The "backbone" of the Guangdong -Hong Kong -Macao Greater Bay Area Super Engineering is expected to be set up in September 2022

On July 25, the deep night reporter learned from the Guangdong Provincial Transportation Group that the main cable stock rack on the left of the Lingyuyang Bridge of the Guangdong -Hong Kong -Macao Greater Bay Area Super Engineering has exceeded 100 roots, and the overall setting has been completed by half.

▲ On July 25th, the Shenzhen -Middle Channel Lingyang Yang Bridge in the construction was under construction. Photo by Chen Xubin

There are 398 roots on the left and right two pieces

The main cable is the main force component of the suspension bridge, and it is known as the "backbrid" of the suspension bridge. The Lingshengyang Bridge single -rooted main cable consists of 199 long cable stocks. Each cable shares consist of 127 wires and 6 mm of domestic independent developed 2060 MPa high -strength wires. Cable steel wire.

Each rope stock is about 3,000 meters long, weighs about 85 tons, the single main cable weighs 16,915 tons, and the main cable weighs 33,830 tons. The total length of the steel wire of the two main cables can surround the earth for 4 laps.

Wang Xiaoli, chief worker of Poly grew up in the Shenzhen -Middle Channel S05 bidding project, said that the use of 2060 MPa high -intensity -level cable steel wires will not only help reduce the amount of main cable steel, reduce wind resistance, and achieve energy conservation and emission reduction. reliability. The main cable of the Lingyuyang Bridge in the Shenzhen -Middle Channel uses a 2060 MPa cable steel wire. This is another upgrade breakthrough after the Nansha Bridge uses 1960 MPa main cable steel wire, which is of profound significance for the development of my country's bridge industry.

Direction and night tuning during the day

In order to better set up the "spine" of the "super engineering" of the Bay Area, Poly grew up to carefully optimize the construction process of the technical team of the Shenzhen -Central Channel S05 bidding project, and reasonably formulate the management system for cable stocks.

The project department combines the work functions of the management personnel of various departments, and is responsible for managing the restaurant setting process. It invested 20 roll -up machines, 2 large tower cranes and other heavy equipment. Twenty -15 workers are responsible for the traction. The construction mode is accelerated, and a single traction takes about 2 hours and 30 minutes.

"During the daytime pulling cable, the inspection of the state of the ropes from the traction of the rosewood to the improvement, the final plastic surgery, and the large -scale cable traction process. Management offers it. "Zhang Kai, deputy manager of Poly grew up in the Shenzhen -Middle Channel S05 bid project.

Due to the large sea style, it has a great impact on night tuning. In order to solve the impact of cable wind vibration on the tuning, the project's innovation proposes "high -precision ruler ride stocks+position+information measurement system+traditional method auxiliary" to perform the vertical adjustment of the rosewood, effectively alleviating the impact of the wind vibration, greatly significantly relieve the impact of wind vibrations, and significant Improve the accuracy of cable stocks.

Zhang Kai introduced that when the cable was adjusted at night, there were often shower in summer, and the cable stocks affected the accuracy of the tuning after wetness. On -site managers temporarily set up a rain -avoiding shed at the horizontal channel of the Cat Road, and saw that the sewing was grabbed to complete the rosewood measurement when the ropes were dry.

The two -way construction model of "traction and night tuning" effectively accelerates the process of cable stocks. During the peak construction peak, a single 4 main cable traction can be completed every day, which is higher than the average construction efficiency of the industry.

The traction of the Lingyuyang Bridge So stock shares is still ongoing. It is expected that all the main cable stocks will be completed in September this year.

At present, the Shenzhen -Middle Channel island tunnel project and bridge project are two -line. In terms of artificial islands, East Artificial Island is fully transferred to the construction of the tunnel structure on the island, and the construction of the ramp tunnel on the island is under the construction of the west artificial island. The sink tunnel has a total of 28 pipes. In terms of bridge engineering, Zhongshan Bridge has been in the dragon, and the construction of roads and subsidiary facilities is being carried out. The project is planned to be opened to traffic in 2024.

Shenzhen Evening News reporter Dong Yuhan Correspondent Yuejiao Jixuan

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