The world's first cable-stayed bridge for long-span ballastless high-speed railway was built

The world's first cable-stayed bridge for long-span ballastless high-speed railway was built
.
Ganzhou Ganjiang Special Bridge is located in Zhanggong District, Ganzhou City, Jiangxi Province, and the bridge site is located 1.
9Km downstream of the confluence of Zhangjiang and Gongjiang, a tributary of the Ganjiang River, and is known as the "First Bridge of the Ganjiang River in a Thousand Miles"
.
The bridge is 2.
155km long and designed as a two-lane ballastless track with a speed of 350 kilometers
per hour.
The main bridge adopts a double-tower cable-stayed bridge, with a main span of 300 meters, a total height of 120.
6 meters above the bottom of the 35# and 36# towers, and a tower height of 88.
176 meters above the bridge deck, which is the first cable-stayed bridge
of high-speed railway with long-span ballastless track in China and even the world.

The Ganzhou Ganjiang Special Bridge of the Nanchang-Ganzhou Passenger Dedicated Line, built by China Railway Group, has entered the stage of rapid construction
.
The bridge structure has five innovative points: first, the box-shaped steel-concrete combined beam is used for high-speed railway long-span cable-stayed bridges for the first time; the second is the first laying of ballastless tracks on cable-stayed bridges of high-speed railways; The third is the new steel-mixed section structural connection technology; Fourth, the Sota steel anchor box structure was applied to the cable-stayed bridge of long-span railway for the first time in China; Fifth, it is the first time that the anchor pull plate is applied to the
cable-stayed bridge of high-speed railway in China.
The construction process of the bridge is complex, difficult, tight in construction period, and it is in the navigable river construction, which is a major difficulty and control project
of the whole line.

In order to complete the construction task of Ganzhou Ganjiang Special Bridge with high efficiency and high quality, after receiving the notice of winning the bid, the employees participating in the construction ran into the site to select a site to build a home, quickly rolled out the construction of Dalin and carried out the main construction at the same time, overcoming the difficulties such as the largest winter flood in Ganzhou and the rainy season after the year, with the strong support of the owner and the local party committees and governments at all levels, the work was rapidly advanced, and the project construction achieved remarkable
results 。 The project manager department received the winning bid notice for 10 days to move in, listing, and office; It took only 15 days to prepare for the preliminary preparations such as the entry of the team's equipment, on-site investigation and survey, pile emplacement, and requisitioning and demolition; It took only 30 days for the concrete mixing plant to be completed and accepted into production from the beginning of land acquisition and installation; The trestle bridge of the special bridge began construction for 30 days, paving the construction channel
of 6 water piers.
It has achieved the "four fast" goals
of fast start-up, fast relocation, fast requisition and demolition, and fast construction start.

As of June 10, 81% of the total design of pile foundation of Ganzhou Ganjiang Special Bridge has been completed, 52.
6% of the design of the bearing platform has been completed, and 31.
6% of the design of the pier has been completed, and the construction progress meets the requirements of the implementation group, and the project construction is advancing
rapidly and orderly.
The employees involved in the construction are determined to overcome difficulties and work hard in accordance with the construction requirements of "planning a high starting point, high management standards, building high quality, promoting high efficiency, and opening high reliability", and build the Ganzhou Ganjiang Special Bridge into a "demonstration project, safety engineering, high-quality engineering, high-efficiency engineering, environmental protection engineering, clean engineering, and harmonious engineering"
of the whole line.