China's self-designed high-speed railway suspension bridge has been completed and opened to traffic, and this project has created seven world records. 1, the world's first high-speed railway suspension bridge. 2. The world's largest railway suspension bridge. 3. The suspension bridge with the largest main cable diameter in the world. 4. Suspension bridge with the largest open caisson foundation area on land in the world. 5. The world's first suspension bridge with slab-truss combined with new stiffening beam structure. 6. For the first time in the world, the rolled stainless steel composite plate is applied to the railway ballast bridge deck. 7. It is the first time in the world to adopt full penetration welding technology between the U-shaped rib of orthotropic plate and the top plate. Next, let's take a look at the high-speed railway suspension bridge designed by China.

1. China's self-designed high-speed railway suspension bridge is a steel truss suspension bridge with a total length of 6.4 kilometers and a main span of 1.092 meters, which spans the Yangtze River waterway. The upper floor is expressway and eight-lane expressway with a design speed of100km, and the lower floor is a four-lane high-speed railway with a design speed of 250km. This design reminds me that Nanjing Yangtze River Bridge is also the design of railway under highway, but the two bridges are very different. Wufengshan Yangtze River Bridge of Lian Zhen high-speed railway has higher technical content than Nanjing Yangtze River Bridge.

Second, this suspension bridge has set seven world records. The Wufengshan Yangtze River Bridge, a high-speed railway in Lian Zhen, has set seven related world records and become the first bridge in the world. Wufengshan Yangtze River Bridge, a high-speed railway in Lian Zhen, will also become an important traffic building on the Yangtze River, and it will also be a new business card for China, so that foreigners can see the strength of China.

Thirdly, this suspension bridge shows the technology of China. Lian Zhen Wufengshan Yangtze River Bridge shows China technology. This is the first time in the world to adopt full penetration welding technology between the U-shaped rib of orthotropic plate and the top plate, which can be said to be unique in China. It is also the first time in the world to use rolled stainless steel composite steel plate on railway ballasted bridge deck, which is also a technological innovation.