Recently, the construction of the main cable strands of the Lingdingyang Bridge of the Shenzhen-Zhongshan Channel has been completed, and the bridge construction has made a breakthrough.

There are two main cables on the left and right sides of Lingdingyang Bridge, and a single main cable consists of 199 cable strands. Each cable strand is composed of 127-wire, 6 mm diameter 2060 MPa high-strength durable steel wire, and a single cable strand can bear the ultimate tensile force of up to 740 tons.

"We used the 2060 MPa main cable steel wire independently developed and manufactured, which is currently used in bridge construction and has the highest strength grade of main cable steel wire in China." Chen Huanyong, chief engineer of the Shenzhen-Zhongshan Channel Management Center, introduced, "At the same time, we Combined with the marine environment where the Lingdingyang Bridge is located, a new alloy-coated steel wire has been developed, which greatly improves the corrosion resistance and durability of the main cable."

The main cable steel wire with higher strength and stronger durability not only enhances the reliability and durability of the bridge, but also is of great significance for improving the span of China's long bridges, the main cable steel wire and cable manufacturing technology level, and will continue to consolidate my country's bridge technology. international advanced status.Editor/Ma Xue