Introduction of Anqing Yangtze River Railway Bridge?

Anqing Yangtze River Railway Bridge is located in Yingjiang District, Anqing City, Anhui Province, bordering Tangyan Town, Chizhou City in the east and 22 kilometers upstream of the completed Anqing Yangtze River Highway Bridge. It is the world's first four-line railway cable-stayed bridge with the longest span at the entrance of Wanjiang River in Anhui Province, an important part of Ning 'an intercity railway (Nanjing to Anqing), a transportation and railway hub exchange center connecting Yangtze River Delta urban agglomeration, Wuhan metropolitan area, Poyang Lake urban agglomeration and Changsha-Zhuzhou-Xiangtan urban agglomeration, an important railway hub in southwest Anhui Province, the only railway bridge across the river in Anqing City at present, and the third railway bridge in the Yangtze River basin of Anhui Province after Wuhu Yangtze River Railway Bridge and Tongling Yangtze River Railway Bridge.

Anqing Yangtze River Railway Bridge is a six-span continuous steel truss girder cable-stayed bridge. The design speed of railway bridge Ning 'an line is 250 km/h, and 350km/h is reserved. The design speed of Anjing Railway is 200 kilometers per hour. By then, the travel time from Anqing to Nanjing and Shanghai can be shortened to/kloc-0.5 hours and 3 hours respectively, which greatly shortens the time and space distance between the central cities along the route and the Yangtze River Delta. It is of great significance to accelerate the process of regional economic integration, expand the regional advantages and radiation scope of the Yangtze River Delta, and promote the sustained and rapid economic development along the route and even the Jiangsu and Anhui regions.

general situation

Anqing Yangtze River Railway Bridge started construction on March 20th, 2009, and was completed and opened to traffic on February 20th15165438 10. With a main span of 580 meters, this bridge is the largest railway bridge in the world.

Anqing Yangtze River Railway Bridge is a six-span continuous steel truss girder cable-stayed bridge with a total length of 2,996.8 meters and a main bridge length of 1.363 meters, with an estimated total investment of 65.438+95 billion yuan. Long span, high speed and heavy load are the characteristics of the bridge, with a main span of 580 meters. The steel beam of the main bridge adopts the fifth-generation high-performance WNQ570(Q420qE) bridge steel with independent intellectual property rights, three main trusses bear the load, the whole bridge deck of the orthotropic slab railway, and the new bolt-welded combined double-pull-plate cable beam is anchored, which is the longest span among similar railway bridges at present.

Anqing Yangtze River Railway Bridge is an important part and control project of Nanjing-Anqing intercity railway. The main bridge is a six-span continuous asymmetric steel truss girder cable-stayed bridge with twin towers, three trusses and three cable planes, with a length of1363m.

China Railway Bridge Bureau Co., Ltd. carried out bridge construction simultaneously in Anqing and Chizhou respectively. The steel cofferdams of the two main piers of the bridge are circular double-walled structures with an outer diameter of 56 meters and an inner diameter of 52 meters, which are assembled in three sections. The height of the bottom section of the steel cofferdam of Anqing side main pier is10.3m, and 32 unit blocks need to be assembled. The assembling construction platform consists of three iron barges with the bearing capacity of 1500 tons.

20121219February, the last steel bar of the side span closure section of Anqing Yangtze River Railway Bridge was successfully docked, which marked the accurate closure of the whole bridge of Anqing Yangtze River Railway Bridge, the world's largest four-line railway cable-stayed bridge.

Building parameters

Railway grade: double-track passenger dedicated line and double-track first-class trunk line.

Number of main lines: four lines.

Speed target value: 250km/h on Ning 'an line, with 350 km/h reserved; Fujing line 160km/h, with 200km/h reserved.

Maximum gradient: Ning 'an line12 ‰; Fujing line is 6‰.

Minimum curve radius: 3500m on Ning 'an line.

Traction type: electric power.

Bridge design load: medium live load and ZK live load.

function

Anqing Yangtze River Railway Bridge is the control project of Ning 'an intercity railway, which not only undertakes the passenger transportation of Nanjing-Anqing intercity railway, but also undertakes the passenger and cargo transportation of the north-south river crossing channel.

Turning "natural moat into thoroughfare" to break through the traffic bottleneck of Anqing railway lies in that it will bring changes to a city's spatial development, people flow, logistics and capital flow, which is conducive to Anqing's "building momentum with bridges and prospering the city with roads", relying on big traffic, cultivating big markets, developing big industries and building big cities.

As a result, the five cities in Wanjiang are connected with Nanjing and even the cities in the Yangtze River Delta, and the urban development space is suddenly opened, which brings a brand-new geo-economic pattern and strategic development opportunities for Wanjiang and the Yangtze River Delta region.

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