Steel bridge installation, Buenos Aires, Argentina

Overview

ALE has successfully completed a steel bridge installation, weighing 155t, over Avenida General Paz and 25 de Mayo in Buenos Aires.

Services Required

ALE was tasked to mount a new steel bridge whilst avoiding any obstruction to the heavy vehicle flow on one of the most used highways in Buenos Aires – Avenida General Paz.

The bridge was prepared parallel to the highway, at the service road level. The assembly operation consisted of taking the bridge from its original position, turning it 90 degrees and carrying it to its final position, where it was descended over the brackets onto the final supports.

In order to do this, two gantry structures were designed with four 90t skid shoes as their main beams. The gantries were then assembled on two conventional trailers which were propelled by two prime movers and linked together using a beam for rigidity as they could work as a single unit. This is the first bridge installation by ALE’s Argentina branch to be installed in this way; where conventional trailers have been used instead of SPMTs, which highlights the high level of engineering involved.

The installation took 1.5 hours and the manoeuvre was performed in 11 hours, within the time limit and thus avoiding highway interruption.

 

 

Montaje de Puente metálico Gral. Paz y 25 de Mayo

Resumen

ALE completó con éxito el montaje del puente metálico ubicado sobre la avenida Gral. Paz a la altura de la calle 25 de Mayo.

 

 

Servicios Requeridos

El objetivo del proyecto fue instalar este nuevo puente evitando interferir con el constante tránsito de vehículos en la autopista más cargada de Buenos Aires. Por tal motivo se fabricó el puente paralelo a la Av. General Paz, elevado al nivel de colectora.

 

La operación de montaje del puente consistió en tomar el puente desde la posición inicial, rotarlo 90° y trasladarlo hasta la posición final para finalmente descenderlo sobre los estribos en los apoyos definitivos.

 

Para ello se diseñaron 2 estructuras tipo pórtico cuyas vigas principales contaban con un sistema de deslizamiento de cuatro skid shoes de 90t. Dichos pórticos fueron instalados sobre dos carros convencionales tipo, lo cuales eran propulsados por dos cabezas tractoras y estaban vinculados entre sí con el fin de actuar como un conjunto rígido.

 

La maniobra fue realizada cumpliendo el tiempo de corte de la autopista de 11hs.

ALE Heavylift, Smarter, Safer, Stronger, ale, ALE, abnormal load engineering, heavy crane lifting, heavy transportation

  • Steel bridge installation, Buenos Aires, Argentina

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