Take the high -speed rail to see the sea!my country's first cross -sea high -speed rail is coming

High -speed rail, a beautiful Chinese traffic business card. The high -speed railway routes of the four -way Dada have greatly pulled people's flowing speeds. However, the walking through the impression always seems to be associated with solid land.

Have you ever thought about, can you also get up to the railway that supports the Damo high -speed rail?

On the morning of August 30th, at the construction site of Xiamen North Station, Xinfuxia Railway, with the successful layout of the last set of 500 meters long rails, my country's first cross -sea high -speed rail -Xinfu (State) Xiamen (Gate) Railway Lauret was connected throughout the line. Essence

The world's highest -speed cross -sea railway has crossed the three bays of Meizhou Bay, Quanzhou Bay, and Anhai Bay. With the fighting spirit of "Guan Guan Sadly Guan Guan", it reflects the spirit of the Chinese railway "every mountain open the road, encountering water to bridge".

my country's first cross -sea high -speed rail -Fuxia high -speed rail. Drawing

The problem of breaking through the problem, the high -speed rail realizes "non -deceleration cross -sea"

The Fuxia high -speed rail is the first truly marine service environment in my country. The design speed is 350 kilometers per hour. It is expected that it takes 98 seconds to take a train after opening to traffic in 2023 to cross the sea. Fuzhou and Xiamen will realize the "one -hour life circle", and Xiamen, Quanzhou, and Zhangzhou Fujian's "Golden Triangle" will form a "half -hour traffic circle".

A brand -new Chinese high -speed rail -crossing era will also come.

In this cross -sea -cross -sea railway construction, it not only has the problem of complex hydrological environment at sea and high risk factor, but also has a very difficult construction location in three difficulties in Meizhou Bay, Quanzhou Bay, and Anhai Bay.

Hengdao immediately, who dares to break through the barrier?

Difficulties can't fall down on Chinese railways. On August 4, the last place of the "three major difficulties" of the Fuxia high -speed rail -Anhai Bay Bridge completed the construction of no orbit. The Anhai Bay Bridge, designed by the Fourth Court of China Railway and the China Railway Construction Bridge, is one of the control projects of the Fuxia High -speed Railway.

The completion of this project is not only the "sealing box" of the Fuxia high -speed rail cross -sea bridge, but also the "big crossing" of the world's no -rail -orbital bridge. In the process of the construction of my country's high -speed rail, for the first time, it has achieved no rail paving on the cross -sea cable bridge. After the entire project is completed and puts, the goal of high -speed rail cross -sea will be achieved.

What does "no orbit" mean? High -speed rail rails are divided into two forms: "道" and "no" orbit. In contrast, the flatness of no orbit is higher and stability is stronger, and there is no deceleration and "as if the ground" is not required through the orbit. However, due to technical bottlenecks, most of the large -scale high -speed rail bridges in China are mostly rails.

How to achieve such a difficult technology in a difficult environment? It is understood that the main beam of the bridge uses effective aerodynamic measures to reduce the vibration of the wind. And install a variety of sensors in the main bridge section, monitor the bridge deformation data at different temperatures and periods, and use the "relative high" measurement data for no orbital constructing. Measurement problem.

The laying of the track is only the first step. The horizontal shaking and vortex phenomenon of the sea breeze and the ruthless corrosion of the sea water are long tests.

Under difficulties, heavy weapons were born. The builder adopts the domestic damper "wind resistance to maintain stability". On each cable cable on the main bridge of the bridge, a external damping device and two internal damping device are set up. The damping device can offset the vibration and ensure the stability of the cable cable. At the same time, the damping device is also installed in the lower part of the main bridge steel beam to resist the rapid large displacement caused by the earthquake.

In order to ensure the long -term life of the bridge, the Sota steel anchor beam and support of the Fuxia high -speed railway Anwan cross -sea bridge use the marine atmospheric corrosion steel, which can prevent the penetration of chloride ions in the seawater and achieve the length of "rust rust". Effective anticorrosion effect fills the gap in my country's steel species.

Fuxia High -speed Railway An Bay Bridge Heilong scene. Iron Courtyard Conferry Confusion

"One bridge and one strategy", the "Bridge Museum" has its own style

"Fuxia high -speed rail is a bridge museum. We encountered various complex bridge types." Wang Dezhi, the engineer of the Fourth Courtyard of China Railway Council, said that the three cross -sea bridges of the Fuxia high -speed rail high -speed railway have their own style. Quanzhou Bay cross -sea bridge.

In July 2021, the Quanzhou Bay Bridge of Helong was 20.3 kilometers in length and the main span of 400 meters. It is not only the first domestic high -speed railway bridge in China, but also the world's first large span -cross -sea cable -catching railway bridge with a speed of more than 300 kilometers per hour.

The Quanzhou Bay Railway Bridge is next to a built road bridge. The nearest distance between the two bridges is only 28.7 meters. The new bridge should try to arrange the holes with the old bridge as much as possible to make the water flow smoothly and reduce wind interference, and it is also more beautiful. Therefore, many conventional design needs to break through. For example, for the first time on the domestic railway bridge, the overall bridgeless bridge is used, and the main bridge of the railway bridge has selected a 400 -meter "large cross" structure.

In addition, the Quanzhou Bay Cross -sea Bridge leads a double -block without orbit. The main bridge of the navigation hole uses the polyurethane curricher bridge at home and abroad. Shi Daoyu splashing at -endangering train safety. There is a "stunning" that runs out of the uncle to ensure that the high -speed rail can pass through the bridge for 90 seconds.

The Meizhou Bay Cross -Sea Bridge is the first domestic high -speed rail -high tower cable bridge in China. "Thousands of tons" mobile molds are launched here, and the 40.6 -meter large -span mobile modulus rack is first applied in high -speed rail construction.

The "Kunlun" 1,000 -ton -level transport frame all over the Meizhou Bay Cross -Sea Bridge is the highest technological content, the most functions, and the most widely used high -speed rail beams in my country. 50 degrees environmental construction operations, the operating status can withstand the maximum wind power of 7, and the non -operating status can withstand the maximum wind power of 11 levels. The bridge is integrated with beams, beams, and beams, and the degree of intelligence is high. R & D personnel are equipped with the laser matrix sensing system for the equipment. By scanning the surrounding environment data, it can realize the automatic driving in the tunnel and automatically correction when walking. It is the "all -around equipment" in the field of high -speed rail bridge machine.

"From the cross -river bridge to the cross -sea bridge, the high -speed rail bridge has already broken through the river and sea barrier." Wang Dezhi introduced that the breakthrough of the Fuxia high -speed rail on the cross -sea bridge is not only moved from land to the sea from land to the sea, nor is it not only The leap from the railway bridge from the river to the sea, it also represents the leap in the quality of my country's railway bridge, which has an important role in promoting the future development.

The prosperity of the "Song and Yuan China World Ocean Business Center" reappeared through the mountains and overwhelming, and the high -speed rail of China has moved forward.

(China News Network)

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