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The Gazela bridge

The bridge "Gazela" represents the combination of beam and arch. From the static point of view this is a shallow frame 332 m long.


  • Location: Belgrade
  • Total cost of project: N/A
  • Years of construction: 1966 - 1970
  • Category: Bridges
  • Status: Finished
  • Area: Unknown
  • Contractor: Directorate for Bridge Construction, Mostogradnja

Detail design:
Directorate for Bridge Construction

Sub-contractor:
Pleskar, Tekol, Jugofund, MIN, GOSA, Partizanski put

Author:
Academician Milan Djuric

Designer:
Academician Milan Djuric

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Information

The beam is supported at the distance of 63 m from uprights towards the centre by the hinge on to the inclined piers which are positioned at the angle of 29o with the horizontal line.

On the shore piers in the frame extension two simple beams are used with the span of 70 m each for joining the steel bridge with concrete approaches.

§ The bridge width is 27.50 m and it consists of two carriage-way directions 10 m wide each, the verge in the middle 1.5 m wide and two footways 3 m wide each.

§ The bridge structure is welded and riveted from the steel quality CN-25 and CN-35. The bride deck, the bottom box plate as well as the vertical webs are orthotropic slabs. The tin thickness is from 10 to 40 mm. The total weight of the steel structure is 6,050 tons.

§ The erection of the middle part of the structure was performed by the system of simple mounting with the help of floating crane, whereas for the shore piers the steel scaffold and the truck cranes capacity 60 tons with the jib 30 m long were used. The assembly elements 15 to 25 m long weighed 6 to 5 tons.

§ The founding of the oblique columns and the first uprights was performed on both banks, on the common foundation - the caisson of the outer dimensions 40.5 x 24.6 m which can withstand great horizontal forces and moments. The caissons were filled with 9,200 m3 of reinforced concrete, 13,000 m3 concrete as chamber filling and 720 tons of reinforcement. The massive piers at the place of crossing from steel to concrete structure, were founded on Franci piles.

§ Characteristics: total built surface 13,219 m2, maximum span 249.92 m, road width 21.8 m, maximum height: (span centre) 22.78 m above mid water.

 

Images source: wikipedia


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