首尔KB Youth大台阶
KB Youth Step / Faculty of Hongik University School of Architecture

由专筑网李韧，邢子编译

来自建筑事务所的描述：KB Youth大台阶是KB Kookmin银行Seokyo支行的改造项目，原有建筑由Space Group于1968年设计。这座建筑有着楼梯形态的内部公共区域，将城市现代风格引入建筑内部，同时为这座明显缺乏集散空间的城市带来了兼具开放和隐私特征的银行建筑。其主要设计概念总结如下：

Text description provided by the architects. The KB Youth Step has transformed the Seokyo branch building of KB Kookmin Bank, designed by Space Group in 1968, into a cultural facility for young people. This building contains within it the idea of contributing to society as a public space in the form of a stair plaza, which will invite an urban style into the building and open a private bank building towards a city in which there is no available room for a square. The main design concepts can be summarized as follows:

公共性

整个设计的出发点是这个区域并没有足够的公共休闲空间，KB Kookmin银行的小型私人建筑的设计概念主要是在其中设置一个大型阶梯式平台，从而形成公共集散场所，设计的目的是让KB Youth大台阶项目形成公共的开放空间，而非封闭场所，让银行的金融机构面向大众服务，而非单纯地服务于少部分人。大台阶从一层一直延伸至二层，主要功能是社交场所，人们既可以在这里休息，也可以在这里进行简短的讨论，亦或是举行诸如街头表演等公共活动。

Publicity
The starting point of this design was the idea that there is no public space offering the convenience of seating when on a walk in this area. The guiding concept for the small private building of KB Kookmin Bank was to insert a terraced element to serve as a public space near Hongik University. The intention was to make the new KB Youth Step a public space open to the city rather than a closed area, and to let the accumulated capital of the financial institution serve in the public interest rather than for only certain individuals or members. The stair plaza, reaching from the first floor to the second, has been planned as a place for events, and as a space in which people can take a rest, use as a meeting place, or perform various activities such as busking and street performances.

拓扑布局形态
   
在项目中，建筑师运用建筑与城市拓扑布局的形式构思空间场所，从而形成公众意识。大台阶在二层折叠，并反向延伸至屋面，因此形成了两个室内楼梯广场和两个室外露台广场。大台阶从地下室至屋面形成了连续的循环流线系统，将城市人群引入建筑。地所的模糊界定将公共空间和建筑结合起来，当建筑面向城市与公众开放时，其拓扑空间则形成了城市公共场所，而非单纯的私人空间。

Topology
In this building, topology plays with architectural and urban methodologies to create spatial structures that realize a sense of publicity. Folded to lead to the second floor and folded again to get to the rooftop, the stairs create two indoor stair spaces and two outdoor stair plazas. The stairs create a continuous circulation from basement to rooftop, naturally attracting urban circulation into the building. An ambiguous division of floors mix the spaces and the building is integrated with the city topologically. Topological spaces connecting a building with the city realize a kind of topological publicity when open to the public and the city, rather than used as a private space.

历史气息

建筑的历史性在于保留能够唤起城市记忆的建筑立面形态，同时尊重城市的文化传统，并且将城市肌理引入建筑从而形成特殊的空间结构。在这里人们能够看到城市历史的框架与痕迹，室内空间原有的楼梯、柱子、砖石墙体、地面等都得以一一保存下来，为人们展现城市的过往痕迹。

Historicity
History is to be respected and memory to be preserved by keeping a building’s façade associated with the memory of a city and attracting the urban fabric to create a spatial structure. People can look at the city through the trace and frame of history. The indoor direct stairways, columns, brick walls and floors are also preserved to allow visitors to experience the traces of the past.

空间灵活性

在楼梯平台空间的内部，建筑师设置了折叠式屏风，这样让整个空间既可用作表演场所和小剧院，同时也可以作为阅览室、咖啡厅、休息区等。而室外楼梯和屋顶平台同样适用于各种功能，例如休息、放松、表演、聚会等等，这些布局都将城市的活力引入Hongdae区域。

Flexibility
The indoor stair space, equipped with a foldable screen, can be used not only as a performance hall and theatre but also as a book café, resting place, and reading room. The outdoor stairs and rooftop space can become a place for various purposes and uses, such as contemplation, relaxation, performance, busking, parties, among others, all realizing the concept of inviting the  liveliness of the city into the Hongdae area.

   
建筑设计：Faculty of Hongik University School of Architecture
地点：韩国首尔
主创建筑师：Youngsoo Lee, Hyunho Lee, Yong Soon Chang, Kyung Sun Lee, Sooran Kim
执行建筑师：Sidam Architects- Shiweon Kim, Taeho Kim, Ungjae Lee, Boungcheol Jun, Yoojin Jeong, Jengyun Im, Sooyeon Kim
面积：1261.83 m2
项目时间：2018年
摄影：Namsun Lee
室内设计：Studio SAII – Sanghee Yoo, Eunyoung Song
场地管理：Jiin Choo(KB Kookmin Bank)
结构工程：CGSPlan
机电工程：Sungwoo EME
施工：Ean R&C
客户：KB Kookmin Bank

Architects: Faculty of Hongik University School of Architecture
Location: 345-9, Seogyo-dong, Mapo-gu, Seoul, South Korea
Lead Architects: Youngsoo Lee, Hyunho Lee, Yong Soon Chang, Kyung Sun Lee, Sooran Kim
Execution Architecture: Sidam Architects- Shiweon Kim, Taeho Kim, Ungjae Lee, Boungcheol Jun, Yoojin Jeong, Jengyun Im, Sooyeon Kim
Area: 1261.83 m2
Project Year: 2018
Photographs: Namsun Lee
Interior Architect: Studio SAII – Sanghee Yoo, Eunyoung Song
Site Manager: Jiin Choo(KB Kookmin Bank)
Structural Engineer: CGSPlan
Mechanical and Electrical Engineer: Sungwoo EME
Construction: Ean R&C
Client: KB Kookmin Bank