China's rare giant box girder has recently appeared on the Wuhe Railway

The design speed of Wuhe Railway is 200 kilometers per hour. It is an important part of the national planned "four vertical and four horizontal" railway rapid passenger transport network. Upon completion, it will become an important fast channel connecting the eastern coast with the inland regions of the west.

China's rare giant box girder was launched on the WUA railway

According to reports, in order to meet the design requirements, the beam body used in the railway bridge is a prefabricated large volume, large tonnage prefabricated box girder. The beam body is overweight and overweight, 32 meters long, 3 meters high, 13 meters wide and weighing 900 tons. Its volume and weight are at least 4 times that of ordinary railway bridges. It has its own production process, process control, and construction equipment. strict requirements. In addition, the internal structure is complex, and the steel bars, corrugated pipes, and embedded parts in the formwork are dense, with only 66 tons of reinforcing steel per hole beam. In order to ensure quality, more than 300 pieces of concrete for each beam should be molded at one time, not only to control the concrete temperature, but also to prevent the occurrence of cracks. This requires that all aspects of construction must be strictly controlled to grasp the heat.

Workers are under intense construction for this purpose. The China Railway 25th Bureau Group, which is tasked with making beams, has invested over 100 million yuan. It has built 2 automated beam-making plants in the Mahe City-Wuhan Railway, and has concentrated its elite forces to study assiduously and took the lead in success. The railway made this giant beam and accumulated valuable experience for the prefabrication of 450 porous beams for the next 35 (special) large-middle bridges.

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