Pont de la Coulouvrenière
Coordinates: 46 ° 12 ′ 17 " N , 6 ° 8 ′ 23" E ; CH1903: four hundred and ninety-nine thousand seven hundred and fifty-six / 117858
| Pont de la Coulouvrenière | ||
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| use | Road bridge | |
| Crossing of | Rhône | |
| place | Geneva | |
| construction | Concrete arch bridge | |
| overall length | 150 m | |
| width | 26.20 m | |
| Longest span | 40 m | |
| opening | 1857/1896 | |
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The Pont de la Coulouvrenière is a bridge over the Rhone in Geneva , Switzerland . It connects the districts north of the Rhône and in particular the Genève - Cornavin main station with the districts in the south of the river, in particular with the old town Cité . After the Pont du Mont-Blanc, it is one of the most important road bridges in Geneva, which is also used by four tram lines .
location
It lies between the Ile (island) and the former Bâtiment des Forces motrices , today's Salle Théodore Turrettini . It crosses the arms of the Rhône, which are separated from the Ile , as well as the pedestrian promenade and Quai du Seujet / Quai Turrettini on the north bank of the river. There are stairs down to the quais and a flight of stairs in the middle of the east side down to the Promenade des Lavandières and Place de l'Ile .
history
The first bridge, opened in 1857, consisted of an iron structure supported on ten yokes , but it was too weak for steam-powered trams.
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At the instigation of the city and administrative council Théodore Turrettini , a new building was therefore decided in 1894, whereby after discussing various construction methods, the decision was made to use an arched bridge made of concrete with a cladding of natural stone. The construction, which began in 1895, was opened in time for the state exhibition on April 27, 1896. In 1970 the bridge was extended to allow wider sidewalks . In 1995 she received tram tracks again and in 2001 the metal footbridge to the Promenade des Lavandières .
technical description
The 150 m long bridge has two large, 40 m wide segmental arches over the two arms of the Rhône, a central pillar with a small round arch for the pedestrian connection between the Ile and the Salle Théodore Turrettini, and a basket arch over the bank road. When discussing the construction methods to be used, the Monier and Hennebique methods were also examined, but the decision was made to use a pure concrete construction with three-hinged arches based on the system developed by Karl von Leibbrand . The Pont de la Coulouvrenière is one of the first three-hinged arch bridges made of concrete. On the left bank of the Rhône, the bridge had to be built on around 400 piles, otherwise the ground was sufficiently stable for the load of 3.5 kg / cm². Sand and gravel were taken from the stone pine and mixed in a ratio of 5: 8. Depending on the load, between 425 kg and 200 kg of cement were used per cubic meter of concrete . With the help of mixing machines that were modern at the time, up to 200 m³ of concrete could be placed per day. The sidewalks, which were added in 1970 and cantilevered over a total of 26.20 m, were made of reinforced concrete .
Web links
Individual evidence
- ↑ Pont de la Coulouvrenière 1894
- ↑ a b About the new construction of the Coulouvrenière Bridge in Geneva. Lecture on Prof. W. Ritter's lecture to the Zurich Engineers and Architects Association at the 8th meeting on March 4, 1896. In: Schweizerische Bauzeitung of April 4, 1896, issue 14, p. 100 f; on e-periodica.ch (PDF; 1.8 MB)