Bridge over the River Ferreira, Spain
The purpose of this bridge is to improve the intersection of the CN.540 road, from Lugo to Orense, with the 547 road. The chosen structural type meets the conditions of quick construction and cheapness that were paramount in this case. The superstructure of the bridge consists of six intermediate pi...
| Published in: | Informes de la Construcción |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | Spanish |
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Consejo Superior de Investigaciones Científicas
1968
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| Online Access: | https://informesdelaconstruccion.revistas.csic.es/index.php/informesdelaconstruccion/article/view/3781 https://doi.org/10.3989/ic.1968.v21.i206.3781 |
| Summary: | The purpose of this bridge is to improve the intersection of the CN.540 road, from Lugo to Orense, with the 547 road. The chosen structural type meets the conditions of quick construction and cheapness that were paramount in this case. The superstructure of the bridge consists of six intermediate piles, and two abutments, which support seven straight spans with metallic longerons and reinforced concrete deck. The span over the river is 21 m long, and de others, all equal, are 15 m long.The total deck width is 9 m, of which 7 m are for road pavement, and 1 m on each side is reserved for pedestrians sidewalks. The reinforced concrete piles form portal frames, and have circular supports and rectangular dintels. The foundations consist of reinforced concrete blocks, and rest on layers of metamorphic slate into which the foundations penetrate sufficiently deeply to reach sound rock. The project is completed with approach roads to the bridge and the intersections of the roads that converge on the bridge. Su objeto es mejorar la intersección de la CN-540 de Lugo a Orense, con la C-547. La solución estructural elegida responde a las necesidades de rapidez de ejecución y economía exigidas a esta obra. La superestructura del puente la forman seis pilas intermedias y dos estribos que soportan siete tramos rectos con largueros metálicos y losa de hormigón armado. El tramo situado sobre el cauce normal del río tiene una luz de 21 m, y los tramos restantes son todos ellos iguales y de 15 m de luz. El ancho total del tablero es de 9 m, de los que corresponden 7 a la calzada y 1 m a cada uno de los andenes laterales. Las pilas de hormigón armado son aporticadas con soportes circulares y dintel rectangular. La cimentación, a base de macizos de hormigón armado, se apoya sobre una capa de pizarras metamórficas en la que se ha profundizado hasta alcanzar la zona sana. Completan la obra los accesos al puente y las intersecciones de las carreteras que afluyen a él. |
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