Zhengzhou Yellow River Super Large Bridge of Zhengzhou Jinan Railway enters into superstructure construction in an all-round way

At present, the substructure construction of the main bridge and approach bridge of Zhengzhou Yellow River Super Large Bridge of Zhengzhou Jinan railway has been completed, and the project has been fully transferred to the superstructure construction stage. It is understood that the total length of the main bridge and the south approach bridge of Zhengzhou Yellow River Super Major Bridge of Zhengzhou Jinan railway is 4377 meters, which is the key project and key control project of the whole line. On December 12, according to the project Department of zpzq - ⅶ bid section in front of Zhengzhou Jinan railway station of China Railway Bridge Bureau, the substructure construction of the main bridge and approach bridge of Zhengzhou Yellow River Super Major Bridge of Zhengzhou Jinan railway has been completed, including the construction of bored pile, bearing platform and pier body, and the project has been fully transferred to the superstructure construction stage.

Zhengzhou Jinan high speed railway is located in the northeast of Henan Province and the west of Shandong Province. It connects Zhengzhou and Jinan, two provincial capitals. The line runs from southwest to northeast. As a control project of zhengzhou-ji'an high-speed railway, Zhengzhou Yellow River Super Bridge of zhengzhou-ji'an high-speed railway is a common bridge for zhengzhou-ji'an railway, zhengzhou-xin City railway planned by our province and zhengzhou-xin Expressway Crossing the Yellow River.

Zhengzhou Yellow River Super Bridge is constructed by the project Department of zpzq - ⅶ bid section in front of Zhengji railway station of China Railway Bridge Bureau. The main bridge and south approach bridge are 4377m long, which are the key and key control projects of the whole line. The bridge adopts the form of joint construction of upper and lower layers of highway and railway, and is designed as 4-line Railway (one floor), with design speed of 350 km / h and 160 km / h respectively. And 6-lane Expressway (second floor), the design speed is 100km / h; the main bridge adopts the combination of simple steel truss and continuous steel truss.

According to the person in charge of the project Department of this bid section of China Railway Bridge Bureau, the construction of the bridge has entered into the structural construction on the bridge, including the construction of steel truss girder, cast-in-place box girder, highway frame pier, and the erection of highway small box girder. At present, the project has completed 90.5% of the annual planned output value.

Screw bolts and paint On the morning of the 12th, the reporter saw at the construction site that the workers on the bridge were working hard. It is understood that the main bridge of the bridge adopts 7-hole simply supported steel truss and 8-hole continuous steel truss. The approach bridge is set with 1-hole 120m simply supported steel truss bridge across the levee, with a total weight of 72800 tons. There are 580 small box girders on the upper road of the approach bridge and 120 simply supported box girders on the lower railway. The scale of the project is large. At the same time, most of the main bridge works are located in the Yellow River, bank and shoal areas, which are difficult to construct and require high environmental protection.