en.Wedoany.com Reported - Construction robots have been deployed for the first time at Hongyuan Station on the newly built Sichuan section of China's Xining-Chengdu Railway, including three types: floor tile thin-paving, wall plastering, and intelligent spray curing robots, marking the entry of station construction into the intelligent construction phase. This was announced by Chengdu-Lanzhou Railway Company.
Hongyuan Station is located in Hongyuan County, Aba Tibetan and Qiang Autonomous Prefecture, Sichuan Province, at an altitude of 3,675 meters. It is a small railway passenger station with 2 platforms and 4 tracks, a station building area of 1,997.72 square meters, and a designed maximum capacity of 300 people. The station building design integrates Tibetan residential architectural styles, with a red facade echoing the spirit of the Long March and Hongyuan.
The Sichuan section of the Xining-Chengdu Railway is situated on the Western Sichuan Plateau, with an average altitude exceeding 3,600 meters, a temperature difference of over 30°C between day and night, and harsh construction conditions due to high altitude, hypoxia, and fragile ecological environment. Ding Lie, commander of the station building project for the Sichuan section of the Xining-Chengdu Railway under China Railway Ninth Group, stated that the project relies on intelligent equipment, improved processes, and new building materials to precisely address construction challenges on the plateau. To tackle issues such as concrete cracking and poor durability in high-altitude, cold regions, the project has completed special research and innovatively developed a constant-temperature and humidity curing system. During construction, frame columns are wrapped with film for curing, beam and slab tops undergo water-retaining curing, and intelligent spray devices are installed in blind spots at beam and slab bottoms, achieving fully automated, no-dead-angle constant-humidity curing of concrete. Meanwhile, raw material mix ratios have been optimized to enhance structural frost resistance and durability.
In the decoration construction phase, the project simultaneously upgraded building materials to adapt to the plateau climate. The original real stone paint on exterior walls was replaced with a dry-hanging stone and aluminum panel system, and the ceilings of corridors and underpasses were replaced with aluminum strip panels. The building's exterior appearance remains unchanged, while the walls' frost resistance, anti-spalling, and aging resistance have been significantly improved. Due to the impact of the plateau's hypoxic environment, manual construction efficiency is greatly reduced. The project introduced three types of intelligent construction robots in batches, replacing traditional manual labor with mechanized operations, reducing on-site workers, and simultaneously improving construction efficiency and physical quality. Currently, the smart construction site management platform at Hongyuan Station has been put into use, integrating various intelligent operation terminals to achieve digital closed-loop control of the entire construction process.
Two innovative technologies have been implemented in the weak current integration project. Zhao Yunlei, project manager of the first bid section for weak current integration on the Sichuan section of the Xining-Chengdu Railway under China Railway Ninth Group's Electrical Engineering Company, introduced that to address the extreme cold damage issue of minus 30°C along the route, all communication and signal cables along the line have been replaced with cold-resistant specialized cables, with a temperature tolerance range of minus 40°C to 105°C and wear resistance doubled compared to traditional cables. All fiber optic repeaters along the line adopt prefabricated modular construction, with factory-prefabricated components assembled on-site, increasing construction capacity by 3 to 5 times and reducing the construction period by over 40%, while also cutting construction dust and construction waste, and saving water and electricity consumption. The prefabricated components have a seismic fortification intensity of 8 degrees, and their lightning protection and frost resistance indicators meet railway construction standards.
Yin Jianwen, commander of the Xining-Chengdu Railway Command under Chengdu-Lanzhou Railway Company, stated that construction of the Sichuan section of the Xining-Chengdu Railway is progressing rapidly. Eight of the 14 tunnels have been completed, all 9 special bridges have been joined, the overall bridge completion rate is 91.1%, the subgrade engineering completion rate is 82.6%, and the overall project construction progress exceeds 54%.
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