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Optical Glass House / Hiroshi Nakamura & NAP第1张图片


这座住宅位于日本广岛城市中车流不息的大路旁。建筑师用一面美丽的光学玻璃墙为
建筑隔出了隐私和安宁,隔出了若隐若现的丰富城市景色,隔出了过滤的来自东向的
美丽日光。入口门厅头顶天花开了一个方口,安装一片玻璃,上面附上一层薄薄的,
流动的水膜。经过过滤的阳光穿过树影斑驳的落在客厅的地面上,超级轻盈的金属镀
膜窗帘在风中若有若无的舞动。这里地处闹市,却可以安然享受宁静,享受城市的丰
富,享受不断变化的光还有四季之美。
这面面光学玻璃墙由特别打造的6000块纯玻璃块(50毫米x 235毫米x 50毫米)组
成。这面墙有效的阻隔了声音,却能引入城市的风光。建筑师采用了透明度极高的玻
璃品种。玻璃加工是非常不容易的,除了精度要求,还需要经过两次缓慢冷却除去玻
璃本身的应力。玻璃表面的细微粗糙为建筑带来了不可预计的光影效果。

因为玻璃墙具有8.6mx8.6米的巨大尺度,因此建筑师将每个玻璃进行穿孔,用钢索传
奇他们,为了避免侧向应力,建筑师在用不锈钢扁钢进行横向固定。最后的效果实现
了玻璃砖严丝合缝的对接和完整的玻璃墙,看起来如泛着光芒的清新"瀑布"。这个瀑布
重13吨,由顶上悬挑的钢梁支撑,四条竖向的主龙骨与花园楼板结构相连,均匀分力,
实现了结构最小化。
Optical Glass House / Hiroshi Nakamura & NAP第2张图片



Optical Glass House
This house is sited among tall buildings in downtown Hiroshima, overlooking a street
with many passing cars and trams. To obtain privacy and tranquility in these
surroundings, we placed a garden and optical glass façade on the street side of the
house. The garden is visible from all rooms, and the serene soundless scenery of the
passing cars and trams imparts richness to life in the house. Sunlight from the east,
refracting through the glass, creates beautiful light patterns. Rain striking the water-
basin skylight manifests water patterns on the entrance floor. Filtered light through the
garden trees flickers on the living room floor, and a super lightweight curtain of sputter-
coated metal dances in the wind. Although located downtown in a city, the house
enables residents to enjoy the changing light and city moods, as the day passes, and
live in awareness of the changing seasons.


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Optical Glass Façade
A façade of some 6,000 pure-glass blocks (50mm x 235mm x 50mm) was employed.
The pure-glass blocks, with their large mass-per-unit area, effectively shut out sound
and enable the creation of an open, clearly articulated garden that admits the city
scenery. To realize such a façade, glass casting was employed to produce glass of
extremely high transparency from borosilicate, the raw material for optical glass. The
casting process was exceedingly difficult, for it required both slow cooling to remove
residual stress from within the glass, and high dimensional accuracy. Even then,
however, the glass retained micro-level surface asperities, but we actively welcomed
this effect, for it would produce unexpected optical illusions in the interior space.


Optical Glass House / Hiroshi Nakamura & NAP第14张图片


Waterfall
So large was the 8.6m x 8.6m façade, it could not stand independently if constructed by
laying rows of glass blocks a mere 50mm deep. We therefore punctured the glass
blocks with holes and strung them on 75 stainless steel bolts suspended from the beam
above the façade. Such a structure would be vulnerable to lateral stress, however, so
along with the glass blocks, we also strung on stainless steel flat bars (40mm x 4mm) at
10 centimeter intervals. The flat bar is seated within the 50mm-thick glass block to
render it invisible, and thus a uniform 6mm sealing joint between the glass blocks was
achieved. The result —a transparent façade when seen from either the garden or the
street. The façade appears like a waterfall flowing downward, scattering light and filling
the air with freshness.


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Captions
The glass block façade weighs around 13 tons. The supporting beam, if constructed of
concrete, would therefore be of massive size. Employing steel frame reinforced
concrete, we pre-tensioned the steel beam and gave it an upward camber. Then, after
giving it the load of the façade, we cast concrete around the beam and, in this way,
minimized its size.


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project name: Optical Glass House
main purpose: Housing
Design: Hiroshi Nakamura & NAP Co.,Ltd.
structure design : Yasushi Moribe
contractor : Imai Corporation
location: Naka-ku, Hiroshima-shi, Hitroshima, Japan
Site area: 243.73m2
Total Floor area: 363.51m2
completion year: March,2012
structure : R.C.structure
Photographer: 
(c)Koji Fujii_Nacasa & Partners Inc
(c)Hiroshi Nakamura & NAP Co.,Ltd.




本文来源于:http://www.nakam.info/
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