CSN总部办公楼扩建，加拿大 / BGLA + NEUF architect(e)s

建筑师设计的这个LEED银级扩建项目新近获得了Grands Prix du Design公共空间类设计大奖，项目为CSN总部提供了一种全新的生活，提升了使用者和周边居住者的生活质量。CSN (Confédération des syndicats nationaux)总部位于Ville-Marie区，Jacques-Cartier桥的东部，是一座80年代早期的野兽派建筑，建筑师希望去除它沉重严肃的建筑外形。重新开发和扩建措施改善了建筑形象，建筑师在保留其原有本质和特征的同时增强了建筑的美感和对周边社区的影响。整个项目的灵感来源于CSN一直以来的价值观：自主、自由、团结。

Recently awarded at the Grands Prix du Design, category “common area”, this LEED silver expansion project offers a new everyday life at the CSN’s head office, thus improving the quality of life of users and residents of the neighborhood. Located in the Ville-Marie district, east of the Jacques-Cartier Bridge, the head office of the CSN (Confédération des syndicats nationaux), a brutalist building from the early 80s, wanted to get rid of its heavy and severe image. This image has been transformed through a redevelopment and an expansion amplifying the aesthetics of the building and its impact on the neighborhood, while preserving its essence, its identity. The entire project is inspired and anchored in the continuity of the values of the CSN: autonomy, freedom, solidarity.

▼CSN总部办公楼外观，exterior of the CSN headquarter offices  ©Stephane Brugger

概念策略|Conceptual Approach

扩建项目的目标是加强这一区域建筑与社区的景观。一个彩色的巨大体量作为现有建筑的延续，但相对更加自由、表现多样、具有互补性和统一性。新花园完善了场地空间，为使用者和周边居民提供了一个真正放松和交流的区域。

The expansion project is designed to enhance the architectural and social landscape of the area. A large volume of color develops in continuity with the existing building, but now more freely, expressing diversity, complementarity and unity. A new garden completes the development of the site and offers users and residents of the neighborhood, a real area of relaxation and exchange.

▼彩色巨大体量连接现有建筑，新花园作为空间补充，a large volume of color develops in continuity with the existing building and a new garden completes the development of the site  ©Stephane Brugger

建筑核心概念是两个体量的共生，木材体量与钢材体量通过一个沐浴在自然光线的大中庭和谐地融合在一起。这个宽阔自由、明亮、统一地方是一个真正的公共空间。它起到了强有力的连接作用，既通过扩建与现有建筑连接又让联盟成员之间建立联系。办公室都位于扩建体量的一侧，走廊和连接桥沿着中庭布置。首层和花园层是公共功能区，包括会议室、餐厅、多功能室、书店和图书馆。“圆环”平面具有很大的灵活性，能够在长时间的使用中，根据联盟成员的增长或减少进行调整。

▼办公建筑入口空间，entrance of the office  ©Stephane Brugger

▼入口空间与中庭之间的楼梯及交通空间，stairs and circulation space between entrance and the atrium  ©Stephane Brugger

At the heart of the architectural concept is the symbiosis of two volumes, one of wood, the other of steel, blending harmoniously in a vast atrium bathed in natural light. A true metaphor of the public space, at once free, luminous and unifying, this grandiose place acts as a strong link; uniting the existing building with its expansion, as well as the different members of the confederation. The offices are all located at the perimeter of the enlarged volume and around this atrium lined with passageways and crossed bridges. Above the ground floor and the garden level are the common functions: the meeting rooms, the cafeteria, the multifunctional room, the bookshop and the library. The “circular” floor plan offers great flexibility that will allow the growth or decline of the different federations over the years.

▼阳光充足的中庭空间将建筑体量整合在一起，the two volumes blends harmoniously in a vast atrium bathed in natural light  ©Stephane Brugger

▼走廊与连接桥都以中庭为中心布置，around this atrium lined with passageways and crossed bridges  ©Stephane Brugger

▼从连接桥另一侧看向用餐区，view from the other side of the cross bridges to the interior dinning area  ©Stephane Brugger

▼首层的餐厅与用餐区，cafeteria and dinning area on the ground floor  ©Stephane Brugger

▼木制体量与钢结构体量，wood and steel volumes  ©Stephane Brugger

▼办公室沿着新建建筑的一侧布置，the offices are all located at the perimeter of the enlarged volume  ©Stephane Brugger

▼空间细节，space details  ©Stephane Brugger

高强度木材|Enhancing Wood

木材、混凝土和钢材展现出这一地方和区域特有的工业，也代表了CSN工会。中庭设计目的也在于展示这些材料。特别需要注意的是，木材是这个项目最主要的元素，是建筑的公共空间的建筑材料。这些空间对联邦来说具有高度象征意义，它代表着不同的成员之间通过一个共同的使命团结凝聚在一起。精心使用的木材在共享空间中得到强调，如中庭、餐厅、多功能室。采用精致工艺的木材与混凝土、钢相结合，增加了空间美感，代表了工作者丰富的专业知识，呼应了CSN的本质。项目挑选使用的不同类型木材都来自以联邦工会为代表的地方和区域工业。枫树由于其颜色、强度和特性，是项目内部广泛使用的装饰材料。

Wood, concrete and steel were used to express the know-how of local and regional industries, represented by CSN unions. The atrium was designed to highlight these raw materials. In particular, wood is the predominent element of this project, since it is associated with the collective spaces of the building; these places, highly symbolic for the Confederation, unite its different members and gather them around the same mission. The careful use of wood allows emphasis to be placed on these spaces of sharing; including the atrium, the cafeteria and multifunctional rooms. Combined with concrete and steel, finely worked wood enhances the aesthetics of these collective spaces and represents the wealth of know-how of the workers, recalling the essence of the CSN. The different types of wood chosen for the design of the project all come from local and regional industries represented by the Confederation’s trade unions. Maple was the main type of wood used in various ornamental applications for its color, strength and identity.

▼木材、混凝土和钢材突显出这一区域特有的工业，wood, concrete and steel were used to express the know-how of local and regional industries  ©Stephane Brugger

▼场地平面，site plan

▼二至四层平面，level 2-level 4 plans