How to build the highest lift in the world?

By the end of this decade, records like the tallest building in the world and the highest lift must be broken. But it will not be just another skyscraper, which none of us will ever know, if you see with your own eyes. This could change architecture as we know it. There are a few things that we don't think about. Entering an Elevator, we don't think about how many floors it can travel in principle, this task seems too complicated and useless for us. But the maker Kone has spent many years pondering this problem.





The Kingdom Tower (Kingdom Tower). According to various estimates, the construction of this building in Saudi Arabia will cost about $ 1.2 billion

"While the elevators are an integral part of urban landscapes, the technologies on which they stand, have reached the limits of height, — explains the Director of Santeri Suoranta. — Lifts that are of distance more than 500 meters are useless because the weight of the steel ropes on which they are suspended becomes too large, so that the ropes could support themselves."

10 highest buildings in the world — completed (completed) and in process of construction (under construction), to the left in the diagram is the height in meters





1 — Kingdom Tower, Saudi Arabia

2 — Burj Khalifa, UAE

3 — Suzhou Zhongan Centre, China

4 — Ping An Finance Centre, China

5 — Wuhan Greenland Centre, China

6 — Shanghai Tower, China

7 — KL118 Tower, Malaysia

8 — Makkah Royal Clock Tower Hotel, Saudi Arabia

9 — Golden Finance 117, China

10 — Baoneng Shenyang Global Financial Centre Town, China

But the company is gradually approaching the solution to this issue. After nine years of careful testing, it has introduced Ultrarope — a material composed of carbon fiber, coated with a special friction resistant material. It weighs seven times less than steel cable, is more energy efficient, has two times more life and, most interestingly, it substantially simplifies the construction of elevators that can go up to a height of one kilometer.

Up!



Other manufacturers, like Toshiba, Mitsubishi, Otis, Schindler etc. also moving up. Involved, for example, in contests to create the most environmentally friendly, cheap, simple and powerful lift.

But it is the creation of Kone was chosen for installation in the tallest building in the world.

Upon completion in 2020, the Kingdom Tower in Jeddah, Saudi Arabia, will stretch a kilometer in height and will boast the highest lift in the world with a lifting height of 660 metres.

He will also take the title of fastest double — Decker lift- one stall will be located above the other and to move at the speed of 10 m/s.

Slow and steady bodybugg Khalifa, with a height of 830 meters, is the current tallest building in the world. Its Elevator works between 163 floors, and covers a distance of 504 meters. Obviously, the number of floors that can drive lift, that's not all. "The movement of the Elevator is a powerful science, says David Cooper of the Institute of engineering and technology. — How a group of elevators, what are their size and speed."

There are two key measures that engineers must consider: first, the average waiting time that a passenger spends waiting for the Elevator. Typically, this is half of the interval between arrival and departure and the second one lifts. Secondly, throughput: maximum number of passengers that can be transported within five minutes, expressed as a percentage of the population of the building.

"The average waiting time in a nice office building is about 25 seconds with a bandwidth in the range of 14-17% in a five-minute window, adds Cooper. — So, even if you can drive all the way to the top with a new lightweight Elevator system, will remain limited because to increase the number of trips that you need to go back and forth."

Under землей



At the moment some of the tallest buildings in the world there are floors "transplant" on which passengers move from one lift to another. This helps to minimize the wait. But high-rise Express elevators that go from ground level on the high floors are more popular last but not least for fast flight.

Carbon fibre resonates at a higher frequency than steel, and, therefore, Elevator systems which use it will be more reliable. Vibration caused by wind in high-rise buildings, are currently the main reason for bringing the elevators down. In theory all is well. But if there is no building, no Elevator how to test this theory?

Kone believes that it can be checked on the Tytyri facility in Finland, there is an Elevator shaft with a depth of 333 meters under the ground.

"She's underground, she's not swinging, which means we can simulate different vibrational disturbances in the free atmosphere, explains Suoranta. — Another advantage is that underground conditions are harsh for the equipment. For example, humidity and temperature are very different from the usual buildings. This means that when components pass our underground tests, they are ready to be used in higher buildings of the world."

Magnetic pojemnikiem that 2030 will be 1.4 billion urban dwellers, and as urban space becomes expensive, the only direction of growth is upwards. Cooper believes that "magnetic levitation lifts" can be a good solution.

"Currently they work only in the horizontal direction; are you familiar with magliari train with magnetic suspension. While they are held in a magnetic way, but in a short time appears a vertical system is not in contact with the building; a purely magnetic".

Such a future may not be far off.

Manufacturer of elevators ThyssenKrupp develops and explores the Multi — a rotating lift system in which a few cabins go in the same Elevator shaft. This technology provides a certain architectural freedom, the only question which remains is only the desire and money.

Source: hi-news.ru