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frenak+jullien, Cardin Julien和m+mathieu holdrinet公司信心满满地公布了他们为全新的科学花园天文馆（Planétarium du Jardin des sciences）所做的工作，该场馆位于斯特拉斯堡大学内一片新设计的花园。该花园位于维克多尔大道沿线，优越的地理位置使其成为城市的一座灯塔。
▼建筑概览，Overview of the buildings ©Maxime Delvaux
frenak+jullien, Cardin Julien, and m+mathieu holdrinet proudly introduce their work on the new Planétarium du Jardin des sciences, which has opened its doors in a redesigned garden located at the heart of the Université de Strasbourg. Located along Avenue de la Victoire, its strategic position makes it a beacon in the city.
▼场地鸟瞰，Aerial view of the site ©Maxime Delvaux
为了描绘天空、想象宇宙、探讨天文学：该项目梦幻般的维度激发了由frenak+jullien（法国）领导的建筑团队、副建筑师 Cardin Julien（加拿大）和项目建筑师 m+mathieu holdrinet（法国）的灵感，有助于塑造建筑独特的形式。
To picture the sky, imagine the cosmos, talk about astronomy: the program’s dreamlike dimension inspired the architectural team led by frenak+jullien (France), with Cardin Julien (Canada), associate architects, and m+mathieu holdrinet (France), project architect, helping to create the building’s singular form.
▼建筑入口，Entrance ©Maxime Delvaux
由天空过渡到地面
A connection to the sky and the earth
位于气势恢宏的动物学和地质学机构中间，该天文馆由两座较深色调的体量组成，从花园丰富的绿化环境中脱颖而出：一座拦腰截断的圆锥形建筑内设有可容纳138人的投影厅与入口展廊；圆柱形的体量内设有科学花园大厅与相关服务设施。被切割的圆锥体朝向天空的姿态，展现出对于宇宙知识的无尽追求，而开放的、光芒四射的大厅指向科学院管理的众多地点。科学园致力于在大学内传播科学文化，拥有很好的知名度。
▼轴测图，Axonometric © frenak+jullien，Cardin Julien，m+mathieu holdrinet
Situated between the imposing Zoology and Geology institutes, the planetarium is made up of two dark volumes that stand out against the garden’s abundant greenery: a truncated cone to house the 138-seat projection room and its entrance gallery; a cylindrical volume to accommodate the lobby of the Jardin des sciences and related services. Reaching for the sky, the truncated cone suggests a timeless quest for knowledge of the universe, while the open and radiant lobby points towards the many sites managed by the Jardin des sciences. Dedicated to the dissemination of scientific culture within the university, the Jardin des Sciences thus gains new visibility.
▼入口特写，Close-up of the entrance ©Maxime Delvaux
精密如仪器
Machine-building
该结构不寻常的几何造型让人联想其该场地内19世纪建造的机器般的建筑，如天文观测台的穹顶，又让人联想到天文测量仪器，如星盘。对于路人来说，圆锥体的金属圆盘会随着天空色彩的变化而变化；对于可以俯瞰这里的本地居民来说，天文馆的第五立面仿佛一座花园中的天文仪器。
The structure’s unusual geometry is reminiscent of the 19th-century machine-buildings found on the site, such as the observatory’s dome and pavillons des mires, and evokes astronomical measuring instruments such as the astrolabe. For passersby, the cone’s metal disc beckons and reacts to the changing colours of the sky; for local residents overlooking the site, the planetarium’s fifth façade evokes an astronomical instrument set in a garden.
▼圆锥体量，Cone volume ©Maxime Delvaux
丰富二元性
A fruitful duality
天文馆和接待区两个元素由相似的体量构成，但组合方式却截然不同。天文馆向内，周边空旷（通往礼堂的走廊），中心饱满（礼堂区域），而接待区向外，朝花园开放，中央（大厅）空旷，周围伴随一圈建筑。天文馆与接待区，一个明亮如日晷般透过玻璃屋顶朝天空开放，而另一个朝向黑暗，营造出宇宙剧场般的人造天空。
The two elements, the planetarium and the reception area, consist of shared components, but are put together in opposite ways. Turned inward, the planetarium is empty around the perimeter (the access corridor to the auditorium) and full at its centre (the auditorium), while the reception area, which opens outward to the garden, is empty at its centre (the hall) and is surrounded by a ring of buildings. One is bright and opens onto the sky through a glass roof shaped like a sundial, while the other is plunged into darkness, to create the artificial sky of the cosmic theatre.
▼体量特写，Close-up of the volumes ©Maxime Delvaux
引导性与沉浸式体验
Conditioning and immersion
这个略微倾斜的圆形展亭位于椎体的半球和内面之间，营造出独特的空间体验，让人们从大厅的明亮逐渐进入到宇宙剧场中核心的昏暗中，感受这里的人造天空。外露结构的CLT模板高达17米，形成巨大的切面；浩瀚无边，让人做好进入太空的准备。缓和的坡道引导观众进入观众席的顶部，位于投影穹顶的下方，穹顶的悬浮与倾斜度增强了身临其境的效果。极少灯光照亮具有高度吸收系数的夜蓝色空间。6台数字投影机环绕四周，人们可通过环绕大厅的公共走廊进入。
▼走廊，Gallery ©Maxime Delvaux
Tucked between the cone’s hemisphere and its inner face, the slightly slanted circular gallery offers a spatial experience in which one goes from the brightness of the hall to the penumbra essential to the cosmic theatre, where artificial skies are made. The CLT wood panels of the exposed structure rise to a height of 17 metres, forming giant facets; a vastness that prepares one for a journey into space. The gently sloping ramp leads the spectator to the top of the auditorium, beneath the projection dome whose suspension and inclination heighten the immersive effect. The lighting is minimal, illuminating a night blue environment with a high absorption coefficient. The 6 digital projectors laid out around the perimeter are accessible via the technical gallery that surrounds the room.
▼走廊细部，Details of the gallery ©Maxime Delvaux
俄罗斯套娃
Russian dolls
（椎体、穹顶和屏幕）的嵌套体量与精密性要求采用特殊的结构方案悬挂投影屏幕。建造过程中需要采用非常规的安装逻辑，例如在安装圆锥体的覆盖外壳之前先安装穹顶的金属圆顶。
▼投影，Projection ©Maxime Delvaux
The nestled volumes (cone, dome, screen) and the precision required for the suspension of the projection screen led to special constructive solutions. It involved an atypical assembly logic during the building phase, such as the mounting of the planetarium’s metal dome prior to that of the cone’s covered enclosure.
▼观众席，Auditorium ©Maxime Delvaux
碳化木材、浅色木材、紧凑性：环境与审美的考量
Burnt wood, light-coloured wood, compactness: an environmental and aesthetic concern
建筑外层采用碳化木材，内层采用浅色木材与涂料：建筑采用的材料种类少，简洁并且具有对比性。在外观上，花旗松板条的烧焦薄膜强化了建筑的碲钉状或火山状外观，其深棕色-黑色纹理在低角度的阳光下呈现出银色反光。内部采用浅色木材覆盖，为大厅营造出明亮的氛围。建筑的紧凑性以及大厅一侧的开窗位置，极大地限制了建筑的热量损失，从而确保了最佳环境能效。
Burnt wood and aluminum on the outside, light-coloured wood and plaster on the inside: the materials used for the building are few, simple, and contrasting. On the outside, the building’s telluric or volcanic appearance is reinforced by a charred film of Douglas fir slats, whose deep brown-black texture takes on silvery reflections in low-angled sunlight. Inside, light-coloured wood panels take over, contributing to the hall’s bright atmosphere. The compactness of the building, and the positioning of the openings on the hall side, greatly limit the building’s heat loss, thus ensuring optimal environmental performance.
▼立面木材，Wood material on the facade ©Maxime Delvaux
科学园，一个公共花园
The Jardin des sciences, a public garden
花园位于两条街道之间，被设计为连续的绿色环境，从北部阴暗的灌木从一直延续到南部树林点缀的草地。除了现有的树林美景外，高大的乔木和开花的灌木将营造带有浓郁秋色的大地氛围，与附近植物园的多样性相映成趣。在南面，一条长长的由植被覆盖的沟渠能够排水，扩大生态系统的范围。为了让场地增添光彩，8个环形花园（星座）种植了各种植物和矿物覆盖物，与动物学和地质学机构，以及植物园相呼应，同时也暗示着太阳系中的8个行星。
▼室内概览，Overview of the interior ©Maxime Delvaux
Running between the two streets, the garden is designed as a succession of plant environments, from shady undergrowth in the north, to tree-dotted meadows in the south. In addition to the beautiful existing trees, high-growing trees and flowering shrubs will create a woodland atmosphere with strong autumnal colors, mirroring the diversity of the nearby Botanical Gardens. To the south, a long plant-covered ditch regulates rainwater and broadens the ecosystems’ range. To accent the site, 8 circular gardens (the constellations) feature a variety of plants and mineral mulches, which echo the institutes of Zoology and Geology, as well as the Botanical Garden, while also alluding to the solar system’s 8 planets.
▼总平面图，Masterplan © frenak+jullien，Cardin Julien，m+mathieu holdrinet
▼屋顶场地平面图，Roof site plan © frenak+jullien，Cardin Julien，m+mathieu holdrinet
▼首层平面图，Ground floor plan © frenak+jullien，Cardin Julien，m+mathieu holdrinet
▼屋顶平面图，Roof plan © frenak+jullien，Cardin Julien，m+mathieu holdrinet
▼剖面图，Section © frenak+jullien，Cardin Julien，m+mathieu holdrinet
Project name
Planétarium du Jardin des sciences de l’Université de Strasbourg
Location
27 Boulevard de la Victoire, 67000 Strasbourg, France
Client
UNISTRA – Université de Strasbourg
Program
15 m diameter projection room with services, Jardin des sciences reception area, cafeteria, educational room and store.
Competition
Invited competition, winning project (2016)
Opening
Summer 2023
Floor area
Building 1000 m2, garden 5000 m2
138-seat screening room
Construction cost
5 000 000 € excl. tax (including garden)
Project team
Architecture
frenak+jullien lead architects
Cardin Julien, associate architects
m+ mathieu holdrinet, project architect
Landscape architecture
FORR
Structural engineering
MaP3
Mechanical-electrical engineering, energy efficiency and sustainable development
Espace Temps
Civil engineering
OTE
Scenography
dUCKS sceno
Acoustics
Lamoureux
Signage
Téra-création
Economy
Echoes
Construction
Wood framing
Charpente Houot
Structural works
Bringholf Constructions
Dome metal structure and plaster
ADLER
SIRC
Insulated burnt wood cladding
Martin Fils
