Recently, the Lingdingyang Bridge of the Shenzhen-Zhongshan Link was closed on, providing a solid foundation for the opening-to-traffic in 2024.

Besides the Hong Kong-Zhuhai-Macao Bridge, the Shenzhen-Zhongshan Link becomes another world-class cluster project integrating bridges, islands,tunnels, and underwater interchanges. The Lingdingyang Bridge, a suspension one with its main span of 1,666 meters and a three-span steel box girder, is the main part of the Link and CCCC undertakes the construction of the east tower, the east anchorage, the main cable in the upper reaches, and the steel box girder of the bridge.

CCCC constructors build the Lingdingyang Bridge through industrialized and intelligent construction instead of conventional construction ways, making the bridge smart and another new landmark in the Guangdong-Hong Kong-Macao Greater Bay Area.

To build the highest offshore bridge tower, CCCC constructors adopted netting prefabricated through renovative techniques in the construction of steel bars in tower columns, replacing binding steel bars one by one and greatly improving the construction efficiency.

The column climbing speed of the intelligent and integrated tower building machine, known as a vertical and mobile factory, increases by 1.5 times. With a good intelligent maintenance effect, 40% of the construction high above the surface of the river is reduced, allowing the construction to be safer and more efficient with higher quality.

As a vital force-bearing structure, the east and west anchorages are like two huge weights which jointly bear the main bridge weight of nearly 200,000 tons. CCCC draws inspirations from the "bucket hoop principle" to renovate the construction techniques, and builds islands and cofferdams, providing guarantee for subsequent anchorage construction.

The main cable of the bridge consists of 199 strands and each one is about 3,000 meters long and weighs about 85 tons. CCCC constructors remotely predict the relative static height difference of cable strands through optical photography and intelligent analysis, which solves the problems of manpower consumption, low efficiency, and errors in cable force measurement.

In addition, CCCC constructors invent an unmanned traction robot based on image recognition technology, which realizes remote and real-time monitoring, greatly reducing manpower and labor intensity.

The main girder of the upper structure of the Lingdingyang Bridge consists of 213 pieces of steel box girders and the total weight of the steel box girders of the bridge is about 57,000 tons. CCCC constructors develop an 850-ton-class intelligent cable-loaded crane, which can easily hoist 10,000-ton-heavy steel girders. In addition, the crane is equipped with an intelligent construction control system and it can monitor in real time, release synchronous early warning, adjust data, and ensure the safety of hoisting.

Based on the digital twin technology, the project team develops an intelligent construction control system for the upper structure of the suspension bridge to ensure more efficient and safer construction of the upper structure.