The largest and heaviest single -frame frame bridge under construction in the northwest area is wearing a salted copper railway station under the bridge.

Wen Wangyu Zhang Xionghui

The construction lasted for 1 year and 8 months. On September 17, the largest and heaviest of the northwestern region of my country officially started to push forward, marking the official railway frame bridge, marking the Xi'an city undertaken by the Northwest Company of China Railway 14th Bureau. The construction of the Castle City Channel entered the final sprint stage.

8946 -ton frame bridge wearing a salted copper railway line officially opened (photo by Zhang Xionghui)

The municipal road project of Xi'an Gaocheng Channel (Zhengyang Avenue -Luanhe New Town) is located in the southeast of Luohe New City, Xianhe New District, north bank of Luohe, from Zhengyang Avenue in the west, and east border of Luohe. The main transportation roads in northern Xi'an are the road level of the city, with two -way 8 lanes, 2.42 kilometers in length, including one with the existing salt and copper railway frame bridge. Construction was started on January 28, 2021. All engineering (rainwater, sewage, water supply and electricity) are completed.

The two -purpose salted bronze railway bridge of wearing passengers is the most difficult point in the project, and it is also the last construction node task of the entire bid section, which has attracted much attention from all walks of life.

The main structure of the frame bridge adopts a four -hole conjoined structure, with an oblique angle with the salted copper railway 79.2 degrees, a total length of 62.22 meters, 45.1 meters wide in the top section, 23 meters long, and 9.4 meters high.

The top of the operation is located in the Lianhe Railway Station of the Salt and copper railway. The geological conditions are complicated, the pipelines are buried, and there are 4 lanes on the railway. There is no skylight point. The difficulty of construction difficulty, high technical requirements, high -span box culverts and difficulty control control, high safety risk coefficients are high.

China Railway 14th Bureau Northwest Company scientifically optimized the construction plan, issued a series of safety emergency plans, adopted the soil -eating punch method, and used 26 sets of 500 tons of hydraulic jacks to top the box bridge into 38.8 meters, with a maximum top force of 13,419 tons.

At the top push site, the frame bridge was under the push of the mechanical push, and slowly "moved" along the special slider. Nearly 30 operators were responsible and closely cooperated to monitor them in real time. Real -time measurement of the axis and elevation of the body to ensure that the box is advanced in the scheduled track, and the entire construction site is methodical, tense and orderly. It is expected to be completed in mid -October.

After the project is completed, it will become the main roads in the main urban area of ​​Xi'an and the northern part of Xixian New District, which will greatly alleviate the traffic pressure between the new city of Luohe and Gaoling District, and further enhance the important hubs and other important hubs and surrounding tourist scenic spots such as Xi'an The Unicom ability of the main urban area plays an important role in promoting the integration between regions and the surrounding economic development.

Source: China Railway Construction

Edit: Jia Qi

Review: Xiangwen

School counterpart: Lulu

Editor: Deng Zhuo

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