Fulda valley bridge Morschen

Coordinates: 51 ° 4 ′ 9 ″  N , 9 ° 35 ′ 2 ″  E

Fulda valley bridge Morschen
Convicted	High- speed line from Hanover to Würzburg
Subjugated	B 83 , railway Kassel-Bebra , Fulda , L3427
place	Rotten
construction	Prestressed concrete - box girder bridge
overall length	1450 m
width	14.30 m
Longest span	116 m
Construction height	5.3 m (other source: 5.0 m)
height	75 m
start of building	1986
completion	1989
location

The Fuldatalbrücke Morschen is a 1450 m long double-track railway overpass structure on the high-speed line Hanover – Würzburg at distance kilometers 173.8.

The girder bridge is located in northern Hesse near Melsungen and spans at a maximum height of 75 m above ground between Morschen and Binsförth the Fulda with the parallel federal highway 83 and the Kassel – Bebra railway . It is the second longest bridge on the high-speed line. At around DM 60 million, it was the most expensive and, at around 70,000 m³ of concrete and 9,100 t of reinforcing steel, the largest bridge on the new line.

The gradient of the route rises continuously in a southerly direction on the bridge. In the planning phase, the structure was in planning section 14 in the middle section of the route. The railway overpass was built between 1986 and 1989.

Substructures

Fulda bridge with ICE 2 seen from the south end

In the middle of the bridge over the Fulda there is an arched A-frame with a span of 116 m, which corresponds to twice the span of the normal fields. This is a fixed point of the bridge and in particular transfers the longitudinal forces due to braking from the superstructure coupled in the longitudinal direction into the subsoil. The A- frame has a hollow cross-section made of reinforced concrete and is founded on a foundation together with the two adjacent pillars.

The rectangular reinforced concrete pillars with a maximum height of 69 m have a box girder cross-section with the dimensions 7.6 m × 3.5 m at the pier head. They taper upwards with a suit of 80: 1.

A total of 12,000 m³ of concrete and 1,600 t of reinforcing steel were required for the pillars and A-frame. The first four pillars are founded flat on Quaternary layers of sandy or stony silt . The remaining 20 pillars stand on large bored piles with a diameter of 1.5 m and a total length of 6,915 m, which are embedded in solid clay or sandstone layers .

superstructure

Cross section of the superstructure

The superstructure consists of a chain of 25 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. With a superstructure width of 14 m, the spans are uniformly 58 m. The constant construction height of 5.3 m (1/11 of the span) is relatively high due to the required rigidity to limit deflection.

The tonnage of the longitudinal prestressing of the superstructure is 910 t, the transverse prestressing 145 t.

execution

The A-frame was erected in a guyed cantilever . The superstructure was concreted field by field with a feed scaffold that had previously been used on the Bartelsgraben valley bridge , concreted every three weeks.

The pillars have a hollow cross-section and were erected with an automatic climbing formwork in five-meter sections every two days. The intermediate landings arranged at a distance of five meters were made with precast concrete parts.

Others

The Fulda Valley Bridge in Morschen crosses two 110 kV power lines, namely the Fulda – Körle traction power line and the Blankenheim – Waldkappel three-phase power line running parallel to it.

source

• Ernst Rudolph: Railway on new paths. Hestra Verlag Darmstadt, 1989, ISBN 3-7771-0216-4

Web links

Commons : Fuldatalbrücke Morschen  - Collection of images, videos and audio files

Individual evidence

1. ^ ^{A b c d e f} Philipp Holzmann AG, Frankfurt: Fulda valley bridge Morschen , company brochure, six pages, no year
2. ↑ Bundesbahndirektion Frankfurt (M), project group NBS Frankfurt am Main of the Bahnbauzentrale (publisher): New lines Hanover-Würzburg from Kassel to Fulda, Cologne - Rhine / Main in the directorate area. Leaflet with 12 pages (10x21 cm), Frankfurt am Main, no year (approx. 1984)