Recently, the main pier of Caijiagou Double-track Bridge, the "highest pier" of Yuwan high-speed rail, has entered the construction stage of the first pile foundation in an all-round way. As the control node project of the whole bridge, the successful commencement of the main pier pile foundation marks a significant progress in the construction of the whole bridge.
It is understood that there are 71 main pier pile foundations of Caijiagou double-track super-large bridge. In addition to the first main pier pile foundation under construction, two other main pier pile foundations are also being drilled simultaneously, and all main pier pile foundations are expected to be completed within two months. Chen Xi, the site engineer of Caijiagou double-track grand bridge of Yuwan High-speed Railway Station of China Railway Construction Bridge Bureau, told the reporter: "Caijiagou double-track grand bridge is the control project of this bid section (bid section 5), and is also the key and difficult project of this bid section. With the smooth construction of the first pile foundation of the main pier, it marks the smooth development of the control node project of this bridge." Lay a good foundation
for our follow-up overall construction.
According to the introduction, Caijiagou double-track super-large bridge is 2113.308 m long and the maximum bridge height is 174.6 m. The continuous rigid frame of the main bridge has a large span across the valley, and the maximum pier height is 150.5 m, which is the highest pier in the whole line of Chongqing-Wanzhou high-speed rail, and also the highest pier of the same standard and type in China. At present, the pile foundation construction of the whole bridge has been carried out in an all-round way. There are 567 designed pile foundations, including 71 main pier pile foundations and 496 other pile foundations. According to the design geological conditions, rotary drilling is used in pile foundation construction, and 55 pile foundations have been successfully completed since the end of December last year. According to the plan, the project under the Caijiagou double-track bridge will be completed in August next year. "After the successful completion of the Caijiagou double-track super-large bridge, it has provided a solid foundation for the successful completion of the Chongqing-Wanzhou high-speed rail," said Nie Chenda, the technical director of the Caijiagou double-track super-large bridge before the 5th bid project department of the Chongqing-Wanzhou High-speed Railway Station of the China Railway Construction Bridge Bureau. "The operation of the Chongqing-Wanzhou high-speed rail will also fill the gap in Zhongxian Railway and realize the coverage of Fuling and Fengdu High-speed Railway. It is of great strategic significance for Chongqing to build a national comprehensive railway hub and promote the construction of Chengdu-Chongqing two-city economic circle and the coordinated development of "one district and two groups".
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