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Demolition and demolition are the pain of urban planning and construction. The average age of the house is 30 years, everything in the world has a life, the city's high-rise buildings are no exception, as for how to demolish in the future, with the development of science and technology, there are naturally more advanced methods to deal with, a thing to drop a thing, a boom and a li, a construction and demolition to pull the economy, promote consumption, the future building materials will be better and better the more environmentally friendly, resource recycling value.
It will be higher and more conducive to demolition and reconstruction. Innovation is endless, and it will be more professional and time-saving and labor-saving to dismantle in the future.
So many skyscrapers were built.
In order to maximize profits, real estate developers rack their brains to develop houses into the air, and residential buildings with more than 20 floors can be seen everywhere. According to the actual situation, it is speculated that most of the cement and steel buildings built in the seventies of the last century have become abandoned houses in this century. That is to say, after 30 years of use, such houses need to be remodeled or demolished and rebuilt due to natural damage, outdated supporting facilities, aging facilities, etc.
When the population naturally decreases or migrates, such houses naturally become vacant, and become a situation where no one lives in it without demolition, and it has to be demolished in many ways.
The use period of urban high-rise buildings is 70 years, which does not refer to the life span, but to pay the land use fee after 70 years, reinforced concrete.
The actual service life of the building is at least 500 years. After 500 years, there is less possibility of demolition and reconstruction, which is difficult, dangerous, expensive and construction waste.
Nowhere to put it. High-rise buildings occupy a small area, spend a huge amount of money to demolish high-rise buildings, and get a palm-sized piece of land, which is more than worth the loss. The management cost of high-rise buildings is high, the maintenance cost is high, and the use cost is high. There is a maintenance fee for the upfront maintenance fee**.
It is difficult to maintain the elevator without money in the later stage, and the biggest problem is the elevator, which is broken and has no money to repair, and the consequences are unimaginable.
Is it possible to dismantle it in the future?
This is a technical matter of a specialized nature. Dozens of high-rise buildings to be demolished is indeed a relatively difficult thing to do. This starts from the top floor of the tall building, dismantles it layer by layer, and uses a crane to lift the dismantled things from the upper floors to the ground.
When the demolition is to a certain height or a suitable height, it is then excavated with an excavator. For the steel bar on the upper floor, you can start from the roof, tear down one floor, and cut the steel bar on the first floor. The current urban village.
Demolition, use an excavator to demolish, if it is a high-rise building dozens of floors, then it cannot be demolished with an excavator.
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It is unlikely to be demolished in the future, because it is still very difficult to demolish high-rise buildings, which requires huge manpower and material resources.
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Of course, it is possible, with the use of buildings, many buildings may have quality problems and may be demolished.
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I don't think it's possible, because the skyscrapers are too high, and if they are demolished, the cost will be relatively large, and no developer would dare to kill themselves like this.
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Blasting is the best way to demolish a building. If the surrounding environment is very complex and many floors are relatively close to each other, then you can use the method of fixed-point blasting to dismantle them layer by layer, which can minimize environmental pollution and reduce the impact on the surrounding environment. Generally speaking, blasting will be accompanied by very large dust, and there are a lot of broken bricks and stones, which is easy to hurt people, so it is generally calculated first.
Those very powerful engineers will look at the engineering drawings, design the construction drawings, and then analyze the structure of the floor which are load-bearing beams and which walls are thicker, and then blast all these parts at a given point, and the whole floor will collapse. After the collapse, he will also form a pile of rubble, and then use excavators, cranes and other tools to clean up the construction debris. The blasting layer by layer minimizes environmental pollution and does not cause the floor to skew and hit the flowers and plants.
So you don't have to worry about the demolition of high-rise buildings at all, because everyone has already thought about how to demolish these houses before building high-rise buildings.
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First of all, it is necessary to make a plan, if there is no rush to build a new building, it will be arranged for workers to demolish it from top to bottom, which can reduce noise and urban pollution, but it is also very material and financial, and generally if you want to demolish the building, there must be a big project that needs to be rebuilt.
Therefore, the time is generally tight, and it is rare to dismantle layer by layer. But this method is also more environmentally friendly, because the high-rise buildings are closely arranged, and if you are not careful, you will damage the buildings next to you, and you may also injure people.
Blasting is relatively fast, and it is well planned. When blasting, it is necessary to calculate the dumping angle of the building during blasting, that is, directional blasting, and carry out good protective measures, and at the same time will evacuate the crowd and reinforce the glass of the building next to it.
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Just use the blasting method. That would allow for the demolition of tall buildings quickly, but there are also safety considerations.
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Today's blasting technology is advanced and precise. High-rise buildings, after accounting, will collapse in an instant. Don't worry, if the operation is correct, the character will not be harmed or destroyed. Our country's technology is great!
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There must be a road before the car to the mountain, the times are developing, the society is progressing, the quality of the project is now greatly improved compared with before, the life of the building has been greatly increased, even when it is necessary to demolish the old and update, the directional blasting technology will be able to complete such a task, maybe a better method will be invented at that time, you can rest assured.
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At present, the best way to demolish high-rise buildings is to use directional blasting. The high-rise buildings are reinforced concrete or steel frame structures, which are easy to design directional blasting schemes, which are safe and time-saving, and the cost is controllable.
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There are many ways to demolish, which should be based on the geographical location, the surrounding environment and the structure of the house, geological conditions and other factors, to take different demolition measures, including blasting demolition, demolition from top to bottom, etc.
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After all the people are removed, the blasting method can be quickly dismantled, which can save a lot of labor costs and achieve the goal quickly.
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Of course, after all the people are relocated, the blasting method is used, which is faster and more labor-saving.
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In the future, science and technology will be more advanced, only you can't think of it, you can't do it, let professional people do professional things! If we do our own things well, society will be able to develop to a level that we dare not imagine.
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At present, many unfinished high-rise buildings are demolished at once by directional blasting.
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It takes a long time to build a building, but if you demolish it, you can blast it in an instant.
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Recently, there are a lot of questions about this, and some people are very worried about the quality of construction in China, but normally, the life of concrete high-rise buildings can reach 100 years. Therefore, modern people do not have to worry about this problem in their lifetime. Even if you are thinking about your future generations, by that time, with the development of science and the progress of technology, with our Chinese hard work and ability, wisdom will definitely be able to solve this problem.
It's too early to tell, it feels a little far away, Soccer Team, and by that time, humanity will be able to move to other planets, or a better paradise for humanity.
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Although the blasting method of high-rise buildings seems to be hugely harmful, fast and simple, and only requires bombs and detonators, it is a very common demolition method, but in fact, it involves a lot of advanced mathematics, structural mechanics, blasting, materials, architecture, engineering, etc. It is really troublesome to demolish the floors from top to bottom, you know, the high-rise buildings are almost towering into the sky, and people dare not look down from the top, because they will really be afraid, so it is impossible to demolish the buildings with hundreds of floors layer by layer, so if you really want to demolish the high-rise buildings, it is most appropriate to make a careful blasting plan.
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If it is a large area of demolition, it is convenient, directly demolished, and a small area can only be demolished with blasting or excavator selectively pushed.
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Generally, it is fixed-point blasting, which may be costly, but it saves time, manpower and material resources, and is more trouble-free.
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If you can do it, you can demolish it, and if someone studies it, someone will study how to demolish it, all of which are money-making industries.
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Now it is demolished with directional blasting, and later there may be more advanced technology.
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There are people who are professional demolitionists, like those who study blasting, who do this.
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The floors are so high that they can only be demolished with blasting techniques.
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All blown foundations are blasted with industrial explosives.
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On the ruins of the ancient capital of Ethiopia, Africa, Aksum, there are still more than a dozen huge stone pillars in the shape of a quadrangular shape, each 35 meters high and weighing 200,300 tons, all of which are carved from a single piece of huge granite, carved with square doors and windows, layer by layer, layer by layer, looking from afar, it seems to be a modern 12 or 13-story "high-rise building". According to some archaeologists, they were carved 2,000 to 3,000 years ago. For this reason, some people jokingly refer to them as "ancient skyscrapers".
Although they look like "skyscrapers" from a distance, they are actually impossible to inhabit at all, because they are nothing more than huge stone prisms. Why did the ancients carve these stone pillars into the shape of "skyscrapers"? At that time, there were no giant cranes on the earth, let alone powerful equipment, so how did the ancients erect a 200,300-ton boulder?
It's truly amazing.
According to some historians, the earliest inhabitants of present-day northern Ethiopia were the Hammet, who were related to the ancient Egyptians and the Berbers of North Africa. The above-mentioned huge stone prism was most likely carved by the Hammites. The Hamit founded the first slave state, with its capital in the city of Axum (in present-day Tigray province).
In 975 BC, Menelik I became king. In the 8th century B.C., Axum was conquered by the Kingdom of Kushi, and it was not until around the 1st century A.D. that Axum developed into an independent country, with a very developed domestic commodity economy, and the market circulated its own minted gold, silver, and copper currency, and Egypt, India, Sri Lanka, West Asia, Greece, Rome, etc. It is speculated that they carved these huge stone prisms to show the prosperity of their own country, using them as a sign of the city's beauty.
Some scholars believe that these stone prisms are artistically interesting and exquisite, and have the characteristics of stone carving art styles in ancient India, Greece and Rome, reflecting the exchange and integration of Eastern and Western cultures and arts. According to folklore, the ancient kingdom of Axum had a miraculous skill of "boiling stones": excellent craftsmen were able to boil the stone into a molten state, then pour it into a large mold, and then cool and solidify it into a variety of beautiful stone carvings.
Some people speculate that the huge quadrangular stone pillar was made using the miraculous skill of "boiling stone casting". Did the ancients really have this kind of magical stunt? In this regard, some scholars are deeply skeptical, they believe that human beings on the earth as far away as 2000 to 3000 years ago could not have such magical skills as "boiling stones and casting", which is just a myth and legend that cannot be realized.
When, who, and how were these dozen or so huge quadrangular stone pillars, which are now nicknamed "ancient skyscrapers", carved and erected by whom? What is it used for? This is still a mystery to which no exact answer can be found.
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The building will also become a high-density building on its own, pay attention to whether there is enough space for it to expand. Click on the blue icon and see that the blue is getting deeper and deeper from the fifth floor to the building, which is traffic education; Medical; Firefighting; The police; The superposition of these 5 covered areas of the park.
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