Text: Enthusiastic little dance
Editor: Enthusiastic Xiao Wu
Preamble:
As part of the major national transportation strategy, the Shenzhen-Zhongshan Corridor has attracted much attention since its construction, and almost every aspect of its construction represents the highest standard of domestic and international transportation engineering construction level.
After a construction period of 7 years, a huge investment of nearly 10 billion yuan, and with the efforts of countless engineers and scientific researchers day and night to tackle key problems and innovate, now, this cross-sea project integrating bridges, islands and tunnels has finally been officially opened to traffic in the expectations of the people of the whole country, and has become a new "gateway" connecting the two cities in Shenzhen and China.
In the face of the ever-changing scientific and technological changes in today's world, the technical and engineering problems involved in transportation construction are actually unprecedented, and every new project starts to mean a technological revolution one after another, which can be successfully completed, and is the result of the joint efforts of countless experts, scholars and scientific research teams.
The smooth opening of the Shenzhen-Zhongshan Corridor not only makes the transportation interconnection between the two cities a reality, but also provides people all over the country with an unparalleled travel experience.
1. Super-large span steel box girder suspension bridge - Shenzhong Bridge
When it comes to the interchange "link" connecting Shenzhen and China, the first to bear the brunt is the Shenzhen-Zhongshan Bridge. Viewed from the air, the bridge is like a majestic dragon, lying horizontally on the Lingding Ocean, guarding the entire Shenzhong Passage, providing a solid travel guarantee for passing vehicles.
It is well known that the actual construction of such a large sea-crossing project on a busy waterway is simply more difficult.
In order not to affect the normal navigation of Guangzhou Port, the main bridge of the Shenzhong Bridge adopts the "full offshore" design scheme, and it is a "stumbling block" in terms of navigation clear height, which directly refreshes the precedent of the global navigation project - a unique 76.5 meters, which is about 10 meters higher than the bridge of the world's main shipping channel.
With such a high bridge deck, the ability to resist tides and strong winds naturally has extremely high requirements, and in this regard, the Shenzhong Bridge is not ambiguous, the engineers have successfully improved the flutter critical wind speed of the overall steel box girder suspension bridge with their own wisdom and scientific research results, reaching an astonishing 88 m/s, enough to cope with the typhoon attack of 17 magnitude.
In order to achieve this standard, they have paid almost all their efforts and sweat, and conducted more than 3 years of global parallel research, and in the end, this technology was conquered by Chinese engineers and became the first in China, which undoubtedly accumulated extremely valuable experience and technical reserves for the mainland in the future construction of cross-sea projects.
In addition, in the construction process of the Shenzhong Bridge, there are many ingenious design schemes, such as the diamond-shaped anchor structure, the super-large diameter of the main cable strand, all of which represent the super wisdom behind the super project.
It also allows us to understand more deeply that the reason why Made in China can go to the world is that the key lies in our adherence to and overcoming the core technology, not afraid of loneliness, not afraid of loneliness, as long as there is a dream, there will be a day to realize it.
2. The widest undersea tunnel - Shenzhong Passage
In addition to the Shenzhong Bridge, the construction of the Shenzhen-Zhongshan Passage has also brought us another engineering miracle that has attracted worldwide attention - the undersea tunnel. In the design of the entire channel, the undersea tunnel is divided into two parts, namely the southbound tunnel and the northbound tunnel, and no matter which tunnel, it is this unprecedented scientific and technological achievement - immersed tunnel that plays a key role.
Compared with the traditional shield tunnel, the immersed tunnel is undoubtedly more suitable for the construction environment of the seabed, and in the design of the deep channel, such a tunnel has also refreshed a number of world bests, whether in length, width, or ventilation and fire extinguishing system inside the tunnel, it has reached the international first-class level.
In order to accurately install the immersed tube weighing 80,000 tons to the predetermined position of the seabed, the engineering team also specially developed an "integrated ship".
At the same time, in the process of installing the immersed tube, the technology of the Beidou satellite is introduced, and the absolute accuracy of the immersed tube is finally ensured through millimeter-level differential positioning.
In addition, in the internal design of the tunnel, there are many intelligent devices, such as "5G" communication system, intelligent inspection robots, and the use of these devices not only greatly improves the reliability and safety of the tunnel's internal facilities.
It also brings more convenience to people's travel, and even plays an important role in the handling of accidents, providing a more comprehensive guarantee for people's life safety.
3. The crystallization of science and technology and wisdom - West Artificial Island
If the Shenzhong Bridge and the undersea tunnel are only the "visible" part of the connection project, then in order to truly connect the two cities together, it is necessary to have a flexible conversion platform, and in the design of the entire Shenzhen-Zhongshan Corridor, the West Artificial Island plays such an important role.
From the beginning of the design, the construction of the west artificial island has attracted attention from all walks of life, after all, it is "made out of nothing" at sea, and it must be quickly prototyped in a short period of time, whether it is the selection of building materials or the design of the construction process.
In the process of building the entire island, the engineering team refreshed the "speed and passion" again and again, and finally successfully created a world record of four and a half months to quickly become an island.
Today's West Artificial Island has not only become the "transfer station" of the Shenzhen-Zhongshan Passage, but also has many ingenious designs, such as light-reducing tapes, middle pipe corridors, etc., the integration of these designs not only makes the island more ornamental, but also brings a better travel experience for passing vehicles and tourists.
The engineers and scientific research team who are silently contributing behind the scenes, it is this kind of craftsmanship spirit and innovative consciousness that dares to be the first, so that there is the "spirit" and "confidence" of Made in China, and it also makes us full of more expectations and confidence in the future development of science and technology.
Fourth, the dream of a strong transportation country starts from the "Chinese standard".
Undoubtedly, in this "grand opening ceremony", the completion of the Shenzhen-Zhongshan Corridor has given people all over the country great shock and pride, and also set the best example for our "dream of a strong transportation country".
It can be seen from the construction process of the Shenzhong Passage that whether it is the design of the super-large sea-crossing bridge or the construction of the widest undersea tunnel, every technical and engineering problem needs to be overcome by ourselves, and we also need to adhere to the core technology, so as to finally realize the gorgeous turn from "Chinese standard" to "world standard".
Of course, behind this, it is inseparable from countless scientific researchers, engineers, and infinite silent contributions, they may be alone on the "lonely road", or they may feel endless sadness in the "ethereal sky", but it is with their efforts that there is a "no regret choice" made in China, and there is a "peerless elegance" of our country.
In the face of future challenges and opportunities, we should also be like them, with dreams, brave forward, no matter what the road is, we must remember that "life has its own way of life", I believe that as long as we persevere, our dreams will come true one day, and such a realization will definitely make the world amazed and moved.
Fifth, it is difficult to travel, it is even more difficult to insist, and the dream of building a strong country in transportation starts with everyone
Finally, the successful opening of the Shenzhen-Zhongshan Corridor has also put forward more profound thinking for us, as a part of the transportation power, everyone is the creator and witness of this dream, and it is also the best platform for the dream to set sail.
When we are on the road of difficulty, we may encounter unprecedented challenges and difficulties, but it is precisely with such difficulties that our "wisdom" and "courage" are more needed.
No matter what kind of work you are engaged in, you must have the persistence of your dreams and your love for your career, only in this way can you truly turn the "Chinese dream" into reality, and also make our life and work full of infinite hope and possibilities. ”