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Introduction to Jiujiang Yangtze River Bridge?

The Jiujiang Yangtze River Bridge is located on the broad Yangtze River between Xunyang District, Jiujiang City, Jiangxi Province, and Huangmei County, Huanggang City, Hubei Province. It is the largest highway and railway bridge on the Yangtze River in China in the mid-1990s. It is the north-south railway channel in China.

The Beijing-Kowloon Line and the G105 National Highway are important bridges across the Yangtze River.

The completion of the Jiujiang Yangtze River Bridge is another new milestone in the history of bridge construction in China, following the Wuhan Yangtze River Bridge and the Nanjing Yangtze River Bridge. The total length of the bridge is 7,675 meters.

The Jiujiang Yangtze River Bridge is the eighth bridge built on the Yangtze River in China. Before the Wuhu Yangtze River Bridge was opened to traffic in 2000, the Jiujiang Yangtze River Bridge had been China's longest and largest railway and highway bridge.

The Jiujiang Yangtze River Bridge was completed on January 16, 1993. It is the "natural thoroughfare" of the Beijing-Kowloon Railway and the Hejiu-Kowloon Railway. It is a double-decker, double-track railway and highway bridge.

The Jiujiang Yangtze River Bridge is not only the longest steel truss bridge in China but also in the world for both railway and highway use. It is not only the main artery of transportation between the north and south of China, but also the most eye-catching and famous tourist attraction in Jiujiang City.

The Jiujiang Yangtze River Bridge is a double-decker, double-track railway and highway bridge, consisting of a main bridge and highway and railway approach bridges on the north and south sides.

Among the architectural structures, the main bridge on the river is 1806 meters long, with 10 piers and 11-hole steel beams. In addition to the ordinary steel truss beam with a length and span of 160 meters, the main channel is a three-hole rigid truss and a flexible arch, with a truss height of 16 meters and a span of 160 meters.

It is 180 meters, the maximum span of the middle hole is 216 meters, and the maximum height is 32 meters.

Made of 15-manganese barium vanadium nitrogen high-strength low-alloy steel, the maximum thickness of the steel plate is 56 mm, and the steel beam members are riveted with high-strength bolts with a diameter of 27 mm.

The main bridge highway is on the upper level. Outside the three major arches, the driving lane is 14m wide and there are 2m wide sidewalks on both sides. In the three major arch parts, the driving lane is 11m. There are 3.75m motor vehicle lanes and 1m wide sidewalks on the outside of the arch.

The railway is on the lower level, and the distance between the two lines is 4.2m.

The railway is medium-live load (the prestressed box girder is checked to be medium-26); the highway is designed according to steam-20, and the load is -100 and checked; the crowd is 3.5KN/m2.

The navigation clearance height is 24.0m, the clear width is 160.0m, and it is arranged according to 3 holes.

The earthquake fortification is based on the design intensity of 7°.

The main bridge steel beam has 11 holes, and all steel beams are bolted welding structures.

The total length of the main bridge is 1806.712m, with 10 piers in the middle of the river and one abutment on each side of the river. The south bank of the railway approach bridge is 1428.444m; the north bank is 4440.934m. The total length of the railway part is 7676.09m.

The approach bridges all adopt 40m ballastless and pillow-free prestressed concrete simply supported box girders.

2 box beams per hole.

The south bank approach bridge of the highway is 1347.02m long, the north bank approach bridge is 1306.389m long, and the highway approach bridge is 4460.122m long. They are all 40m prestressed concrete T-beams with 8 pieces per hole.

The important Jiujiang Yangtze River Bridge was surveyed and designed by the Bridge Engineering Bureau of the Ministry of Railways in December 1973.

The Jiujiang Yangtze River Bridge is the eighth bridge built on the Yangtze River in China after the Wuhan Yangtze River Bridge. It is also the longest and largest railway and highway bridge in China.

Whether it is the bridge's design, construction technology, or the use of new building materials, it reflects China's most advanced bridge construction level to date.

The entire bridge has a novel design, beautiful shape, unique craftsmanship and majesty.

The bridge's railway approach adopts ballastless and sleeper-free prestressed box girders, which is the first time in the history of bridge construction in China.

The main river channel has a large span of 216 meters, ranking first among bridges in the country.

The Jiujiang Yangtze River Bridge is the "natural thoroughfare" between the Beijing-Kowloon Railway and the Hejiu-Kowloon Railway. It is a double-decker, double-track railway and highway bridge.

Jiujiang Bridge is not only the longest steel truss bridge in China but also in the world for both railway and highway use. It is not only the main artery of transportation between the north and south of China, but also the most eye-catching new tourist attraction in Jiujiang.

In 1992, the Jiujiang Bridge highway bridge was officially completed and opened to traffic, and in 1995, the Jiujiang Bridge railway bridge was completed.

After the entire line of the bridge is opened to traffic, it will become the hub of the Beijing-Kowloon Railway. It will have important strategic significance for strengthening transportation between the north and south of China and promoting economic construction, cultural exchanges and tourism in east and central China.

The new 15 manganese barium nitrogen steel type tested for the first time in China was first used on this bridge.

The steel, cement, wood and other construction materials used in this bridge set a record in the history of bridge construction in China.

The distance from the top of the Jiujiang Bridge pier to the lowest bottom of the foundation is 64 meters, which is equivalent to a 22-story building.

From the steel beam vault to the lowest base of the foundation, it is 132 meters high, which is equivalent to a 45-story high-rise building.

The geological conditions of Jiujiang waters are complex, the water is deep and the currents are rapid, making construction difficult.

The construction unit adopted a series of new technologies and processes such as double-walled steel cofferdams, mud jacket sinking, and air curtains in the basic project to ensure the quality of the project and was highly praised by the famous bridge expert Mao Yisheng.

The first "large-diameter drilling foundation construction method for double-walled steel cofferdams"; the first time the "thixotropic mud jacket" and "air curtain" construction techniques were used for the main bridge and approach bridge caisson foundations with a sinking depth of 50m; successful trial production of diameter 2.5m reverse circulation rotary drilling rig, and was used for the first time in bridge construction in my country; the main bridge rigid beam adopts a new steel grade of 15MnVNg low-alloy high-strength steel, and the bolted structure replaces the riveted structure; the double-layer sling frame is fully extended for the first time The arm is installed with a 180m steel truss beam; the 216m long-span mid-span closing and flexible arch closing processes are used for the first time; the new "mass-tuned damper" (TMD) that suppresses vibration is used on the booms of the three major arches for the first time in China; self-designed The manufactured bridge-erecting machine with a lifting capacity of 300t can erect railway box girders with a span of 40m, which is the first of its kind in China.

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