Chapter 552: City of Stars

The real estate project of Xingchen Technology in Yangpu District was officially announced, the exhibition center was full of guests, Luo Jia did a simple warm-up, and after successfully arousing everyone's appetite, he pushed open the door of the next hall in the eyes of the crowd, and presented the whole project in front of everyone.

In the next hall, there is a 3D printed model of the project, although it is only a model, but it still brings a huge shock to everyone, a tower like Optimus Prime straight into the sky, built at different heights of several air bus stations, indicating that it has a ground-air integrated super transportation system.

In addition, the building materials were also surprising to the experts present, as it seems that the building is not load-bearing with reinforced concrete, but uses a composite building material that is close to transparent, and is piled directly on the foundation like building blocks.

Of course, the biggest shock to people is the height of the building.

The city of Shanghai has always been known for its high-rise buildings, but the three major building complexes of Xingchen Technology, like a city in the sky, are high above the entire city, including Lujiazui, which has the most super buildings.

"What the hell is this!?"

"Not to mention Universal and Jinmao, this height is at least twice the height of the Burj Khalifa!"

"Such a huge single building should be able to accommodate a lot of residents."

"Crazy, Xingchen Technology is completely crazy!"

"I think it's good that the height is used to increase the floor area ratio, and the area of green space around it has increased significantly, and there are even trees and streams."

"If this kind of super community can really be built, I would be very willing to move in."

"Then you also need to be able to afford it, or pay the rent, although it is in Yangpu District, but a super skyscraper like this, the price will definitely not be cheap."

People are all shocked by the magnificence of the three major building complexes, the advanced design, the crazy height of the buildings, give them a sense of standing out from the crowd, compared to the surrounding buildings, these three buildings are like from a science fiction movie, the design and materials are far beyond their contemporaries.

"That's our answer." Luo Jia said in a deep voice: "Since the land in the city is limited, then use the building height to make up for it, and now the design you see is called the City of Stars, each City of Stars is composed of twelve super high-rise residential buildings, with a single height of 1,858 meters, a total of 420 floors, accommodating 80,000 residents and 160 elevators. ”

"The City of Stars has a total population of nearly one million, and in addition to residential areas, in the part close to the ground, there are also large commercial areas, restaurants, large supermarkets, schools, kindergartens, gyms, hospitals."

"In short, all the living facilities that everyone can imagine can be found in the City of Stars, providing a full range of services for the people who live here..."

Luo Jia talked eloquently, to put it simply, the city of stars is a work of great miracles, in the city, land is scarce, as a latecomer in the industry, there is not enough development land in the hands of Xingchen Technology, in this case, the rational use of resources, to build the floor as high as possible, it has become their only choice.

In fact, in human history, or in those visionary science fiction, there is no shortage of ideas like megacities, as the population increases, cities will become larger and more crowded, and high-rise buildings are almost the only option to increase the urban floor area ratio in the future.

"I know that you must have a lot of questions to know about the City of Stars." After Luo Jia's brief introduction, he glanced at the audience, and said to everyone with a smile: "Any questions related to the City of Stars, any speculation and questioning, you can ask questions, if you are ready, let's start now, students who want to ask questions, please raise your right hand." ”

As soon as Luo Jia's voice fell, there was a smack, countless arms were raised on the scene, and there were so many people who wanted to ask questions, and in the absence of an outline, allowing the media to ask questions freely was undoubtedly a test for Luo Jia, because no one knew what tricky questions people would ask.

"I would like to ask, is the height of the building really 1,836 meters? How do you decide on the height of the building? Don't you worry about the lack of oxygen and the low temperature in high-rise housing? After being named by Luo Jia, a young man with glasses stood up and asked.

"That's not one problem, it's several." Luo Jia said with a smile: "The altitude of Kunming is 1,891 meters, I have never heard the people of Kunming complain about the lack of oxygen, the altitude line of altitude sickness is 2,500 meters, so even if you live on the top floor of the City of Stars, it is safe." ”

"As for the height of the building, believe me, that is the most irrelevant issue, since the Jeddah Kingdom Tower can be built to 1,007 meters, and the Burj Khalifa in Dubai can be built to 828 meters, why can't we build higher in China?"

"At that time, I asked my colleagues how high the City of Stars should be, some said 1,200 meters, some said 1,500 meters, but in the end, we were careless and designed 1,836 meters."

"What does 1,836 meters mean?"

"It doesn't mean anything special, the world's tallest building, the Kingdom Tower of Jeddah, plus the world's second tallest building, the Burj Khalifa, totaling 1,835 meters, and our City of Stars is 1,836 meters, which means that it is one meter taller than them combined."

Puff~

As soon as Luo Jia's voice fell, the scene was already bursting with laughter.

"Awesome! One meter taller than the world number one and world number two combined? Xingchen Technology is awesome! ”

"Well done! I like to watch the scene of the tough guy Tiantuan bursting with the combat power of others, 1,836 meters, the big dog is dumbfounded this time! ”

"A careless design of 1,836 meters? My God, how careless these straight men are at Xingchen Technology! ”

"Let's see who the sky has spared, the big dog will never think that they have today!"

The crowd was talking, and a strong sense of pride arose.

Most of the Chinese people have no good impression of the big dogs, as a typical example of unearned gains, discriminating against women, thousands of princes are all kinds of corrupt and all kinds of things, they are completely the slavery style of the ancient clans and tribes, and they do not belong to the modern country at all.

The crude oil business has been suppressed by Xingchen Technology, and in recent years, the big dogs have had a hard time, and they are going to go back to the desert to herd camels, so they will simply use the family's savings to engage in tourism and sell real estate.

But there is a fart tourism resource in a barren land like the desert, and the only way is to build it yourself, give full play to the talent of the big dog family, how to come to luxury, how to attract attention.

People may not know that the famous desert pearl Dubai, in fact, has long been out of crude oil, its economic pillar is tourism and real estate, plus a part of the entrepot trade, we are familiar with the Burj Khalifa, the six-star Burj Al Arab, the splendid shopping center, in fact, are all gimmicks in Dubai, used to attract tourists, otherwise no one will run to the desert to travel with neurosis, if the desert is suitable for the development of tourism, the Sahara Desert has long been lifted out of poverty.

The City of Stars was born, and the blow to the big dogs who are transforming to tourism and real estate is too big, you know, each City of Stars is composed of twelve 1,836-meter huge buildings, and in Yangpu alone, Xingchen Technology will build three Star Cities, those Jeddah Kingdom Tower, Burj Khalifa, and the City of Stars together, it is not enough to see.

"How bold are you, 1,836 meters? Millions of inhabitants? Has such a super building been scientifically demonstrated? In case of any accidents, can you Xingchen Technology take responsibility!? ”

At this time, there was a fierce question from the crowd, Luo Jia frowned slightly, followed the sound and looked over, only to see that it was a group of real estate bigwigs around Boss Yang, their faces were blue at the moment, holding their arms, and they looked like they couldn't swallow Luo Jia alive.

If the City of Stars project can really be completed, the current real estate enterprises will inevitably face huge difficulties, in Yangpu District three not too big land, resettle 3 million residents, such a terrifying plot ratio, will greatly dilute the land price.

As we all know, the largest part of the housing price in Shanghai is land, which can be called an inch of land, the floor is high, the land price is low, don't look at the city of stars as if traveling from the future, the appearance is extremely shocking, but the city of stars and the same area of ordinary real estate, who has a lower cost, it is not easy to say, if the cost of the city of stars is 30% lower than other real estate developers, it will establish a crushing level of commercial advantages.

Facing the doubts of real estate developers, Luo Jia smiled, "Only talking about the height of the building and not talking about the building materials, it is simply a hooligan, the so-called safety depends on the level of science and technology, the level of science and technology is low, no matter how low the height of the building is, it is also dangerous to have a high level of technology, and it is safe for the height of the building to penetrate the sky!" ”

"If you don't believe me, you can take a look at our elevator No. 1, which is 36,000 kilometers high and goes straight to the synchronous orbit from the surface!"

After a pause, Luo Jia said to those real estate tycoons at a fast speed: "Assuming that the bosses have learned the mechanics of materials, they will know that if the cross-sectional area of the building is A, the compressive strength is σ, and the heaviness is γ, when the height reaches h, the volume of all tree trunks is the area multiplied by the height, and the weight of the whole building is the volume multiplied by the gravity." ”

"Since the bottom of the building is subject to full gravity, we multiply the compressive strength by the area to get the expression for the ultimate limit state, h=σγ."

"Take the common reinforced concrete as an example, C30 concrete has a nominal strength of 30 megapascals, and the heaviness is about 25,000 N per cubic meter, so its theoretical limit height is 1,200 meters, and once it exceeds this height, the building will be crushed by its own weight."

"And the strength of titanium alloy is about 900 megapascals, and the weight is 44 kilonewtons per cubic meter, assuming that we use titanium alloy to make buildings, its theoretical limit height is 20,454.545 meters."

"It should be noted that the strength of titanium alloy is 3 times that of steel, and the heaviness is only half of that of steel, so the ultimate construction height of titanium alloy is 6 times that of steel, which is what we call light weight and high strength of structural performance."

"Lightweight and high strength is one of the most important theories in material mechanics and architecture, and our graphene and carbon fiber are typical lightweight and high-strength perfect materials. 1,800 meters is just pediatrics for us. ”

It's too much of a bully!

The real estate bosses were dumbfounded, their faces were extremely ugly, Luo Jia was from a technical background, and these bosses from real estate, they knew the material mechanics of a fart,

"Any other questions?" Luo Jia looked around with a smile on her face.

The City of Stars is the result of the miracles of the straight men of science and technology, and as for why he is obsessed with transforming the big city, it is mainly to cooperate with the actions of the national team.

In December 2019, the country officially established the development plan with large cities as the core, tilting resources to large cities and regional central cities, assuming that you live in the core cities at the moment, then you are lucky, because in the next few decades, you will enjoy more fruits of economic development, and if you live in small and medium-sized cities and villages now, then you may consider moving to the central cities, after all, people in this life, or pay attention to the trend.

It's like if you choose a major in college, you are told that the 21st century is the century of computers and the century of information, but you choose to study civil engineering, then you go to the construction site to move bricks after graduation, but you can't complain about others.