日本 “螺旋”住宅

狭长的城市型用地形状，可以说是东京最好的用地之一。夫妻二人的独栋别墅，需要满足道路、门面、地形、方向等所有条件，以及他们的限制。

Narrow city type site shape that can be said to be one of the best in Tokyo. It is a detached house for two couples who are required to meet all the conditions such as roads, frontage, terrain, and directions, and the restrictions imposed by them.

客户想要一个超封闭的空间。另一方面，日本也有要求在有限的小场地上获得最大的容积。当受到道路和海拔高度的限制，以及标示的对角线时，它就变成了一个宝石般的结构外观。建筑的体量不只是和它的大小成正比。根据方案，在视觉上尽可能地在一层给空间，在二层给深度，在三层给高度，把所有的场景连续连接起来，给建筑带来深度。你能做到吗？所以，我们尽量用钢架和钢板结构一起约束构件。

The client rarely (for our clients) wanted an ultra-closed space. On the other hand, there were also domestic demands for maximum volume on a limited small site. It becomes a jewel-like skeleton when restricted by roads and altitude and marked diagonal lines. The volume of architecture is not just proportional to its size. According to the program, visually give space as much as possible on the first floor, depth on the second floor, and height on the third floor to connect all scenes continuously and bring depth to the architecture. Can you do it? Therefore, we tried to restrain members as much as possible by using steel frame and steel plate structure together.

这样一来，平时只起到支撑窗纱的基材作用的弱质材料支撑了建筑，自由的外墙剥落到场地边界线，保证了建筑的宽度，4.8米的悬臂得到了保证。这样一来，使其达到凌空而立的高度成为可能。每层楼周围布置的螺旋楼梯和空隙，通过立体流线和视觉线连接，形成深层空间。

As a result, the weak material that normally only plays a role as a base material that supports the sash supports the building, the free outer wall peels off to the site boundary line to secure the width of the building, and a cantilever of 4.8 m is secured. This has been achieved, and it has become possible to reach a height that allows it to reach above the sky. Spiral stairs and voids arranged around each floor are connected by three-dimensional flow lines and visual lines, creating a deep space.

外表皮采用了弹性玻璃钢防水，力求做到无缝施工。我认为，非细节的体量拓展了这个建筑的感性。可以说，这个建筑是现代城市住宅的基点，以便找出密集城市的平衡点。

Elastic FRP waterproof was used for the outer skin, aiming for seamless construction. I think that the volume of non-details expands this architecture sensually. It can be said that this architecture is the base point of modern urban housing in order to scoop up the equilibrium of dense cities.

▽平面图 Plan

▽立面图 Elevation

Project name:  Spiral House

Company name: I.R.A./ International Royal Architecture

Website: https://iraap.jp/

Contact e-mail: info@iraaｐ.jp

Project location: City:Higashimurayama,Tokyo, Japane

Completion Year:2018

Building area (m²): 73㎡

Structual Engineer:Yasuhiro Kaneda

Construction: Ogawa Kyouritsu Construction Co., Ltd.

Garden design: GREFICA

Photo credits: Nobuyuki Nakagawa