混凝土外壳住宅

公司：	IKAWAYA Architects	类型：	建筑
地区：	日本	标签：	别墅私宅

项目用地是一个面向街道的9米宽、26米深的狭长地带。我们首先在高度限制和后退准则的范围内建立了一个最大体量的 "外壳"。然后，我们在 "壳 "体量的理想位置打上 "洞"，在这些地方，我们一致认为适合引入自然光和风。

The project site is a narrow stripwith 9m width facing the street and 26m deep. There we first established a “shell” of maximum volume within the height limitations and setback guidelines. Then we punctuated “holes” to desirable places of the “shell” volume where it was agreedsuitable to incorporate natural light and wind.

在 "洞 "内，我们创造了与其相邻房间相关的植物花园：地下室的 "下沉花园"，底层的 "橡子花园"和二层的 "餐厅花园"。通过 "打破"外壳的顶部，我们在屋顶放置了一个 "空中花园"。所有分散的花园都用外部楼梯连接起来。

Inside the “hole”, we created garden with plants that relates to its adjacent room; a“sunken garden” at the basement, an “acorn garden” on the ground floor and “dining garden” on the second floor. By “breaking” the top of the shell, we placed a “sky garden” at the rooftop. All the dispersed gardens are linked with an exterior stairway.

在场地的最南端深处，有一棵7米高的橡树作为房子的象征树。我们在地基工程之前就种下了这棵树，因为房子的结构竖立起来后，就无法到达场地的最深处。可以说，这棵橡树从施工开始就一直守护着这座房子。

At the deep southernmost part of the site, there is a 7m tall oak tree as the house’s symbol tree. We have planted the tree in prior to the foundation work since it would be impossible to reach the deepest area of the site after the structure of the house is erected. We could say that the oak tree was watching over the house since the start the construction.

“混凝土外壳”具有很高的热容性，因此，混凝土墙的热容量使室内温度变化适中。同时，通过外墙和内墙混凝土的同时暴露，形成了整个房屋的连续感。为了保持这种连续性感，应用了箱涵结构体系，取消了垂直于隧道空间的隔墙。最终，实现了一个 "坚固"而又 "拥抱"的混凝土结构。

The “shell” incorporates the exterior insulation method. Thus, the heat capacity of the concrete wall enables a moderate change in interior temperature. Also, by exposing both exterior and interior concrete walls, it forms a sense of continuity throughout the house. The box culvert structure system was applied to maintain such sense of continuity and eliminates partition walls perpendicular to the tunnel space. In the end, a “strong” but also “embracing” concrete structure was achieved.