Strukturas MSS approved as safe construction method to build bridge over the railway

The Bane NOR – Norwegian National Rail Administration has approved Strukturas MSS – Movable Scaffolding System as a safe construction method to build the bus road bridge over the railway line in Stavanger.

Movable Scaffolding System - MSS
MSS over the railway

The joint venture of Risa AS and Contur AS, with COWI as adviser, won the competition to build the Bussveien through Jåttåvågen, between Vaulen and Gausel in Stavanger.

The implementation of Strukturas as overhead MSS allows the railway to remain open throughout most of the construction period.
There is thus no need for a separate safety culvert over the railway, and train traffic can run while the biggest part of the concrete works is in progress.
When a contractor has to cast concrete or launch the overhead MSS over the railway they have to do it while there is no train traffic.

But they can do this work either at night when there is no train traffic or in periods where Bane NOR has approved stoppages in train traffic over several days. 
But most of the time concrete workers can work inside of the Strukturas as overhead MSS with ongoing traffic below.

If we had built in the usual way with traditional formwork, we would have had to secure the railway with a safety culvert and take additional safety measures to safeguard train traffic and other traffic under the bridge while the work is in progress, says Per Ove Stokkeland, project manager in Rogaland fylkeskommune .

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Special services for one of our first customers!

Our client, Mota-Engil, currently the largest Portuguese construction company present in various markets worldwide, has awarded Strukturas the redesign project of an Overhead MSS originally not provided by us and which had been stored for several years in their yard in Poland.

General Overhead MSS view
Rear launching support view
Workshop rebuilt stage
External steel formwork trial assembling at the steel workshop

Strukturas’ redesign introduced significant modifications to the MSS, including a hinge joint between the main girder and the front nose, allowing it to be used on plan view curved decks, the addition of a rear concreting support, which allows for the transportation of pre-assembled U-shaped reinforcement using electrical winches, and the supply of a hydraulically operated internal formwork.

Front nose trial assembling at main yard
Front nose trial assembling at main yard
Hinge detail at main girder
View from the rear
Front nose general view

Mota-Engil transported the MSS from Poland to Portugal, where it is currently being used in the construction of railway viaducts. The rebuilt MSS steel structure was done in Portugal. Mota-Engil gave a special attention to pre-assembly and testing both at the workshop and at their central yard, due to the MSS being stored in Poland for several years.

Strukturas has been supplying various bridge building equipment, including Formtravellers FT and Movable Scaffolding Systems MSS, to Mota-Engil for around 30 years. Our the first supply was made in 1994 of an Underslung MSS to the company, that was then called Engil and later included in the Mota group, giving rise to the current Mota-Engil.

Hydraulic operated internal formwork delivered by Strukturas
External steel formwork
New rear concreting view
Front and intermediate supports

Krondorf Bridge demolition

The Strukturas rental Underslung MSS Randselva was dismantled autumn 2021 in Norway and sent directly to Germany for the demolition of the Krondorf Bridge on the A3 south of Nürnberg.

 

The northbound deck is being demolished as the traffic is running on the southbound deck. After domolished deck and new construction on the north bond deck, the Strukturas rental Underslung MSS will be used to demolish and build also the south bond deck.

Start MSS assembling

Deck demolition

MSS operation

World-leading bridge builders do also build factories

Herøya Industripark recently published an article about us:

Strukturas team moved from Langesund into the industrial environment at Herøya.

“We see a great drive in industry at Herøya. We want to be here because we can contribute, help build the new factories that are planned,” says Terje Johannessen, new head of industry and offshore at Strukturas.

Terje is back in Strukturas after five years in Bilfinger. Prior to that, he worked with steel structures in Strukturas for 22 years. Now he leads the company’s industrial venture after recently retired Paul Andersen.

Our team knowledge is in demand and it has turned into hundreds of giant steel and concrete bridges all over the world. Moreover we have also provided our services to Industry since 1991. Now we will also use the knowledge to help build factories. 

“I have recently been involved in building a factory,” comments Terje. “Under the auspices of Bilfinger, I was the engineering manager for NEL Hydrogen. They have now built the world’s largest factory for the production of electrodes here at Herøya.”

He mentions several industrial projects he has been involved in in recent years, such as REO (Rare Earth Objects), Hydro’s new aluminum factory at Karmøy, conversion of test facilities for Yara in the research park and the Bamboo project.

“I hope that my experience is useful for developing the industrial part,” says Terje. “The job will be to bring in industrial projects where we can contribute on steel and concrete. We can take part in all construction projects, and we are particularly strong in steel. I know many people here in the environment, and I am very pleased that we have moved to Herøya. Now we will further develop and focus on expanding the industrial department.”

FT Sibiu: casting deck segments in Romania

FT Sibiu Strukturas

In Talmaciu near the historic city of Sibiu two Strukturas FT pairs was delivered to Hünnebeck to concrete the central cantilever deck of a bridge integrated in the new highway under construction.

PORR România took one more engineering adventure, this time TEN-T Sibiu-Pitești Motorway in Romania.

Main activities:
🔸 Motorway with two lanes in each direction, hard surface width of 26m along the length of 13.170km
🔸Two road junctions: Sibiu and Boița
🔸Two service spaces of type S1 at km 8.200 left, km 8.200 right
🔸A maintenance and coordination centre in the area of the Boița road junction
🔸A viaduct with 10 spans at km 10.470, at a length of 414.70m
🔸A viaduct with 8 spans at km 12.375, at a length of 651.40m
🔸27 bridges and passages
🔸27 culverts

Two Strukturas as FT pairs was delivered to Hünnebeck by BrandSafway to concrete the central balanced cantilever deck of a bridge integrated in the new highway under construction.

Do you want to create something really great
Let’s talk about how Strukturas as can supply you bridge building technical solutions and equipment. 

The bellow two YouTube videos shows

  1. Huennebeck Project of the year 2021 video;
  2. and an interesting time-lapse of an early project stage.