Array ( [0] => WP_Term Object ( [term_id] => 4 [name] => Civil [slug] => civil [term_group] => 0 [term_taxonomy_id] => 6 [taxonomy] => sectors [description] => [parent] => 0 [count] => 91 [filter] => raw )[1] => WP_Term Object ( [term_id] => 96 [name] => Europe [slug] => europe [term_group] => 0 [term_taxonomy_id] => 98 [taxonomy] => location [description] => [parent] => 0 [count] => 196 [filter] => raw )[2] => WP_Term Object ( [term_id] => 40 [name] => Jacking [slug] => jacking [term_group] => 0 [term_taxonomy_id] => 42 [taxonomy] => services [description] => [parent] => 0 [count] => 92 [filter] => raw )[3] => WP_Term Object ( [term_id] => 62 [name] => Jacking Systems [slug] => jacking-systems [term_group] => 0 [term_taxonomy_id] => 64 [taxonomy] => equipment [description] => [parent] => 0 [count] => 78 [filter] => raw )[4] => WP_Term Object ( [term_id] => 38 [name] => Lifting Systems [slug] => lifting-systems [term_group] => 0 [term_taxonomy_id] => 40 [taxonomy] => services [description] => [parent] => 0 [count] => 51 [filter] => raw )[5] => WP_Term Object ( [term_id] => 60 [name] => Lifting Systems [slug] => lifting-systems [term_group] => 0 [term_taxonomy_id] => 62 [taxonomy] => equipment [description] => [parent] => 0 [count] => 60 [filter] => raw )[6] => WP_Term Object ( [term_id] => 34 [name] => Marine Engineering [slug] => marine-engineering [term_group] => 0 [term_taxonomy_id] => 36 [taxonomy] => services [description] => [parent] => 0 [count] => 18 [filter] => raw )[7] => WP_Term Object ( [term_id] => 118 [name] => Mooring and Winches [slug] => mooring-and-winches [term_group] => 0 [term_taxonomy_id] => 120 [taxonomy] => services [description] => [parent] => 0 [count] => 8 [filter] => raw )[8] => WP_Term Object ( [term_id] => 120 [name] => Mooring and winches [slug] => mooring-and-winches [term_group] => 0 [term_taxonomy_id] => 122 [taxonomy] => equipment [description] => [parent] => 0 [count] => 8 [filter] => raw ))

KEY BENEFITS:

Improved traffic flow

Challenging topography overcome

 

 

PROJECT:

Within central Spain, the N-403 highway stretches for 178km from Adanero in the north to Toledo in the south. At the northern end, close to Ávila, it passes over the Burguillo reservoir. A new, wider bridge installation was needed, to improve mobility and road safety in the province.

The new bridge installation’s central span, measuring 42m long and up to 5.6m wide, needed to be positioned between the two sides of the reservoir. A land transportation would have been impossible and there was not enough space at the site to lift the span, weighing 400t, over the reservoir using heavylift cranes. ALE devised a bespoke solution using its specialist civil lifting technology, offering the safest and swiftest solution.

A floatover operation had been executed the day before the lifting operation was due to take place. It was moored in a safe position and the following day ALE positioned it ready for the lift. Winches were installed on both sides of the reservoir and connected via cables to each corner of the span, which was then winched into position.

For the lift, anchors were connected to hoisting units and a cantilever structure was installed on each end of the span, with two strand jack lifting units on each structure. These raised the span by 20m, and it was then connected to the rest of the bridge structure.

ALE’s bridge installation required four 10t capacity winches with cables, four anchors and hoisting units, two cantilever structures and four 70t capacity strand jack lifting units.

The new La Gaznata Viaduct replaces the old bridge, which dated from 1920 and had been narrower. It will provide improved road connections in the area and is part of a larger ongoing project to upgrade the N-403 to become part of the Autovia A-40 motorway.

Download PDF

Instalación de viaducto mejora infraestructura sobre embalse en España

 

BENEFICIOS CLAVE:

Flujo de tráfico mejorado

Difícil topografía superada

 

PROYECTO:

La carretera N-403 se extiende 178km por el centro de España, desde Adanero en el norte hasta Toledo en el sur. En el extremo norte, cerca de Ávila, pasa sobre el embalse de Burguillo donde era necesario la instalación de un puente más amplio para mejorar la movilidad y la seguridad vial en la provincia.

El tablero del vano central del nuevo viaducto, con un peso de 400t, debía conectarse a los dos lados de la estructura. Para ello, un transporte terrestre era inviable y la maniobra mediante grúas no era posible debido al poco espacio existente para el posicionamiento de estas en el tablero, de 42m de largo y 5,6m de ancho. Por lo cual, ALE ideó una solución personalizada utilizando su tecnología especializada en izados en el sector civil, ofreciendo la solución más segura y rápida.

En un primer momento se realizó la navegación del tablero desde su posición de flotadura hasta su posición de izado. Para la maniobra se utilizaron 4 winches de 10t de capacidad, situando una pareja en cada margen del embalse y conectando cada cable a cada una de las esquinas del tablero.

Para el izado se instalaron dos estructuras de izado en voladizo, una en cada lado del tablero, con dos unidades de izado en cada estructura. El tablero fue izado 20m, conectándose después al resto de la estructura del puente.

La instalación del viaducto realizada por ALE requirió cuatro winches de 10t de capacidad, cuatro unidades de izado, dos estructuras de izado en voladizo y cuatro strand jacks de 70t de capacidad.

El nuevo viaducto de La Gaznata sustituye al antiguo puente, que data de 1920 y que era más estrecho. Proporcionará mejores conexiones por carretera en la zona y forma parte de un proyecto más amplio en curso para mejorar la N-403 y que pase a formar parte de la autovía A-40.

Descargar PDF

Explore our projects

Civil

Bridge Installation and Removal

Jacking

Lifting Systems

Mooring and Offshore Winches

Marine Engineering

Europe