The heavy weapon of the big country hangs 3,000 tons of "building blocks", making a bridge like 3D printing -a reporter from the sea super engineering site visiting Hubei prefabricated construction new technology

On the bank of Lingyuyang, the tide surged. A sea super engineering at the shoulders of the Hong Kong -Zhuhai -Macao Bridge -Shenzhen -Middle Channel (Shenzhen to Zhongshan) is stretching "growth". The channel adopts the "East Tunnel and West Bridge" solution, with a total length of about 24 kilometers and a two -way 8 lanes. The total investment of 44.69 billion yuan is the world -class, large and large cross -scale cross -position "bridge, island, tunnel, and underwater interoperability" Sea cluster project.

The complex environment is also the "training ground" of Hubei enterprises. Here, Hubei prefabricated construction iteration upgrades, Dajian skills: Smart Liang Farm based on BMI technology saves 2/3 of manpower than conventional, and thousands of inductive devices spread throughout the field can achieve early warning, monitoring, and tracking; large crane ships; large crane ships "Tianyi" is as stable on the ground on the sea, and the heaviest concrete box beam of 3,200 tons of single -film is lifted up, and the error difference is not more than 5 cm. On the eve of the National Day, a reporter from Hubei Daily all visited the construction site of the China Railway Bridge Bureau in the Shenzhen -Middle Channel.

3000 tons of box beams are lifted on the sea

The Shenzhen -Middle Channel is 17 kilometers. In order to reduce the damage to the marine ecology, the section of the sea bridge mainly uses a 60 -meter box beam with larger single -piece span.

September 19th was 5 am from the bridge day. The sky was bright at the sea. Hubei Daily All -Media reporters stood on the bridge pier and saw that dozens of "Tianyi" on the sea is as smooth as the sea, and more than 20 crew members are everyone. With the command of the on -site construction, the eight groups of large -power rolling machines started at the same time, and the over 450 tons of pipes rose steadily. The 245 tank beams weighted by 3,000 tons, which is equivalent to 2,000 cars.

The sea bridge is like "building blocks", and it is important to hang up equipment. Earlier, the Hubei enterprise was on the bridge on the Dajiang River. Because it was difficult to design and manufacture large -scale lifting equipment. The first -generation box beam construction mainly used short spans and paddling. The construction of the second -generation box beams is generally used. Box beams, but now they have been fighting at sea, large heavy -duty equipment has become the "weapon" of Hubei enterprises. At present, the China Railway Bridge situation can almost achieve a bridge pier and box beam full prefabrication, factory production, and order -type operation.

According to reports, the "Tianyi" has a total length of 93.4 meters, a width of 40 meters, a depth of 7 meters, and a maximum rising weight of 3600 tons. The maximum hook height is 60 meters. It has participated in a number of world -class projects.

"Standing next to it, just like standing below the 30 -story high -rise building." Vice Captain Luo Xiaojie introduced that it will feel the "mountain" as oppression, but the hull will remain stable because the "Tianyi" is being being taken. The four 250 meters of anchor are firmly fixed at sea.

On the top of the pier on both sides of the driving holes, more than 10 staff members stared at and collaborated throughout the process. At 5:37, the box beam was set up between the bridge pier. After measurement, the gap error does not exceed 5 cm. Subsequently, the on -site technicians were refined again.

The project commander Zhang Aimin introduced that on the beams of the Shenzhen -Middle Channel, you need to cross three busy international channels, and you need to consider factors such as tide and wind speed. In order to make the "Liang Mix" go smoothly, Hu Cheng, Minister of the Mechanical Department of the project department, needs to collect the tide information of the next half month and the pier construction of the pier and the shore storage beams in each section. Sailing.

"Low tide goes to the sea, and the climax is erected." Hu Cheng said that at the low tide, the "Tianyi" beam storage area was highly consistent with the beams on the shore, and the reason for the climax was to meet the height of the bridge. Therefore, the operation time here is very unsatisfactory, sometimes five or six in the morning, sometimes two or three in the morning. No sailing at night, the "Tianyi" will need to sail at 6 or seven in the evening to the premium area, and it will not be set up until the day after day. To find the "window period" of each beam, it is two or three days short and half a month long.

Intelligent construction, each beam can be tracked

The quality and production efficiency of the box beam are directly related to the safety of bridges and the progress of the erection, which is also an important part of prefabricated construction. The Shenzhen -Middle Channel Section of the Maritime Bridge needs to set up 791 concrete box beams, all of which are independently produced by the China Railway Bridge Bureau. In addition, 138 steel box beams are participated in prefabricated by enterprises such as Wuchang Shipbuilding Industry.

On September 22, a reporter from the Hubei Daily's all -media reporter entered the 234 acres of Zhongshan Smart Liang Farm. The reinforced bars in the factory area, template assembly, concrete pouring, and pounds in an orderly manner. There are 8 tank beams waiting for transportation to go to sea.

In the command center of more than 100 square meters, a huge display, the important data of Liangchang in real time. Managers can monitor the distribution center, steel processing center, and prefabricated beam.

More than 1,000 cameras and inductive devices in the field are like a "neural sensing" system, which can not only see, but also induced alarm and tracking records.

Ten years ago, the prefabricated beam farms were rare. Even if there were, it was relatively simple. The speed of production beams was slow. Sometimes it was produced half to find that it was not matched with the actual demand on the scene.

Chen Dehua, a technician of Liangchang, introduced that the entire process from material entry to reinforced processing, template installation, concrete mixing and pouring, tensor care, and removal and storage has achieved large -scale intelligence and automation. More than 30 people are needed.

In the reinforced automatic processing center, workers are rarely seen in a 6,000 -square -meter plant. One reinforced sawtopcot, three reinforced cutting production lines, a set of most advanced processing equipment, bombarded, the "bones" of the box beam are produced here. In the center of the reinforcement binding, the fetal shelf of the four reinforced production lines is made of a steel bars based on the BIM 3D model. The workers only need to put the reinforced bars in, and the operation is simple and accurate. Chen Dehua said that the use of BMI can also achieve digital construction previews, and find out the shortcomings of the design process and scheme in advance, thereby optimizing design, improving the efficiency of production operations and box beam quality.

Zhu Jian, director of the project office, said that the core of the prefabricated process is factory production. In the future, bridges are as standard, simple and fast as 3D printing.

(Hubei Daily All -Media reporter Hu Xi correspondent Liu Peiya Zhang Yuchen)

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