If it is said that more than 370 mountains can be flattened directly, and only relying on the ancient Yugong to move the mountains, I am afraid that it will not be possible for 10,000 years. However, China's current infrastructure power has used 9,000 tons of explosives to perfectly solve this problem.

In the early development, China had flaws in both construction and the development of some technologies. With the continuous advancement of technology and the times, we have also made progress in this area, and even created more Advantage. The development of China's high-speed rail has also enhanced another part of its development strength, that is, in some applications of infrastructure projects, so how strong is China's infrastructure?

China's Sichuan is a relatively well-known basin, and the world-famous Tianfu International Airport is located on a land of 486,000 square kilometers in Sichuan. In order to build a super project, China directly used 9,000 tons of explosives, flattened 370 mountains, and built the world-famous Chengdu Tianfu International Airport. Chengdu Tianfu International Airport is a great project born in a great era. It is the largest civil airport project built so far. This airport supports a new power source for the development and opening up of Sichuan and even the western region. Unique, the investment in this airport has reached 75 billion, which is also unprecedented.

On May 27, 2016, when the groundbreaking ceremony of Chengdu Tianfu International Airport in Sichuan was held in a hill, the residents of the town ran around to tell the story and surrounded the ceremony site. "An airport is built in front of the house!" "When the new airport is built, there will be two big airports in Chengdu!" The exciting news flew out from Lujia Town, Jianyang City, 50 kilometers away from the main city of Chengdu. A seed about flying is planted in people's hearts.

In the past five years, along with the melody of collision between machines and earth and stones, along with the sparks of technology and wisdom, a modern airport integrating safety, greenness, wisdom and humanity has been erected in the Sichuan Basin, standing proudly. Today, it quietly traverses the southeast of Chengdu, like a divine bird taking off day by day, fluttering its wings. For more than 1,800 days and nights, the builders of Tianfu Airport worked hard and worked hard. While experiencing the test of the sudden epidemic, they raced against time; while they used their sweat and wisdom to create a monument in the history of civil aviation airport construction. On December 18, 2019, the steel structure of the T2 terminal building of Chengdu Tianfu International Airport was capped.

The construction of Tianfu International Airport, this airport presents a curved T-shape from the air. This shape is actually taken from the sun bird pattern in Chengdu, which means that the ancient Shu civilization has experienced more than 3,000 years of inheritance on the land of Chengdu. Chengdu New Airport Fair Taking off to the world with a high attitude, this is the leveling of the site and runway obtained by blasting the top of the mountain with 9,000 tons of explosives. Such a huge project can only be done by Chinese infrastructure.

Civil aviation infrastructure corner overtaking

The Tianfu International Airport site is a typical shallow hills and wide valleys landform, the junction of filling and excavation is intertwined, the foundation treatment methods are complicated, and the thickness of filling and excavation varies greatly. The ground treatment and earthwork filling of the whole site mainly adopt 5 kinds of construction methods: gravel pile, CFG pile, dynamic compaction, impact rolling, and vibration rolling. During the construction period, the amount of earth and stone was as high as 180 million cubic meters, and the operating area was equivalent to 2 Chengdu Shuangliu Airport. In order to ensure the quality of the project, Tianfu Airport introduced a digital construction quality monitoring system, which changed the traditional manual construction management into digital management, and achieved the effect of full coverage, visualization and real-time monitoring.

Taking gravel piles as an example, after the introduction of the digital construction quality monitoring system, the gravel pile monitoring equipment will input data into the monitoring platform in real time. The staff can see the specific position of the construction machinery from the system, and monitor the construction data such as the depth of the pile, the coordinates of the pile point, the number of reverse insertions, the time of the pile formation, and the current value of the bearing layer in real time. At the same time, it can also query according to different needs, analyze and process the collected data information, provide real-time project quality reports to the construction unit, and increase supervision.

In fact, the digital construction quality monitoring platform of airport engineering is the first digital construction quality monitoring platform based on cloud GIS in China. The progress of the project; the video system monitors the construction of key parts and dangerous parts of the project in real time around the clock and other important sections.

Dr. Chen Fengchen, senior engineer of the scientific research base of China Civil Aviation Airport Construction Group Corporation, once proudly said: "Looking at the field of transportation construction, whether it is railways or highways, digital construction has applications. However, from the perspective of construction methods and scale, all the machinery used in the field is used. It is the first time to carry out such a large-scale digital construction. It can be said that civil aviation has achieved corner overtaking in the field of digital construction of infrastructure.”

Smartly build a comprehensive transportation hub

In order to facilitate the travel of passengers, Tianfu International Airport has simultaneously introduced high-speed rail, subway and other rail transportation systems into the transportation center at the beginning of the planning. In this way, Tianfu Airport has naturally become a comprehensive transportation hub integrating aviation, rail and ground transportation. However, since the railway runs across the airport from east to west, and the subway runs through the site from north to south, the runway and terminal building are always faced with cross construction during the construction process.

According to the staff, the Chengdu-Zigong high-speed rail line, located on the second underground floor of the terminal area, has a design speed of 350 kilometers per hour and a maximum burial depth of about 25 meters. It is the world's first high-speed railway with a speed of 350 kilometers per hour that directly passes through the airport terminal. However, the distance of the high-speed rail tunnel crossing Terminal 2 is as long as 464 meters, affecting one-third of the construction area and a corridor of the entire hall of Terminal 2.

As the center of the operation of the terminal building, the lobby of Terminal 2 has a large engineering volume and many engineering tasks. Under the enormous pressure of the construction period, the construction personnel adjusted the construction sequence scientifically, until the construction of the main structure of the high-speed railway tunnel was completed, and then the construction of the terminal building foundation and upper main structure within the crossing range was carried out. At the same time, in order to ensure the safety and stability of the terminal hall, the average thickness of the arched concrete roof at the top of the high-speed rail tunnel is designed to exceed 3 meters, and the pouring quality and construction safety of mass concrete are more critical. In order to reduce the impact of vibration on the building structure when the high-speed rail passes through, the top of the tunnel is connected to Terminal 2 through 690 vibration-damping foundations.

Not only that, Tianfu International Airport also applied BIM technology in the whole process of construction of the terminal area. Through the introduction of BIM technology, the airport creates and integrates various professional models, and conducts comprehensive professional in-depth design. Finally, through the application of new models such as clear height control, baggage system pipeline construction, and pipeline prefabrication, the purpose of saving construction time and improving quality has been achieved. The first major breakthrough in the full life cycle and full professional in-depth application of BIM technology in the construction of large airports.

Create a new business card for Sichuan

When it comes to Sichuan, people will think of giant pandas, Dujiangyan, and Sichuan-style delicacies. Now Sichuan has a new business card. It is Tianfu International Airport. Why build a new airport? Can the original airport be expanded? In fact, the construction of the new airport is also to adapt to a major event to be planned by Sichuan Province in the future. It is related to the expansion of air passages in the entire Sichuan Basin. Therefore, a new airport must be built. Chengdu Tianfu International Airport will be officially opened on June 27, 2021. It is expected to In 2025, Tianfu Airport will have 40 million passengers per year.

Tianfu International Airport is located between the cities of Chengdu and Chongqing. Today, the twin-city economic circle in the Chengdu-Chongqing region has become a national strategy. The two cities, Chengdu and Chongqing, are both facing important nodes of industrial transformation and upgrading in the process of rapid development. The pressure and demand for air cargo and passenger transport are also constant increase. By 2050, the annual passenger throughput of Chengdu International Aviation Hub will reach 200 million.

Cao Yunchun, a professor at the Civil Aviation University of China and director of the Airport Economic Research Center of the Civil Aviation University of China, said that Tianfu Airport, as a super-large comprehensive transportation hub integrating various transportation modes, will be the biggest highlight of the development of civil aviation in Southwest China in the next 10 years. The effect will gradually appear in the future.

The completion and operation of Tianfu Airport will promote the construction of urban airport clusters in China, and is of great significance for improving the regional transportation network. Tianfu Airport is located in the new eastern district of Chengdu, with Chengdu to the east and Chongqing to the west, with huge regional resource advantages. From this point of view, with Tianfu International Airport as an important fulcrum, the Chengdu-Chongqing Shuangcheng Economic Circle will usher in a higher-level era of speed economy. After the airport is put into operation, it will surely become a new source of power to lead the opening and development of Sichuan.

After the completion of Tianfu Airport, Chengdu will become the third city in mainland China to have two international hub airports after Shanghai and Beijing. This means that Chengdu will play a greater role in China's next development. After Tianfu Airport is completed and put into use, it will not only provide a new power source for the logistics industry and tourism industry in Chengdu, but also drive the manufacturing industry, especially the high-end manufacturing industry, to gather in the eastward area of Chengdu. This will also have a more obvious driving effect on the eastern part of Chengdu. The operation of this airport will enable Chengdu to realize its dream of moving from two mountains to one city to one mountain and two wings, laying a solid foundation for Chengdu to expand its urban development space on the basis of breaking through the geographical bottleneck.

The reason why China's infrastructure level is called a madman is because many projects seem to be out of manpower, and even the natural environment is extremely harsh, which is not suitable for construction. China's construction projects still need to make the impossible possible. He was even able to hand over the completion answer sheets of high-quality projects, which shocked the world, and even felt that China has always had a crazy enthusiasm for infrastructure projects. Editor/Zhao E