The picture shows the hanging irrigation bridge machine. Photo by correspondent Zhao Jun Visual Chongqing.
On February 1, the first suspension irrigation bridge building machine of the whole line of the Chongqing-Wanzhou high-speed railway was officially put into use at the construction site in Zhongxian County, and the concrete pouring of the No. 1 section of the continuous beam of the No. 7 main pier of the Pujipu double-line bridge was successfully completed.
The 3 bids in front of the Yuwan high-speed railway station are located in the boundary of Zhongxian County and Fengdu County, with a total length of 3601 km (2072 kilometers, 15 in Fengdu29 km), of which 6 tunnels are 1283 km, 33 bridges 1456 km, 36 sections of roadbed 862 kilometers, the proportion of bridges and tunnels in pipe sections is large, and the number of special hole spans is large.
In particular, the Pukeipu double-line extra-large bridge, with a total length of 1375387 meters, its continuous rigid bridge is located in the natural valley landform of the high and steep slope of the mountain, the bridge No. 7, No. 8 pier is the continuous rigid main pier, of which the No. 7 pier located in Zhongxian County is 78 meters high, is the highest pier body of the pipe section.
Adhere to innovation-led and intelligent construction, and strive to build ecological railways and high-quality projects in the difficult and dangerous mountainous areas of southwest China. According to the relevant person in charge of Zhongxian County, the Third Bureau of China Railway and the Fifth Institute of China Railway have jointly developed the most advanced suspension irrigation bridge building machine for the above-bearing structure railway in China to ensure the safe and efficient progress of continuous beam construction, "Compared with the traditional hanging basket construction technology, the comprehensive work efficiency can be increased by more than 20%, injecting new kinetic energy into the high-quality construction of the Chongqing-Wanzhou high-speed railway." ”
The bridge-making machine is composed of multiple systems such as mobile support, template, electronically controlled hydraulic, safety protection, informatization, intelligent control, etc., with low center of gravity, good integrity, stable stress structure, and three-dimensional safety channels are set up on the upper, middle and lower floors, so that the construction is safer. The bridge-making machine can be applied to the construction of continuous beams with different spans and different sections, and can realize the automation of the bridge-making machine's walking, formwork adjustment, linear monitoring, and spray maintenance, which has the characteristics of safety, efficiency, convenience and intelligence.
At the construction site, the project department has also established an information center to monitor, accurately control and warn the construction process in real time through new technologies such as big data and 5G, so as to make the construction of continuous beams safer.