Strukturas news

Overhead Form Traveller for the Nydal bridge

The Nydal bridge – Nydalsbrua

Roundabout transition to the cable-stayed bridge.

Overhead Form Traveller with segment length of 8,50m.

The Nydalsbrua is a 183-meter long cable-stayed bridge over the Nidelva in Trondheim, which has replaced the existing Sluppen bridge.

Nydalsbrua is the winner of Norwegian Betongtavlen 2023!

Well done Nydalsbrua project team!

Skanska is the bridge’s contractor, Aas-Jakobsen AS designer and Plan arkitekter AS have designed Nydalsbrua.

The Statens vegvesen – Norwegian Public Roads Administration was the client.

Photo credits to Grzegorz Gucwa from Skanska team.

To see more projects we have completed with form travellers SEE THIS LINK

If you have a project where you would like us to have a look and make a proposal, feel free to contact our local agent or our head office in Norway. CONTACTS

Span by span construction of the new TB Heubach bridge

Strukturas MSS Heubach new bridge construction

The Heubach valley bridge consists of two parallel structures, which were demolished and rebuilt in two construction phases.

Demolition of the old bridge and the construction of the new Heubach bridge was awarded by Die Autobahn GmbH des Bundes to the contractor Implenia.

Movable Scaffolding System ensures the minimal intervention to existing infrastructure.
Using MSS for new construction allows the existing highway and the road bellow to remain open throughout most of the construction period.

After finished demolition the same MSS is also used for the construction of the new TT section decks. As a result this approach saves time and resources, by making the construction process more efficient.

The MSS installation works was carried out by professional site team from Strukturas as.

Highlights & Facts:

Max Span: 48,0m
Max MSS Span: 39,1m
Weight of the concrete bridge: Approx 426 KN/m
Width Of Bridge Slab: 18.3m
Min. Hor. Radius: R= 2500m
Max Crossfall: 4.53%
Max Long Slope: 0,63%
Deflection of MSS: MAX L/400

The replacing of old bridge superstructures with MSS is an effective and safe technical solution.

Here is the link to the blog post about the demolition of the same bridge using the same MSS

See the video below and do not hesitate if you wish to consult about your bridge!

STRUKTURAS

WE MAKE IT SIMPLE!

First segments of balanced cantilever bridge are casted at Gostyn Bypass in Poland

We are thrilled to share that first segments of balanced cantilever bridge are casted at Gostyn Bypass in Poland.

On behalf of Strukturas project team leaded by Maciej Masłowski we are sending our congats to Gostyn Bypass MGP/PZDd-14 bridge reinforced concrete team leaded by Alicja Kosz-Koszewska from G&M Sp. z o.o.
The consortium of MIRBUD SA and KOBYLARNIA S.A. is the General Contractor.

Strukturas has a great partner Hünnebeck by BrandSafway Poland team, leaded by Daniel Hutnik.

It’s good to feel a strong support and see great performance in designing and supplying formwork for bridge foundations, piers and hammerheads.

Information about the Form Traveller delivered to this project:
Max. Segment Length: 5,00 meters
Max. Segment Width: 11.78 meters
Max. Segment Weight: 175 tons with 5.0 meters
Max. Longitudinal Slope: 0,7%
Max. Crossfall: 2,0%

Facts:
Assembly of FT is done by Strukturas site team
Hammerhead was asymmetrical with temporary supports on one side – asymmetric FT start
Concreting segments and launching FT is symmetrical on each pendulum
Strukturas is using Hunnebeck H20 wooden beams for external FT formwork.
Besides FT steel structure Strukturas is supplying the client with all wooden parts too

STRUKTURAS
WE MAKE IT SIMPLE!

If you would like to learn more about using form travellers for your bridge, send us an email la@strukturas.no and we will contact you as soon as possible!

Span by span demolition of the bridges using the MSS

Span by span demolition of the bridges using STRUKTURAS MSS – Movable Scaffolding System.

Contractors Eiffage , Implenia and Arlt Bauunternehmen GmbH are using this demolition method for their client Die Autobahn GmbH.

See the video about the project. For more videos about our projects, visit and subscribe to our Youtube channel STRUKTURAS YOUTUBE CHANNEL

The demolition of the old bridge with MSS is an effective and safe solution:

– Minimal intervention to existing infrastructure.

– Using MSS for demolition allows the existing highway to remain open throughout all of the demolishing period.

– Moreover MSS allows the existing railway to remain open throughout most of the demolishing period.

– The MSS could be assembled on the ground and later could be lifted with 4 strand jacks.

– After finished demolition MSS could be lowered with 4 strand jacks on the ground for safe and productive MSS dismantling.

– The challenging MSS installation conditions can be carried out by professional site crew from Strukturas.

– The engineering challenge is to avoid an overload of the superstructure during the demolition and to ensure a safe load transfer within the load capacity of the MSS.

– After the demolition this same MSS could also be used for the construction of the bridge deck. This approach saves time and resources, making the construction process more efficient.

If you would like to learn more about bridge demolition using Movable Scaffolding System, send us an email la@strukturas.no and we will contact you as soon as possible!

STRUKTURAS

WE MAKE IT SIMPLE!

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#Brücke #Vorschubrüstung #Rückbau

#Bridge #ConstructionMethods

#Concrete #Project #Innovation

#Engineering #Technology

#Sustainability #Productivity

The story of legendary MSS Drammensvogna

The story of legendary MSS Drammensvogna – 50 years in action

Last week we signed one more MSS redesign contract with Skanska, who owns legendary MSS Drammensvogna.

This time it shall be used at bridge Vadløkkjbrua on the E6 south of Trondheim, Norway.

Vadløkkjbrua will be the 19th project made with this MSS!

MSS Drammensvogna, one of the first MSS was builded in 1973 for Norway the motorway bridge in Drammen, Norway.

The E18 motorway bridge in Drammen is a four-lane girder bridge on the E-18 that crosses the outlet of the Drammen river between Brakerøya and Bangeløkka. The bridge has free spans of up to 60 meters and a sailing height of up to 12 metres.

Until now it is the longest bridge in Norway – 1,890 meters!

Revolutionary MSS technology has proven its productivity.

The contractor for the bridge was Ingeniør Thor Furuholmen A/S, one of the largest companies in Norway at the time. They later merged with Ing. F. Selmer A/S to Selmer – Furuholmen AS, which today is Skanska Norge AS.

In collaboration with the consulting company Taugbøl & Øverland A/S (now COWI), the MSS was designed and put into production.

Construction work began in the autumn of 1973. The span by span casting of the bridge deck was carried out with a newly developed type of MSS, 131 meters long (800 tonnes weight), which enabled full casting at a speed of up to 100 meters of bridge per 14 days. Bridge deck has been casted 4 weeks before end of construction schedule.

Since that time the MSS Drammensvogna has been redesigned for many bridge projects in Nordic countries as underslung and overhead MSS.

On the engineering side, competence on the equipment has been maintained internally at Skanska, and there has also been good cooperation with for the consulting with us – company Strukturas as.

All the projects accomplished with the Drammensvogna MSS:

1. E18 Drammen Drammensbrua 1973-75

2. E39 Kristiansand Gartnerløkka bridge 1978

3. Stockholm Johanneshov Bridge 1981-83

4. Strømstad Skee bridge 1986

5. E6 Oslo Lodalen bridges 1986-87

6. Sweden Obbola bridge 1988-89

7. Molde Bolsøy Bridge 1990

8. Skien Menstad bridge 1990-91

9. Askøy Askøy Bridge 1990

10. Storeklubben, Askøy Storeklubben viaduct 1989

11. Troms Dyrøy Bridge 1994

12. Porsgrunn Frednesbrua 1994-95

13. Gardermobanen Mork/Nessa/Kvisldalen 1995-96

14. Sykkylkven Sykkylvsbrua 1999-2000

15. E18 Drammen Parallel motorway bridge 2003-2004

16. E16 Bagn Bagn bridge 2017

17. Nordøyvegen Lauke and Hamnaskjersund bridge 2020-21

18. E16 Bjørum-Skaret Isielva bridges 2022-24

19. Vadløkkjbrua on the E6 south of Trondheim 2024-25

Founder of Strukturas Tore Gjølme has followed this MSS since the beginning and will participate also at the 19th project for Drammensvogna.

He is 78 years old and still going strong!

Credits to Statens vegvesen – Norwegian Public Roads Administration

Link to article

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Underslung Form Traveller Ariari Puerto Lleras, Meta, Colombia

Underslung Form Traveller Ariari – Puerto Lleras, Meta, Colombia

Connecting the downtown area of Puerto Lleras with the existing Vista Hermosa county road, known as “Trocha Siete” with a bridge over the Ariari River.
It is a cable-stayed bridge with a length of 270 m, made up of spans of 70 m, 135 m and 70 m and a deck width of 11.6 m. Bridge supported by two pylons approximately 52 m high and 20 m wide at the base.
The superstructure is made up of a concrete slab that is supported on longitudinal and transverse by structural steel beams.
Balanced cantilever construction method of the deck – Cast-In-Situ with Form Travellers.

The Underslung Form Traveller solution can be adapted to different types of bridge decks, such as arch bridges and cable-stayed bridges, leaving enough room to assemble the temporary or final cable stays, and allowing easy launchback to the initial assembly position.
The external formwork of this type of Form Traveller is supported by the main structure, leaving enough room to install the pre-assembled rebar cage. When the rebar cage is pre-assembled, the Strukturas Underslung Form Traveller is the perfect choice.

Highlighs & Facts:

Segment Length: 7,75m
Length of Hammerhead: 19,9m
MAX Segment Weight: 132,7ton
MAX Width Superstructure: 12,8m
Min.Hor.Radius: R=1195m
Max Long Slope: 7,0%
Crossfall: 0%
Deflection of Main Beam: L/400
Critical Wind Speed During Launching: 20,0 m/sec
Critical Wind Speed During Concreting: 32,0 m/sec
Client: CONCREARMADO LTDA.
Project Location: Puerto Lleras, Meta, Colombia

STRUKTURAS
WE MAKE IT SIMPLE !

See the video below and do not hesitate if you wish to consult about your bridge!

TB Heubach Bridge demolition

Implenia, a leading construction services company, decided to use an Strukturas Movable Scaffolding System (MSS) Underslung for the demolition of existing concrete decks on the TB Heubach Bridge in Germany.

Moreover this same MSS is also used for the construction of the bridge’s new TT section decks.

The Heubach valley bridge consists of two parallel structures, which will be demolished and rebuilt in two construction phases.
Bridge info:
Year of construction of existing building: 1968
Length: 184 meters
Width: 16.5+16.5 meters
Bridge spans: 30,6 + 37,5 + 45 + 37,5 + 30,6 meters
Max. height above ground: 18 meters

Demolition of the old bridge and the construction of the new Heubach bridge was awarded by Die Autobahn GmbH des Bundes.

MSS at assembling final stage

Deck demolition

The Strukturas MSS solution is particularly innovative because it allows the conversion of the MSS formwork from a box section, which is used during the demolition phase, to a TT section, which is used during the construction of the new bridge decks. This approach saves time and resources, making the construction process more efficient.

The challenging conditions on the job site made the assembly of the MSS particularly demanding, and the Strukturas MSS assembly team had to plan and execute the operation to the best of their ability.

Movable Scaffolding System ensures the minimal intervention to existing infrastructure.
Using MSS for demolition allows the existing highway and the road bellow to remain open throughout most of the demolishing period.
The engineering challenge – to avoid an overload of the superstructure during the demolition and to ensure a safe load transfer within the load capacity of the MSS.

MSS general cross section view when used to demolish the existing concrete decks.

Highlights & Facts:
Max Span: 45,0m
Max MSS Span: 45,0m
Weight of the concrete bridge: Approx 250 KN/m
Width Of Bridge Slab: 16.5m
Min. Hor. Radius: R= 2500m
Max Crossfall: 2.1%
Max Long Slope: 0,63%
Deflection of MSS: MAX L/400

The demolition of old bridge structures with MSS is an effective and safe solution for many bridges.

See the video below and do not hesitate if you wish to consult about your bridge!

STRUKTURAS

WE MAKE IT SIMPLE!

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.

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.

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.

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.

Strukturas Overhead MSS for Bridge SO 203

Early 2021 the Strukturas Overhead MSS named SO 203 was ready to cast the first span at the first long deck of the bridge project D3 in the Czech Republic, close to Ceske Budejovice.

Overhead Form Traveller for the Nydal bridge

Span by span construction of the new TB Heubach bridge

First segments of balanced cantilever bridge are casted at Gostyn Bypass in Poland

Span by span demolition of the bridges using the MSS

The story of legendary MSS Drammensvogna

Underslung Form Traveller Ariari Puerto Lleras, Meta, Colombia

TB Heubach Bridge demolition

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

Special services for one of our first customers!

Strukturas Overhead MSS for Bridge SO 203

Strukturas - we make it simple !

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