 81st year (1986), No. 2, pp. 49-53

[ivv-36-126-1] Helmut Maak : The new federal railway line between Main and Spessart (southern section Hanover – Würzburg) . In: Internationales Verkehrwesen , Volume 36 (1984), Issue 2 (March / April), pp. 126–132, ISSN 0020-9511

[bundesbahn-53-883-2] Helmut Maak : The draft of the new Hanover - Würzburg line, section of the Hessian / Bavarian border - Würzburg . In: Die Bundesbahn , year 53 (1977), issue 12, pp. 883-893, ISSN 0007-5876

[bts-81-2-49-3] Helmut Maak: Design and integration of the landscape of the new lines of the German Federal Railroad . In: Concrete and reinforced concrete construction . 81st year (1986), No. 2, pp. 49-53