China News Service, Nanchang, April 3 (Reporter Liu Zhankun) On the afternoon of the 3rd, above the main waterway of Jinxi Lake and Fuhe River in the core lake area of Poyang Lake, located in Jinxian County, Nanchang City, Jiangxi Province, with the completion of the last concrete pouring, Chang The continuous rigid frame beam with a total span of 318 meters of the Jinxihu Bridge on the Jinghuang High-speed Railway was successfully closed. This is the first large-span continuous beam in the Jiangxi section of the Changjing-Huangshan High-speed Railway. Lay the foundation for beam erection and track laying operations.
The picture shows that on the afternoon of April 3, construction workers were pouring continuous rigid frame beams on the construction site of the Jinxihu Bridge on the Changjing-Huangshan High-speed Railway.
Photo by Shang Jinqi
As a control project of the Jiangxi section of the Changjinghuang high-speed railway, the Jinxihu Bridge spans Jinxi Lake, the core lake area of Poyang Lake, with a total length of 33.14 kilometers, spanning multiple water routes and expressways, and a total of 9 continuous beams.
The main span of the continuous beam of Helong is 152 meters, the pile length is 75 meters, and the pile diameter is 2.5 meters.
The picture shows the Helong site of the long-span continuous beam pouring operation at the construction site of the Changjing-Huangshan High-speed Railway Jinxihu Bridge on April 3.
Photo by Bao Gansheng
Zhang Zhongliang, Secretary of the Party Branch of the Third Division of Changjinghuang Railway, Changjinghuang Railway, China Railway 25th Bureau, said that the project builders optimized the arrangement of the beam sections, and used separation equipment to separate the sediment in the hole cleaning process, which solved the problem of large-diameter and ultra-long piles. The installation of the foundation is difficult, the installation time of the super-long and over-weight steel cage is long, and the slag is large, which shortens the construction period and ensures the smooth closing of the project.
The picture shows the construction site of the Changjing-Huangshan High-speed Railway Jinxihu Bridge on April 3. Construction workers are pouring large-span continuous beams.
Photo by Bao Gansheng
Since the bridge is located in the Poyang Lake National Nature Reserve, the construction unit and the construction unit always adhere to the concept of "construction is always environmentally friendly, and green is returned to the lake" to maximize land use benefits.
Zhang Zhongliang said that they set up a sedimentation tank for the mud generated by the construction, and recycled it to meet the national standards. At the same time, the excavation area was backfilled in time, and grass seeds were sprayed, so as to return the "green" to nature and ensure ecological environmental protection and railway construction. Harmony.
The picture shows the construction site of the Changjing-Huangshan High-speed Railway Jinxihu Bridge on April 3. Construction workers are pouring large-span continuous beams.
Photo by Bao Gansheng
Changjing-Huangshan High-speed Railway is a national key project and an important part of the national high-speed railway network. It starts from Nanchang City, Jiangxi Province in the west, passes through Shangrao City and Jingdezhen City in Jiangxi Province, and ends in Huangshan City, Anhui Province in the east. The main line is 289.908 kilometers long, including Jiangxi Province. The section is 200.274 kilometers long and has a design speed of 350 kilometers per hour.
As a control project of the Jiangxi section of the Changjinghuang high-speed railway, the Jinxihu Bridge spans Jinxi Lake, the core lake area of Poyang Lake, with a total length of 33.14 kilometers.
Photo by Bao Gansheng
It is understood that the Jiangxi section of the Changjinghuang high-speed railway is expected to be ready for operation by the end of 2023.
At that time, Jingdezhen, Yugan, Poyang and other four counties and one city will end the history of blocking the high-speed railway at a speed of 350 kilometers per hour, and will speed up the high-quality development of the Ganjiang New District along the line, the Poyang Lake National Independent Innovation Demonstration Zone, and the Jingdezhen National Ceramic Culture Inheritance and Innovation Experimental Zone. Rapid and coordinated development is of great significance.
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