|
The Shenzhen-Zhongshan Link, crossing the Pearl River estuary in China, is a world-class cross-sea cluster project featuring “bridge-island-tunnel-undersea interconnection”. It is a major national project and a core transportation infrastructure in the Guangdong-Hong Kong-Macao Greater Bay Area. The steel structure of the bridge and tunnel is large in scale and difficult to construct. After years of technological research and development, the project has established a system for intelligent manufacturing technology of steel structures for bridges and tunnels through theoretical analysis, experimental calibration, equipment development, process testing, and engineering verification, achieving favorable results. The project has proposed a ‘four-line, one-system’ technological framework for the intelligent manufacturing of steel structures in cross-sea cluster engineering projects, encompassing bridges and tunnels. It has developed a hybrid programming technology for complex components based on features and visual recognition using robotics. The project has also overcome key technologies for the high-precision manufacturing of extra-wide and variable-width immersed steel shells made of special materials, as well as three-dimensional measurement and control methods. Additionally, it has developed a full penetration welding joint for the U-ribs of orthotropic steel bridge decks using double-sided submerged arc welding. his has significantly enhanced the level of steel structure manufacturing, leading to the transformation and upgrading of the steel structure manufacturing industry.
|
