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Overpass at Gataia [ completed ]
Date of completion : 2005-01-05
Beneficiary : Regional Administration of Roads and Bridges Timis
Project type : Feasibility study
Project leader : conf. dr. ing. Adrian Bota
The designed work aims the replacement of two intersections at same level with the rail road situated at a distances of approximately 200 m, with an overpass. Alternatives with prestressed concrete superstructure respectively embedded steel girders were studied. Both solutions did not include footways and the infrastructure was founded directly or indirectly.
The indirect foundation system is realized with cast in place concrete piles of big diameter (columns). The columns are about 9 m long, distributed on two parallel rows, namely 6 pieces at the abutments and 8 pieces for each pier, at the top being embedded in a reinforced concrete girder.
The elevation of the piers, the abutment wall, the retaining wall the bearing bench and the bolsters will be made out of concrete. The static schema of the infrastructures is a frame with two piers, embedded in the foundation mat in which the ends of the columns are embedded.  

The piers realized as frames with two pillars, are designed in such manner as the distance between the piers permits the development of traffic under the overpass, between these.
The static schema of the designed overpass, in this variant, is a sequence of 3 continuous slabs with 5, 8 respectively 5 spans.

The overpass is designed curved in space with radiuses between 1300 and 4500 m vertically, respectively 540 m horizontally.  In this configuration the length of the superstructure is 428,50 m, and the entire length of the overpass (including the approach slopes) is 687,80 m.

The total width of the superstructures is 9.96 m out of which 9,00 m covers the gauge.
The discharge of the waters from the bridge is solved with outflows placed on each direction in a distance of maximum 8 m, 2 x 2 on each span. It will be discharged in a discharge pan placed on each side of the overpass. These will be discharged by means of PVC tubes in the collecting and discharging system for used waters in the city.
The local traffic will develop under the overpass, between the piers, on a minimum free distance of 7,00 m, 6,00 m being the gauge. The minimum gauge for free passing is 3,80 m, while the maximum gauge reaches up to 7,10 m.
In this conditions, on both sides of the approaching slope will be normal traffic conditions for the local traffic (pedestrians and vehicles).