非常感谢 Barthélémy Griño Architectes 予gooood分享以下内容。更多关于他们：Barthélémy Griño Architectes on gooood
Appreciation towards Barthélémy Griño Architectes for providing the following description:

这栋雷达站作为Saclay地区最早一批大型科学设施，坐落在巴黎综合理工大学的校园中。超过六十米高的这栋塔为巴黎奥利机场进行可靠的航空管制。这栋远高于树木之上的雷达塔已经成为称为新区域发展的标志与象征。

Sited on the campus of the Ecole Polytechnique, the radar tower is one of the first project for the large-scale science cluster on Saclay plateau. Over 60m high, the tower provides a reliable air traffic control on the approach to Paris Orly Airport. Rising above trees, the tower is a landmark indicating and orientating this new area of development.

直径为13.8米的圆柱形塔身容纳着所有需要的技术设备。唯一突起的部分就是顶部的雷达天线罩。材料的选择上，浅灰色的高品质预制混凝土也愈加凸显出形式的简洁。雷达塔以天空作为背景，光线则透过多孔的结构照耀其中。

It is a 13.8 m diameter cylindrical trunk, housing all the required technical equipment. The only protrusion is the radome at the top. This simplicity of form is reinforced by the choice of only one material, light grey, high quality prefabricated concrete. The tower will be seen against the sky: in order that light may shine through it, the structural wall is perforated.

▽ 光线透过多孔的结构，light shine through the perforated structure

28根立柱有规律地排布在每一层，梯形的立柱内侧有着不一样的宽度和面积。高度为4.84米的立柱在顶部与底部被固定成环状，总共有12层叠加在一起。每一层半交错的偏移旋转打破了立面的连续性。多孔的塔身、交错排布的立柱以及不同的立柱内面积，使得建筑在不断变化的灯光呈现出千姿百态。

Each level is made of 28 concrete posts, arranged regularly. These posts are trapezoidal, with important variations in width on their back face. High of 4.84m, they are set into annular beams at their head and base, forming 12 superimposed sections. Each section is offset by a half-grid rotation, breaking vertical continuity. The porosity of the trunk, the alternately arranged posts, their multiple faces, go to form a sort of kaleidoscope beneath the changing light.

▽ 平面，plans

内部体量除了楼梯井与电梯间的轻钢结构，都与空气有着直接的接触。尽管建筑的形式十分简洁，但是结构功能却非常复杂，尤其是风力方面，风洞测试对于多孔的塔身来说十分必要。空腹桁架体系则将立柱嵌入横梁之中以保证雷达塔的稳定性。

The internal volume is open to the air, interrupted only by the lightweight steel structure of the stairwell and lift shaft. Behind its formal simplicity, this construction boasts a complex structural functionality, particularly in the face of wind. The porosity of the trunk meant that wind tunnel testing was necessary. The tower’s stability is obtained using the principles of a Vierendeel truss system with posts embedded into beams.

▽ 立柱嵌入横梁之中以保证雷达塔的稳定性，posts embedded into beams in order to obtain the tower’s stability

需要进行666次重复的安装在技术上面临着一个真正的挑战，建造中包括同一高度的稳定性、精度调整、装载、以及每层的密度和几何变形等诸多难点；而这一切的关键都在于采用特殊的混凝土连接结构。

This assembly repeated 666 times constitutes a real technical challenge because of the multiple difficulties that it imposes: securing the parts together at altitude, precision adjustment, substantial and complex loading, the density and geometric variation of the sections. This key point was solved with the use of specific concrete connections (Peikko system).

▽ 施工过程，under construction

▽ 特殊的混凝土横梁安装，specific concrete beam assembly

▽ 细部，detail drawing

Client – Direction des Services de la Navigation Aérienne, Paris
Architects – Barthélémy Griño Architectes Sas, Paris
Structural engineering – T/E/S/S, Paris
Mechanical engineering – MTC, La-Varenne-Saint-Hilaire
Lighting consultant – 8’18’’, Paris
General contractor – Rabot Dutilleul Construction, Paris
Prefabricated concrete contractor – Techni Prefa, Sainte-Radegonde

Drawings: Barthélémy Griño Architectes
English Text: Barthélémy Griño Architectes
Chinese Text: gooood

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