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How China is fast-tracking high-speed rail with AI-powered builders

  • AI-powered machines are taking on some of hardest jobs on the world’s largest high-speed railway network
  • Faster, safer and more efficient robotic construction has implications for other infrastructure projects in China and around the world, experts say

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A high-speed train travels near Wuhan, in central China’s Hubei province. China’s railway experts have deployed AI-powered robots to assemble some of the most labour-intensive components of high-speed railway projects. Photo: Xinhua
Stephen Chenin Beijing

The world’s most extensive high-speed rail network is about to get even bigger.

Later this year, several new lines will join the country’s already vast network of electrified rail transport. They include a 277km (172-mile) line between Fuzhou and Xiamen, a 203km route between Guangzhou and Shantou, and a 278km link between Shanghai and Nanjing.

When they go into service, the combined length of the new lines will stretch more than half the total length of Germany’s entire high-speed railway network, each providing trains capable of maximum operating speeds of 350km/h (217mph).

But the latest additions to China’s high-speed railway network differ from most existing lines in the way they were built – by robots, specifically designed for overhead electrified lines. According to engineers involved in the projects, the automated construction methods have been tested and approved for use in the next high-speed rail projects.

Future projects will follow suit,” said Wang Peixiong, chief engineer with the China Railway Construction Electrification Bureau Group, in a paper published in Chinese language journal Railway Construction Technology in July.

The large-scale deployment of overhead electrified line construction robots has been hailed as an industry milestone, signalling that machines can now take over most of the labour-intensive work involved in high-speed railway construction, according to experts.

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