设计师成立工作室以来，将建筑设计成自然环境的想法从未改变，但最近这种理念的模式发生了些许变化。尽管包含差异的形式和空间可以容纳多种可能性，“自然”却看似一种无法被完全控制的介入。在设计团队设计大田区的艺术博物馆&美术馆项目时，他们让公众参与重要的设计决策，上述的理念模式也由此发生转变。最终，设计师发现建筑融入了某种异质感和自然性。在这种情况下，建筑如何恰当地融入南大冢混杂的环境中成为叠屋设计的出发点。
The idea of designing architecture like a natural environment has not changed since I have founded my own office but recently its way of thinking has changed a bit. Even though the soft form and the space containing the difference have the certain possibility, it seems that “naturalness” is considered as the degree of influx of things that cannot be controlled completely by others. The turning point was the experience of opening important design decisions to the discussion with the public when we were designing ART MUSEUM & LIBRARY, OTA. As a result, I felt that something like a mixture of heterogeneity or nature flowed into architecture. It was such a circumstance that the question of how miscellaneous in Minami Otsuka could flow the nature of a city with a fundamental comfort is the starting point of this Overlap House.
▼项目外观，external view © Daici Ano
基地位于坡地地块一角，周围散布着公园、独立住宅花园等绿地。由于城市用地不断扩张，设计师便将建筑同斜坡结合，然后利用坡度和高差将集合住宅的三个单元堆叠起来并在其中置入花园。堆叠处理影响下层单元的天花布置，同时形成通往上层单元的斜坡。每个单元的室内外都因此获得高差，形式和外观也随之形成。另外，连续的室外灰空间变成了住宅的花园。在设计过程中，设计团队研究了用白色材质堆叠的体块。相邻的独立住宅因防火规定设置了独特的立面，主要街道周边还有瓷砖材质的建筑。在如此混杂的环境中，建筑师的白色品味产生一种褪色的感觉，仿佛正在切割城市。最终的建筑外观反映了周围不同元素的颜色，从建筑底部往上走，屋顶和外墙的杂色随着地面、城市和天空的改变而改变。虽然色块顺序由算法随机决定，却不失整体的连续感。
▼设计理念，design concept © Akihisa Hirata Architecture Office
▼模型，model © Akihisa Hirata Architecture Office
▼周边建筑材质拼贴，collage of surrounding buildings’ materials © Akihisa Hirata Architecture Office
The site is a corner surrounded by a relatively steep slope. In the surrounding area, green such as parks and garden of detached houses are dotted along the undulating terrain. As expansion of the ground surface of the city like this, we first take the building continue into the slope. Then, idea of drawing the slope and difference of levels into the building and realising the collective housing has three house units overlapped we have reached the idea to stuck the three detached houses with gardens. The action of stacking affects the ceiling of the lower floor while creating a slope up to the upper floor. Both inside and outside of each house gain the terrain allowed difference of levels, at the same time it brought somethihg like a form of house and appearance. On the other hand, a continuous external space as a void becomes a garden as an imaginary home. In the process so far, we had been studied the volume stacking with white materials. However, neighboring detached houses have unique facade because of the fire protection area’s regulation, along the main street there are tiled buildings. In this town with miscellaneous comfort, the white of architects’ taste is indeed a bleaching feeling as though it were cutting the city. The appearance reflecting the ordinary colors of the various elements in the surrounding city is like simulating. The roof and exterior wall of the slate’s mottled color gradually changes according to the gradation of the ground, city and sky as it goes up from the bottom. The pattern of color which does not lose the whole continuous feeling even if it is applied in a random order at the construction was decided using an algorithm.
▼建筑与坡度结合，combination of building and slope © Daici Ano
▼花园，garden © Daici Ano
这座建筑就像融入城市的花园般通透，同时也是独特的存在。这里不封闭，是向周围环境开放的单人或家庭宅基地。从室内到花园，道路和街上的人们、标识、甚至邻居的树都如同花园的延伸，为这座小型集合住宅带来惊喜的拓展。这是住宅形态超越了物理边界、成为景观的结果。
This architecture is a transparent place like a garden blending into the city, and it is also a unique existence with a strong identity. But there is not a closed singularity, it is a base of individual or family opening to the surrounding area. From the inside through the garden of void, roads and people walking on the street, signs and even neighboring trees are felt as if they are extensions of their own garden. It brings an amazing expansion to this small apartment complex. It is because the house of consciousness that spreads infinitely beyond the physical boundary becomes a landscape.
▼室内空间向花园开放，the interior space is open to the garden © Daici Ano
该建筑的外观反映了城市历史主导的分层思考，将协调与不协调注入城市。协调是融入过去，不协调是造就新鲜。在变迁过程中，这座城市在旧历史中创造新历史，呈现出独特的风格。如同生活方式一样，它在演变的进程中融入自身，既不抹去历史，也不切断历史，而是创造性地将新旧分层，提升城市的活力。彼时，房屋将不再受限于物理约束，其形态将无限延展，成为像文章开头提到的具有自然环境品质的地方。
The appearance reflecting the layered thinking, led by the city’s history, brings a sense of unity and incongruity into the city. The sense of unity is to let the past flow in, and the sense of incongruity is freshness. The city folds a new history in the own history in the flux of time to acquire a distinctive taste. It is the same as the way of life, expressing evolutionary history while incorporating it into the body. Erasing the history of the city nor cutting them off, layering them up creatively. It will increase the fraction of life in the city. And at that time the house will cease to be an area confined to the physical constraints and it will be a place for consciousness spreading out endlessly, a place with quality like the natural environment in the sense mentioned at the beginning.
▼夜景，night view © Daici Ano
▼施工现场，construction site © Akihisa Hirata Architecture Office
▼区位图，location © Akihisa Hirata Architecture Office
▼平面图，plans © Akihisa Hirata Architecture Office
▼剖面图，section © Akihisa Hirata Architecture Office
▼构造细部，details © Akihisa Hirata Architecture Office
▼雨水收集，rainwater collection © Akihisa Hirata Architecture Office
Site : Minami-ostuka, Toshima-ku Tokyo, JAPAN Design period : February 2016 – June 2017 Construction period : June – June 2018 Structural engineer : Masato Araya, Atsuhiro Sao (Oak Structural Design Office) General contractors : O’hara Architectural and Construction, Ltd. Site area : 117.08 sqm. Built area : 88.25 sqm. Total floor area : 177.49 sqm Program : Apartment Floors : 3 Height : 11.3m Structure : Steel
