During the May Day holiday, all the builders of the Tianjin-Weihai high-speed railway were busy with construction, and the integrated erection of bridge deck ancillary facilities and box girders was innovatively realized, which was promoted for the first time in the construction of high-speed rail in the country.
The reporter saw at the construction site of the Lijin section of the seventh standard in front of the Jinwei high-speed railway station that the integrated erection of the bridge deck ancillary facilities and box girders was realized for the first time on the whole line, and the construction efficiency and quality will be greatly improved.
Prior to this, the ancillary facilities of the prefabricated box girder bridge deck of the high-speed railway are generally constructed after the box girder is erected, and there are defects such as high safety risk of cast-in-place construction, difficult to ensure the quality of pouring construction, and long construction period. In order to change this traditional process, the technical team of China Railway Fourth Bureau, which is responsible for the construction task, has stepped up research and testing, and has made a breakthrough in the near future. Liu Zhiping, deputy director of the seventh standard Lijin beam making yard in front of the Jinwei high-speed railway station of China Railway Fourth Bureau: The seventh standard beam yard in front of the Jinwei high-speed railway station of China Railway Fourth Bureau has passed the process test of integrated erection of bridge deck ancillary facilities, which effectively solves traditional construction problems, improves construction efficiency and quality, and reduces the safety risk of "three walls" construction, which provides a more standardized and efficient solution for the construction of prefabricated box girder bridge deck ancillary facilities of high-speed railway. Compared with on-site pouring in terms of comprehensive efficacy, it has obvious advantages and broad prospects for promotion.
Tianjin-Weihai high-speed railway is an important longitudinal of the national "eight vertical and eight horizontal" and "four horizontal and six vertical" railway network in Shandong Province, with a total length of 348.257 kilometers and a design speed of 350 km/h from Tianjin Binhai Station in the north to Weifang North Station of Jinan-Qingdao High-speed Railway in the south. The construction period of the project is 60 months, and it is planned to be completed and opened to traffic in 2027. The fastest station in front of the seven bids is 18 kilometers long, and the project department implements "penetrating management" on site to promote the construction of the project in a scientific and orderly, safe and high-quality manner, ensuring that various control measures are in place and the project is promoted at a high speed.