Stockholmsporten master plan by BIG

BIG (Bjarke Ingels Group) + Grontmij + Spacescape are the winning team for the Stockholmsporten master plan competition to design an inviting new entrance portal into Stockholm at the intersection of a newly planned super-junction.

Urban planning: Stockholmsporten master plan

The traffic junction ‘Hjulsta’ is being planned in the north of Stockholm, where the two highways E18 and E4 Stockholm Bypass meets in a three level intersection. The roads create physical and visual barriers between the surrounding neighbourhoods and divide the area into four parts.

Urban planning: Stockholmsporten master plan

The Stockholm Sphere connects the four parts with a landscape loop. A continuous circular bike and pedestrian path aligned with public buildings and functions reconnects the different areas in an un-hierarchical and democratic way.

Urban planning: Stockholmsporten master plan

The central valley is turned into a pie chart park with nature of different character. The division of the park creates a diverse experience when moving in or around it.

New facades and buildings are integrated in the current building structure in Hjulsta. Focus is on adding small and large apartments to the existing midsize range. Both J?rvaby and Barkaby expand towards the landscape loop.

Urban planning: Stockholmsporten master plan

What is a gate, but a significant point you pass? Here that point is turned into a reflective, hovering sphere mirroring Stockholm as it is, new as well as old areas. An always updated, constantly changing icon is created. Photovoltaic film covers the 30% of the surface that faces the sun, producing enough energy to keep the sphere floating and supply 235 houses with electricity.

Urban planning: Stockholmsporten master planUrban planning: Stockholmsporten master planUrban planning: Stockholmsporten master planUrban planning: Stockholmsporten master planUrban planning: Stockholmsporten master planUrban planning: Stockholmsporten master plan

 

Concept diagrams:


Stockholm on the world map

Urban planning: Stockholmsporten master plan

Marketing itself and being a part of peoples’ conscious is an important part of the City of Stockholm’s ambitions. The aim of Stockholm is to become the capital of Scandinavia. What then can be done in order to generate the attention needed to leave a significant mark on the world map?

 

Desired connections

Urban planning: Stockholmsporten master plan

J?rva Friomr?de should be made accessible for the inhabitants of J?rvaby and Hjulsta as well as Barkaby. The three neighbourhoods would also benefit from improved interconnectivity. In addition, a green connection between Sp?ngadalen and the vast J?rva Friomr?de is missing.

 

Infrastructural barrier

Urban planning: Stockholmsporten master plan

Resulting from construction of the traffic junction ‘Hjulsta’, where two European highways intersect, the area is distinctly cut into four pieces.

 

The Green Loop

Urban planning: Stockholmsporten master plan

Introducing a loop links the five points defining the path without internal hierarchy. The two park areas are extended into the loop and thereby woven together.

 

Key points with public buildings

Urban planning: Stockholmsporten master plan

The intersection points between the existing areas and the proposed loop allow new public buildings to be introduced: a sports centre, a winter garden, a hamam bath, a ‘naturum’ and a mosque.

 

Urban development

Urban planning: Stockholmsporten master plan

The buildings along these streets are infiltrated and extended until the edge of the loop.

 

The central landscape

Urban planning: Stockholmsporten master plan

In the area surrounding the intersection an artificial landscape is introduced. Through a pie chart divisions every walk along the loop becomes a diverse and exiting experience.

 

Excavation soil

Urban planning: Stockholmsporten master plan

The excavation mass is transported uninterrupted from the tunnel construction of ‘E4 Stockholm Bypass’ to the new valley surrounding traffic junction ‘Hjulsta’.

 

Noise

Urban planning: Stockholmsporten master plan

High noise levels are a consequence of the heavy traffic on both highways.

 

The valley

Urban planning: Stockholmsporten master plan

The creation of a valley surrounding the intersection separates it from the neighbourhoods, giving them more protection from the impact of the highways.

 

How do you create a landmark when all you can see is the sky?

Urban planning: Stockholmsporten master plan

 

The surrounding as a landmark

Urban planning: Stockholmsporten master plan

The reflective sphere turns the surrounding itself into a landmark and lets the driver experience the neighbourhoods through a reflective image on the sphere.

 

Wind power

Urban planning: Stockholmsporten master plan

As the technology of harvesting wave energy further develops, the wind will also be a possible source of energy production in the sphere. In a similar way as wave energy is generated from the alternation between compression and tension these forces are an outcome when the wind meets the sphere.

 

Solar energy

Urban planning: Stockholmsporten master plan

The photovoltaic cells on the surface of the sphere produce energy to light the new streets and supply the new developments with electricity.

 

Photovoltaic cells

Urban planning: Stockholmsporten master plan

Photovoltaic film covers the surface of the sphere most exposed to sunlight. The area is estimated to be 30% of the full surface of the sphere, equating to 9425 sqm.

 

Annual energy production

Urban planning: Stockholmsporten master plan

The heating of the air, which keeps the sphere floating, is estimated to consume 10% of the energy produced in the sphere. The remaining energy will supply 235 houses with electricity.

 

Surface material

Urban planning: Stockholmsporten master plan

The sprayed of reflected surface and the photovoltaic cells protects the PVC-film from UV-radiation. The lifespan is prolonged to 12 years or more.

 

Energy distribution

Urban planning: Stockholmsporten master plan

All transportation of energy to and from the sphere is conducted through structural truss.

 

Foundation

Urban planning: Stockholmsporten master plan

Three cables and one structural truss anchor the sphere to the ground. If needed an internal lightweight structure can be introduced to better withstand deformation.

 

Safety

Urban planning: Stockholmsporten master plan

The construction guarantees that the material of the sphere, in case of an emergency, does not reach the highways.

 

Project info:

Location: Stockholm, Sweden

Architect: BIG (Bjarke Ingels Group)

Collaborators: Grontmij, Spacescape

Partner in Charge: Bjarke Ingels, Jakob Lange

Project Leader: Hanna Johansson

BIG Team: Camille Crepin, Barbora Srpkova, Alessio Valmori, Xiao Xuan Lu, Krista Meskanen, Long Zuo

Grontmij Team: Veronika Borg, Albin Ahlquist, Anders Falk , Mats Mauritzson, Nils-G?ran Nilsson, Christer Johansson, Bengt Ridell

Spacescape Team: Alexander St?hle, Tobias Nordstr?m

Client: City of Stockholm, Swedish Transport Administration

Size: 580.000 sqm

 

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