Pont de Gilly
Coordinates: 45 ° 39 ′ 9 ″ N , 6 ° 21 ′ 25 ″ E
| Pont de Gilly | ||
|---|---|---|
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| use | Road bridge | |
| Convicted | D 64 | |
| Crossing of | Isère , N 90 | |
| place | Gilly-sur-Isere | |
| construction | Cable-stayed bridge | |
| overall length | 170 m | |
| width | 12.3 m | |
| Number of openings | 2 | |
| Longest span | 103 m + 67 m | |
| start of building | 1989 | |
| completion | 1991 | |
| planner | J. Tonello | |
| location | ||
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The Pont de Gilly is a road bridge that crosses the Isère and the four-lane route nationale N 90 southwest of Albertville in the Savoie department ( France ) and the suburb of Gilly-sur-Isère with the areas on the left as part of the D64 department road Riverbank connects.
It was built as part of the preparations for the 1992 Winter Olympics and replaced the old bridge to enable crossing of the N 90 without crossing.
description
The Pont de Gilly is a two-lane road bridge with a walkway separated by a strong railing on the northeast side.
The single-hip, asymmetrical cable-stayed bridge spans the Isère with its 103 m long part of the bridge deck, while the 67 m long part on the other side of the pylon spans the N 90 with its northern access lane. The entrances and exits on the southern side are connected to the bridge deck by 75 m long ramp bridges, where they form an intersection with the D 64 right next to the pylon.
The pylon stands on the dike between the Isère and the N 90. It consists of two reinforced concrete pillars that are slightly inclined towards each other and are connected and stiffened in the upper area with diagonal and horizontal steel struts. It towers over the bridge deck by 40 m. The pylon is inclined by 20 ° over the shorter bridge deck and thus compensates for the different forces in the stay cables resulting from the differences in length. Unlike usual, the pylon is not built into the ground, but is supported on two support blocks in conjunction with the bridge deck.
The stay cables are arranged parallel to each other in the upper area in the harp system, but below in the fan system with different inclinations. This achieves the same spacing between the fastening points on the bridge deck, but when looking at the bridge from different angles, there are numerous overlaps between the ropes.
The bridge deck consists of a continuous prestressed concrete - T- beam with cross webs, which is supported on the abutments and, together with the pylon, on the support blocks. It is 12.3 m wide and 1.9 m high.
The bridge deck and the pylon were initially built next to the dike parallel to the river. The pylon, which was initially built vertically, weighed 900 t and protruded 40 m above the bridge deck, was only later lowered into the intended inclined position. Then the almost complete bridge was turned into its final position. Then the two ramp bridges were added and the remaining work was done.
Web links
Individual evidence
- ↑ Pont de Gilly on the website of the statics office SETEC TPI
- ↑ Michel Placidi: Presentation à la Rencontre Annuelle des Anciens Elèves de l'Ecole des Mines d'Alès, Groupe Professionel Génie de la Construction Powerpoint presentation from October 17, 2013 (440 kB)
- ↑ Les Ouvrages mis en place par déplacement , ( Memento of the original dated August 12, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. P. 132 to 144, on the Académie Nancy-Metz website (PDF, 637 kB)
- ↑ Les Ouvrages mis en place par déplacement , ( Memento of the original dated August 12, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Pp. 174 to 182, on the Académie Nancy-Metz website (PDF, 637 kB)
