Sky city 1000

The Japanese company "Mori" in 1989 introduced to the world a project developed in 1988 for a 1000- meter skyscraper -city in 196 floors called "Tokyo's Sky City". It provides space for 35,000 people, and another 100,000 could work here. And in order to turn a skyscraper into a full-fledged city, a large number of shops , green areas , sports grounds and gyms are planned in it.

The building will be based on 6 giant columns , between which 14 platform sectors the size of a stadium will be located at a distance from each other. The foundation platform will have dimensions of 400 by 400 meters, and the uppermost will narrow in diameter to 160 m. For each column, 200,000 tons of steel will be needed, which will cost 250 million . dollars . In addition to these columns, there will be no other (for example, internal) support for the structure - it will be held on the basis of the skeleton . The total weight of the building will be 5.5 million tons , which is comparable to the total weight of the entire population of Japan .

The total area of ​​the building should be 800 hectares , 240 of which will be occupied by parks and roads.

Mori plans to populate residents during construction. As soon as one platform is ready and the workers begin to create the next, tenants will be able to occupy their apartments .

Unlike other similar projects ^{[ what? ] the} creation of ultra-tall buildings, Tokyo's Sky City was not created to advertise an engineering company . The main reason is the desire to free the territory of overpopulated Tokyo , in which more than 12 million people live today. According to Mori engineers and independent experts , growing houses up and turning them into full-fledged autonomous city cells will help to cardinally overcome permanent traffic jams and houses closely pressed to each other, which will save a huge amount of time for residents of the city: most of them spend every day on the road to work and from work from 2 to 4 hours, which for a lifetime is summed up in 6 years . According to the project of engineers, in the future it will be possible to join in clusters several nearby “heavenly cities”.

The implementation of the project is not so far from reality for another reason: a few years ago ^{[ when? ]} Mori has already created the first skyscraper city, Roppongi Hills , which now houses 2,000 people. However, this project, judging by its characteristics, is more serious and large-scale.

The project paid a lot of attention to life safety, and not only because of frequent earthquakes , as fires and strong winds can become fatal for the inhabitants of a skyscraper.

Seismic and natural activity

At the Takinaka Institute, scientists used a number of designs and tests to create the perfect foundation for Sky City 1000. . Previously, it was strengthened by digging deep underground, but, given the peculiarities of Tokyo soils , the basement of the Heavenly City would have to be made twice as long as its height above the ground. Therefore, it was thought to deepen into the surface a large number of deep pipes and pour them with concrete, which will create a fixed base for the building.

The wind is also dangerous for the construction, because even a light breeze , as tests on models showed, would swing a 1000-meter building. On the basis of this, firstly, it was decided to round the contour of the structure, and secondly, to make free space between the platforms so that the wind meets less resistance. Using a standard pendulum counterweight in the center of the building, which would dampen the swing, was impossible, since, given the weight of the structure, its weight would be 27 thousand tons. So the engineers decided to use a special hydraulic engine to control the counterweight, which allowed to reduce its weight by many tens of times. Between floors, it is planned to make inserts of special rubber , which would reduce the deformation of the structure during typhoons ^[1] .

Fires

The bottom and walls of each of the 14 platforms should be made of refractory materials. Also, each block platform should consist of 6 separate sectors , between which the fire will not be able to spread. In the event of an open fire, special helicopters with long-range hoses and a tank for 1,000 liters of water will fight the fire, capable of refueling it anywhere - from the pool and other places .

Engineering and ideological innovations of the project:

• special, skeletal structure of the building;
• self-propelled three-deck elevators with speeds exceeding 90 km / h , and the monorail will provide a capacity of 100,000 during rush hours ;
• the use of unique Big Krona construction robots, a self-lifting construction platform with 4 hydraulic jacks, which gradually raise it as the building is being built. Giant computerized crane lifts will also be used, reading a special barcode on the blocks and independently mounting them in the right place according to the drawings .

There are three ways to move around a skyscraper. The first way is a trip on a high-speed elevator , designed for 70 people, which can move both vertically and horizontally. There will also be trains carrying passengers from the base of the skyscraper to its top. The third way - "air cars" ( born Air Wagons ).

It will be three times higher than the tallest building in Japan ^{[ what? ]} and weigh, as the entire population of the country taken together , which in turn provides for some difficulties. For example, the columns will be assembled from massive steel plates welded together. Moreover, all the steel to create 6 supports can be spent on the construction of 36 aircraft carriers (there are three times less of them in the US Navy), and it will take 12 years for the average steel mill to produce such a huge amount of material . To speed up the process, deliveries are expected from factories around the world. In addition, one fully robotic plant is planned to be built right next to the construction site.

Although the project is considered more seriously than many of its alternatives , it is still attributed to such buildings that are difficult to implement in the near future, such as, for example, “ X-Seed 4000 ”. However, representatives of the company claim that they will realize their plan for 20 years .

• X-Seed 4000

• Takanaka Corporation
• A brief article on Sky City 1000
• Volumetric article about Sky City