Each main cable can withstand the weight of the two medium -sized aircraft carriers at the same time.

Hubei Daily News (Reporter Dai Hui, Correspondent Zhang Zheng, Li Mian) On September 23, with the setting up of the last main cable stock, the Lingyuyang Bridge main cable set up by China Enterprise Enterprise Second Aviation Bureau Done successfully.

The Lingyuyang Bridge is the control of the Shenzhen -Middle Channel. It is a three -span full floating system suspension bridge that spans 1666 meters. The main tower is 270 meters high. It is currently the world's largest span of the steel box beam suspension bridge and the world's highest sea bridge. The Shenzhen -Middle Channel is a cross -sea cluster project that integrates "bridges, islands, tunnels, and underwater interoperability". It is about 24 kilometers in length. It is an important transportation hub connecting the hinterland of the Pearl River Delta and Shenzhen and Hong Kong. It is planned to be opened to traffic in 2024 Essence

The main cable is the core of the suspension bridge. There are two main cables on the Lingshengyang Bridge, jumping through the main tower of the east and west, spanning 1666 meters wide water surface, and the two ends are anchored in the east and west.

Lingshengyang Bridge single -rooted main cable consists of 199 rosewood shares. Each cable shares consist of 127 wire and 6mm diameter 2060 MPA galvanized aluminum steel wire. Essence The main cable shares are about 3,000 meters long and weighing about 85 tons, and the single -rooted main cable weighs 17,000 tons. The total length of the two main cable steel wires can surround the earth for 4 laps. The maximum cable force of each main cable during the Chengqiao stage exceeds 100,000 tons, which is equivalent to being able to withstand the weight of two medium -sized aircraft carriers at the same time.

It is not easy to move the main cable with a total weight of 170 tons to 270 meters. The construction is located in the entrance of the Pearl River. The weather is unpredictable. The brackets carrying steel wires are prone to deformed or even damaged due to position offset.

To this end, the project department of the China Communications Second Aviation Bureau adopted the technical of unattended stocks, remote monitoring of cable stocks, saving manpower and reducing risks. In response to the measurement problems after the erection, the project department independently develops intelligent targets and other equipment, which transmits the construction of key data in real time, and significantly improves the automation and information level of the main cable erection of the large span suspension bridge. After repeated measurement of the position and temperature of each steel wire, the project team grasps the law of the main cable steel wire change and controls the accuracy within 5 mm.

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