skyoffice

几个经典的高层办公楼
1福斯特
Foster & Partners - Millennium Tower
Tokyo
Tokyo is among the ’megacities’ forecast to exceed populations of fifteen million by 2020. The Millennium Tower scheme challenges assumptions about such future cities. It presents a timely solution to the social challenges of urban expansion on this scale and to the particular problems of Tokyo, with its acute land shortages. Commissioned by the Obayashi Corporation, it provides 1.04 million square metres of commercial development, stands 170 storeys high and is the world’s tallest projected building.
Rising out of Tokyo Bay, two kilometres offshore, the tower is capable of housing a community of up to 60,000 people, generating its own energy, processing its own waste and with its own transportation system. This vertical city quarter is self-sustaining and virtually self-sufficient.
The lower levels accommodate offices, light manufacturing and ’clean’ industries such as consumer electronics. Above are apartments, while the topmost section houses communications systems and wind and solar generators, interspersed with restaurants and viewing platforms to exploit the spectacular views.
A high-speed ’metro’ system - with cars designed to carry 160 people - tracks both vertically and horizontally, moving through the building at twice the rate of conventional express lifts. Cars stop at intermediate ’sky centres’ at every thirtieth floor; from there, individual journeys may be completed via lifts or escalators. This continuous cycle reduces travel times - an important factor in a vertical city, no less than a horizontal one. The five-storey sky centres have different principal functions - one might include a hotel, another a department store. Each is articulated with mezzanines, terraces and gardens to encourage a sense of place.
Developed in response to the hurricane-strength wind forces and earthquakes for which the region is notorious, the tower’s conical structure, with its helical steel cage, is inherently stable. It provides decreasing wind resistance towards the top - where it is completely open - and increasing width and strength towards the base to provide earthquake resistance.
The project demonstrates that high-density or high-rise living does not mean overcrowding or hardship; it can lead to an improved quality of life, where housing, work and leisure facilities are all close at hand.

Area: 1.040.000 m2
Height: 840 m
Client: Obayashi Corporation
Consultants: Obayashi Corporation