News: Macalloy secure Troja Bridge contract
Rotherham construction experts, Macalloy, will provide their innovative systems to the Troja Bridge project in the Czech Republic, the world's first long span network arch bridge.
Based in Dinnington, Macalloy are world leaders in design, manufacture and supply of threaded bar and cable systems to engineering and construction projects across the globe.
The £29m Troja Bridge will span the River Vltava using the innovative network arch method that is dramatically stronger than more traditional bridge designs.
Conventional bowstring arch designs use vertical hangers to stiffen the structure but on the Troja Bridge the hangers are arranged diagonally, creating a criss-cross "network".
The design has been pioneered by engineering group, Mott MacDonald, and means that 40% less materials are needed. Without the cable network, the crown of the arch would have to stand more than 50m above the deck. With the network, that height reduces to 20m.
Peter Hoy, managing director of Macalloy, said: "Throughout Europe we see a lot of the bowstring bridge designs and are able to supply the finished suspension bars ready for installation and tensioning on the bridges in question.
"This is a first for the network arch design. Efficiencies in this method of configuration of the arch and the way the bridge works are driving further efficiencies in the construction process."
The 200 metre bridge is currently under construction and is a key crossing for the important Prague ring road. It will carry a four lane dual carriageway and twin tram tracks along with pedestrian and cycle paths. It has a welded steel box section arch and post-tensioned, reinforced concrete tie beams.
Ovako has won the contract to supply Macalloy with structural steel. Peter Hoy, added: "We have been working on securing this order for some time. Liaising closely with Ovako on the technical specification, material grade, size requirements and scheduling of deliveries, all of which are critical to the success of such a project."
Supply of the material has commenced from Ovako's plant in Sweden to Macalloy in Rotherham where the bars, which range from two metres to 12 metres depending on their location on the structure, are trued, an exact thread is applied over the diameter and a protective finish is added. They are then shipped to Macalloy's distributor, Tension Systems in the Czech republic, who are carrying out the installation.
Macalloy website
Images: Mott MacDonald
Based in Dinnington, Macalloy are world leaders in design, manufacture and supply of threaded bar and cable systems to engineering and construction projects across the globe.
The £29m Troja Bridge will span the River Vltava using the innovative network arch method that is dramatically stronger than more traditional bridge designs.
Conventional bowstring arch designs use vertical hangers to stiffen the structure but on the Troja Bridge the hangers are arranged diagonally, creating a criss-cross "network".
The design has been pioneered by engineering group, Mott MacDonald, and means that 40% less materials are needed. Without the cable network, the crown of the arch would have to stand more than 50m above the deck. With the network, that height reduces to 20m.
Peter Hoy, managing director of Macalloy, said: "Throughout Europe we see a lot of the bowstring bridge designs and are able to supply the finished suspension bars ready for installation and tensioning on the bridges in question.
"This is a first for the network arch design. Efficiencies in this method of configuration of the arch and the way the bridge works are driving further efficiencies in the construction process."
The 200 metre bridge is currently under construction and is a key crossing for the important Prague ring road. It will carry a four lane dual carriageway and twin tram tracks along with pedestrian and cycle paths. It has a welded steel box section arch and post-tensioned, reinforced concrete tie beams.
Ovako has won the contract to supply Macalloy with structural steel. Peter Hoy, added: "We have been working on securing this order for some time. Liaising closely with Ovako on the technical specification, material grade, size requirements and scheduling of deliveries, all of which are critical to the success of such a project."
Supply of the material has commenced from Ovako's plant in Sweden to Macalloy in Rotherham where the bars, which range from two metres to 12 metres depending on their location on the structure, are trued, an exact thread is applied over the diameter and a protective finish is added. They are then shipped to Macalloy's distributor, Tension Systems in the Czech republic, who are carrying out the installation.
Macalloy website
Images: Mott MacDonald
0 comments:
Post a Comment