© Robert Andersson

罗伯特·安德森

作为斯德哥尔摩北环线发展的一部分，

As part of the development of the Northern Link in Stockholm, &Rundquist has designed two ventilation towers, located in different areas within the National City Park in Stockholm, one at Frescati and another in Värtan. Their function is to ventilate the air from Northern Link’s traffic tunnel and to reduce the emission levels at its entrances. Being placed within the National City Park, the towers’ design in relation to the park environment is very important.

 © Robert Andersson

罗伯特·安德森

概念、材料与几何

Concept, Material and Geometry

这些塔是用木头建造的，目的是为了与公园环境相联系，同时挑战通常如何设计技术功能的先入为主的观念。使用一种天然的和现场适应的材料，如木材，而不仅仅是作为一种包层材料，有很大的象征价值的北环线项目。

The towers are made in wood in order to relate to the park environment while challenging preconceptions about how technological functions are usually designed. The idea of using a natural and site adapted material like wood throughout, and not just as a cladding material, has great symbolic value for the Northern Link project.

 © Kasper Dudzik

c.Kasper Dudzik

塔楼经过优化后与建筑形式相互作用。木材作为一种天然材料，代表着低技术和高科技，从设计到制造和施工都嵌入了尖端木材工程。这座建筑高20米，呈超三角形，沿轴线向上旋转。内部几何和结构有助于优化排气气流；弯道处较大的空间进入塔顶，三角形截面较宽的塔顶空间越大，出口处的空气阻力就越小。

The towers have been optimized to function in interplay with the architectural form. Wood as a natural material represents both low tech and high-tech, embedding cutting edge timber engineering from design to fabrication and construction. The construction is 20 m high and is shaped as a super-triangle that pivots upwards, along its axis. The internal geometry and structure helps optimizing the exhaust air flow; the larger space at the bend into the tower and at the top, where the triangle sections are wider, reduces the air resistance at the exit.

扭转给塔一个圆滑和有趣的表达，暗示空气运动的形状。塔楼覆盖水平雪松片，遵循旋转的形状，突出雕塑的印象，并创造了一个变化的图像随着时间和视角的变化。

The twist gives the towers a sleek and interesting expression, suggesting the shape of the air movement. The towers are clad with horizontal cedar sheets which follow the swiveling shape, accentuate the sculptural impression and create a varied image that change over time and with the viewing angle.

 © Kasper Dudzik

c.Kasper Dudzik

生产建设

Production and Construction

这些塔是参数化的三维建模，以便在整个设计过程中进行优化和调整。

The towers were parametrically 3d modelled to allow optimization and adjustments throughout the design process.

 Production Process

不同的构造部件已经从模型中被挑选出来，在一个自动化的过程中被标记为工件并被分类，然后文件被输出到加工出交叉叠层云杉面板的数控机床上。然后，这些元素被现场交付，并被组合成相互叠在一起的超级三角形，并由装有弹簧的垂直拉杆拉在一起，以避免木材移动时结构的撕裂。

The different constructive components have been picked out from the model, labeled and sorted out as workpieces in an automated process before the files were exported to the CNC machine that milled the parts out of cross laminated spruce panels. The elements have then been delivered on site and combined into super triangles stacked on each other and tensioned together by vertical tie rods of steel that were fitted with springs to avoid tear of the structure when the wood moves.

 © Kasper Dudzik

c.Kasper Dudzik

Function & Geometry

水塔的功能是将北环线行车隧道内受污染的空气引开，以减低隧道入口的废气排放水平。地下管道将每个隧道与相应的塔连接起来。该通道的风扇被设计成通过通风塔产生特定的气流，因为隧道入口的排放将足够低。塔内的几何形状和结构影响着出风量的阻力，从而影响到气流的流动。对塔楼进行了优化，使其功能与建筑形式相协调。

The towers’ function is to divert the polluted air inside the Northern Link traffic tunnels to reduce emission levels at the tunnel entrances. An underground duct connects each tunnel with the corresponding tower. Fans of the channel have been designed to create a specific airflow through the ventilation towers for emissions at tunnel portals will be sufficiently low. The tower's interior geometry and structure affect the resistance for the outflowing air and thus the air flow. The towers have been optimized to function in harmony with the architectural form.

 Exploded Axonometric

爆炸轴测

Architects Rundquist Arkitekter

Location Stockholm, Sweden

Category Other Structures

Area 45.0 m2

Project Year 2015

Photographs Kasper Dudzik, Robert Andersson

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