The videos I watched became popular in ancient times

Chapter 307 The tallest building in China
The ancients of all dynasties were deeply impressed by the super projects built by later generations.

Especially for the emperors of various dynasties, this feeling is even stronger.

Only they know best how difficult every major construction project is.

But later generations did an extraordinary job and achieved a series of great achievements.

While they admired him, they also felt deeply envious.

Li Shimin knew that every super project would benefit the country and the people, and he also hoped that one day he could build super projects on the land of Datang.

However, he also knew that with Datang's current capabilities, it might not be possible in a short time.

He carefully recalled the prosperity of later generations, and suddenly felt that it was reasonable for future generations to build so many super projects.

After all, that's all he knew from the previous marquee videos or saw it through the live broadcast of the anchor.

The development of later generations has reached an extremely high level, and it is not surprising that super projects can be built.

While shocked, they couldn't help but feel a little disappointed.

"The Shanghai Tower is not only the city's highest skyline, but also my country's first skyscraper over 600 meters, and it is also my country's last skyscraper over 600 meters."

They immediately recognized that Shanghai was in their Songjiang Mansion.

"To solve this problem, we must build a solid foundation to support it, and the strength of this foundation will be unprecedented."

"For the first time, the exterior wall of the building adopts a large-scale double-layer glass curtain wall design. The two layers of glass are partitioned every ten or so floors to form 24 high and transparent sky lofts."

"It stands at a height of 632 meters in Lujiazui, Shanghai, making it the tallest building in China."

Looking at Songjiang Prefecture today and Shanghai in later generations, this sense of disparity makes them frustrated.

"Its construction area is 57 square meters, with 127 floors above ground and 5 floors underground, with a total investment of 150 billion."

What usually looks like a mediocre small fishing village turned into skyscrapers in later generations. You can imagine the shock caused by this impact.

“As early as 1993, Pudong New Area had already begun planning for a new landmark in Lujiazui.”

"The building rotates clockwise from bottom to top. Its shape is like a spiraling dragon, forming a double dragon artistic conception with the dragon-shaped reflection on the river."

"Shanghai Tower is the tallest skyscraper in my country."

"The slurry can squeeze out the sediment at the bottom of the hole from the sides and fill the gaps in the pile foundation, greatly improving the bearing capacity."

"In order to ensure the absolute safety of the building, a super-large foundation pit with a diameter of 121 meters and a depth of 33 meters was excavated, and plans were made to pour a large base plate of more than square meters and six meters thick."

"Because it is less than one kilometer away from the Huangpu River, Shanghai's unique soft geology, and the foundation is close to the river, the ultra-high floors and staggering weight will bring risks of geological subsidence and tilting of high-rise buildings."

"But no one thought that this height would be permanently fixed."

After Li Shimin's reminder, Su Chen immediately reacted.

"If you want to build an ultra-tall and overweight skyscraper on soil with this kind of characteristics, the first problem is to solve the foundation of the building."

“随后420米的金茂大厦和490米的上海环球中心大厦分别于1999年和2010年竣工，最后的上海中心大厦也于2008年动土开工。”

"Shanghai is located in the alluvial plain of the Yangtze River Delta. It has a soft soil foundation and rich groundwater. The soil is soft and wet."

"In terms of appearance design alone, the shape of the Shanghai Tower Dragon Tower is absolutely an epic masterpiece."

"Shanghai Tower's goal is not to be the tallest building in China. The Global Center to the east is 70 meters taller than the Jinmao Tower, and the Shanghai Tower is 140 meters taller than the Global Center."

Li Shimin: Anchor, I have seen many high-rise buildings in later generations. I wonder how high the tallest building is?
Compared with other super projects, he feels that the high-rise buildings of later generations have had a greater impact on him.

"How to build a load-bearing foundation on soft geology is the most difficult part of the construction project."

The height of 632 meters is breathtaking just thinking about it.

"The Shanghai Tower began construction in 2008, but the building's height of 632 meters weighs 80 tons, which is equivalent to 70 Eiffel Towers."

"But if it is poured in layers and in blocks, the strength of the concrete will be reduced and its service life will be affected."

The people who were most shocked were the people of Songjiang Prefecture from all dynasties.

"The building was designed by an American architectural firm. When viewed from a high altitude, its cross-section looks like a rounded triangle."

In the video, looking down from the top of the Shanghai Tower, you can't see the ground at all.

They also know that there will be many skyscrapers in later generations, but now they understand how incredibly tall the buildings are.

"The inherent mathematical logic and perfect skyline are the real reasons why the building is 632 meters high."

As Su Chen introduced the Shanghai Tower, he looked for relevant videos to play for everyone to watch.

"Some people say that the building is like a guitar pick, or a more vivid metaphor is that of an egg beater."

"The shape of the building is a spiraling dragon tower. It is said that it was specially designed for the Global Center."

Perhaps, in the near future, high-rise buildings will be built on the land of Datang.

Among China's large-scale infrastructure projects, skyscrapers across the country are undoubtedly the most eye-catching achievements.

"First, 955 engineering piles with a length of 86 meters were driven under the foundation, and after each pile foundation was semi-dry, high-pressure grouting was performed on the pre-embedded grouting pipe."

Ancient people from all dynasties and generations were all shocked by the skyscrapers in the video. The towering tall buildings are so spectacular that they feel insignificant just by looking at the picture.

Compared with other super projects, the construction difficulty of high-rise buildings is undoubtedly the smallest.

Especially at night, the high-rise buildings with lights and lights were even more gorgeous, which left a deep impression on him.

“So the base plate must be poured in one go to meet its strength and service life standards.”

"But there is a fatal problem with large-volume concrete pouring, which is that the concrete will react with hydration heat during pouring."

"It will cause local high temperatures in the concrete, which will eventually lead to local expansion and cracking, which will make the stability of the base plate substandard."

"To solve this problem, we need to strictly control the water reducing agent in concrete."

"This places higher requirements on the speed of concrete transportation. Workers have to complete the pouring of the entire base plate in more than 60 hours."

Li Zhi: The tallest building in the Tang Dynasty, the Big Wild Goose Pagoda, is less than 70 meters, which is very different from the Shanghai Tower.

After Xuanzang returned from collecting scriptures from the West, in order to preserve the scriptures and Buddha statues he brought back from India, he specially built a stone pagoda, the Big Wild Goose Pagoda.

Although the Big Wild Goose Pagoda is the tallest building in the Tang Dynasty, it is not even a fraction of the tallest building in later generations.

The Shanghai Tower gave him inspiration to see if it was possible to build a taller building than the Big Wild Goose Pagoda in Chang'an. Because he realized that building the tallest building not only looks spectacular, but also reflects the strength of the country.

Today, under his rule, the territory of the Tang Dynasty has reached its peak.

Moreover, the people live and work in peace and contentment, and the entire society prospers.

With such achievements, he thought it would be appropriate to build a tall building to commemorate him.

In this way, it will not only highlight his achievements, but also serve as a symbol of the prosperity of the Tang Dynasty, and greatly enhance the national pride of the people of the Tang Dynasty.

"On March 2010, 3, 26% of the mixer trucks in Shanghai transported concrete to the construction site from mixing stations across the city."

"After 63 hours of continuous pouring work, the base plate of the building was successfully poured in one go."

"At this point, the biggest problem with the building's foundation has been solved, and workers can safely and boldly start the next phase of construction on this stable platform."

"After two years of construction, the building project has exceeded plus or minus zero."

"Finally it popped up on the ground and rose upwards at a rate of one layer every three days."

"But as height increases, the danger to construction workers increases."

"At a height of several hundred meters, a normal person's legs would feel weak just standing, let alone working."

"At this time, my country's independently developed aerial building construction machine has solved all problems. The steel platform and two-meter-high guardrails provide workers with a safe and stable construction site."

"And after the construction of the first floor was completed, the engineers used the horn brackets to serve as the two hands and feet of the steel platform, and used the repaired outer wall to lift it up."

"While the building was climbing rapidly, another problem also came one after another."

"As the height continues to increase, construction becomes more and more intense."

"The most difficult part is the crane on the roof of the building, which is close to 700 meters in the sky."

"The car on the ground is like a moving light spot in the eyes of the driver. When lifting steel, it must be completed with the cooperation of the ground command."

"But in foggy weather, the driver needs to carry out blind lifting."

"The fear of heights, the increased difficulty of construction, and the long hours of lonely work all demonstrate the great dedication of our country's infrastructure workers."

"In addition to construction difficulties, the impact of wind flow on the building is also increasing."

"However, the spiraling shape and the design of each layer twisting by one degree reflect its brilliance."

Su Shi: The construction of the Leifeng Pagoda by the West Lake was quite difficult, not to mention how difficult it was to build the Shanghai Tower.

Not to mention other things, it took two years to build the foundation alone. You can imagine how difficult it was.

But even under such difficulties, future generations succeeded in the end, which is a bit incredible when you think about it.

The Leifeng Pagoda in Hangzhou was built by the concubine of Wu Yue to pray for peace during the Five Dynasties and Ten Kingdoms period.

It is said that it took six years to build Leifeng Pagoda, and the manpower, material and financial resources involved were unimaginable.

Eventually, the built Leifeng Pagoda became a major scenic spot in Hangzhou.

He has visited Leifeng Pagoda. As the tallest tower in the country, it was really shocking to see at the time.

But now with the strong contrast of Shanghai Tower, he suddenly felt that Leifeng Tower was just average and no big deal.

"The spiral shape can well delay the shedding of vortices generated when the wind surrounds the building."

"The vortex shedding effect simply means that when the wind blows through the building, it will create vortices on both sides of the back."

"When its frequency is the same as the natural frequency of the building, resonance will occur, causing the building to swing violently."

"The size and frequency of vortex shedding are related to the shape of the building."

"The spiral twisting and rising design of the Shanghai Tower makes the frequency of vortex shedding at each height different, making it difficult to produce resonance."

"Not only that, the 126th floor of the building is also equipped with a 1000-ton damper independently developed by my country, Shanghai Huiyan, which is also the largest damper in the world."

"When the building is affected by wind currents, the resistors will generate reaction forces, allowing the building to remain stable during typhoons."

"To make the building a green and environmentally friendly classic, the Shanghai Tower's exterior uses a double-layer curtain wall system, just like the liner of a hot water kettle."

"The distance between the double-layer curtain wall effectively avoids the direct exchange of indoor and outdoor temperatures, saving 50% of energy consumption compared with a single-layer curtain wall."

"In addition to this, the building's crown is designed as a rainwater collector, which collects rainwater to provide water for the building."

"And three sets of wind turbines are installed in the wind tunnel on the top of the building."

"Using the wind power at an altitude of 600 meters, we provide lighting and electricity for the building."

"Shanghai Tower has designed a total of 19 energy-saving technologies, which can save 25% of energy consumption every year."

“In 2015, this urban complex integrating offices, entertainment, and shopping was finally officially completed.”

"It has the fastest elevator in the world, which can transport guests to the top of Shanghai on the 18th floor in less than one minute at a speed of 119 meters per second."

"To record all the workers and units involved in the construction, the Shanghai Tower has engraved the names of 60 units and 500 builders on a 4021-meter-long glazed honor wall."

Originally, ancient people from all dynasties and generations were still shocked by the majesty of the Shanghai Tower when they heard the last words spoken by the anchor.

Everyone was stunned, their expressions were a little complicated, and they didn't know what to say for a moment.

They were moved by the idea of ​​erecting a wall of honor in the Shanghai Tower and engraving the names of all construction workers on the wall.

In their view, the Shanghai Tower is the tallest building and it is not an exaggeration to say it is a symbol of the country.

Construction workers are just ordinary people, so naturally they are not qualified to appear on the wall of honor.

Just like their dynasty built a magnificent palace, this honor does not belong to those craftsmen.

However, future generations have not forgotten the contributions of ordinary workers, and have forever engraved the names of these workers on the honor wall of Shanghai Tower. This approach far exceeded their expectations.

Until this moment, they seemed to understand something that had troubled them before.

Later generations built one super project after another, and they still wondered how they could create such miracles.

Now seeing how future generations treat construction workers, they feel they have found the answer.

With so much respect from even ordinary construction workers, it’s no wonder these great achievements have been achieved.

(End of this chapter)