On October 24, the ballastless track construction of the Yellow River Grand Bridge on the Xiong’an–Shangqiu section of the Beijing–Hong Kong High-Speed Railway, undertaken by China TIESIJU Civil Engineering Group under CREC, was successfully completed, laying a solid foundation for subsequent track laying work.
The bridge is located between Liangshan County in Shandong Province and Taiqian County in Henan Province. It is the only controlling engineering structure along the entire line, with a main span of 1,600 meters and approximately 43,000 tons of steel used in its construction.
Ballastless track construction is one of the most technically demanding phases in high-speed railway projects. The Yellow River Grand Bridge faced two main challenges during this process: variations in girder length caused by temperature fluctuations, and vertical displacement under train loads in the large-span structure. Both factors directly affect the smoothness of the track slabs.
To address these challenges, the project team of China TIESIJU Civil Engineering Group developed an integrated control plan. They used water bag preloading to accurately assess bridge stiffness, established an all-weather temperature deformation monitoring system, and applied dynamic coordinate correction technology to effectively resolve line-shape control issues for the ballastless track. For quality control, the team introduced advanced CRTSIII slab-type ballastless track pressing equipment, a digital construction management system, and integrated leveling and finishing machinery, greatly improving the fine adjustment precision of the track slabs.
Once completed, the Beijing–Hong Kong High-Speed Railway will greatly enhance interconnectivity between the Beijing–Tianjin–Hebei region and the Yangtze River Economic Belt, effectively promoting high-quality economic and social development along the route.
