Shibanpo-Yangtze Bridge

Shibanpo Yangtze River Bridge ; 石板坡长江大桥
	In front the first, behind the second bridge
use	Road bridge
Crossing of	Yangtze River
place	Chongqing
construction	Box girder bridge
overall length	1103.5 m
width	1st bridge: 20.5 m ; 2nd bridge: 19 m
Number of openings	1st bridge: eight ; 2nd bridge: seven
Longest span	1st bridge: 174 m ; 2nd bridge: 330 m
start of building	1977; 2003
completion	1980; 2006
	location

29.545555555556 106.55988888889Coordinates: 29 ° 32 ′ 44 " N , 106 ° 33 ′ 36" E

The Shibanpo-Yangtze Bridge ( Chinese 石板坡长江大桥 , Pinyin Shíbǎnpō chángjiāng dàqiáo ) is a road bridge that crosses the Yangtze River in Chongqing City, China and the district of Yuzhong , i.e. the actual city center, with the district of Nan'an on the south side of the river connects.

The Shibanpo Yangtze bridge is 330 m span as the most stressed box girder bridge of the world, their opening is however of a prestressed concrete beam spans with a central piece of steel, so that the Stolma Bridge after in Norway remains the largest span of all pure prestressed concrete girder bridges has .

location

The Yangtze River is 940 m wide at the bridge. Its deepest gully, the valley path , runs close to the right bank; In the left two-thirds of the river the water is mostly shallow, but the island of Shanhuba there is flooded when the tide is high. The bridge is still in the area of influence of the reservoir, which is formed by the Three Gorges Dam 450 km further east as the crow flies . Due to its regulation and seasonal flooding, the water level under the bridge can fluctuate by more than 20 m. The Caiyuanba Bridge is only 1200 m upstream .

description

The Shibanpo-Yangtze Bridge connects the two high banks of the river. It consists of two parallel bridge structures.

First bridge

The first bridge or the first part of today's bridge was built between 1977 and 1980. It was the first road bridge over the Yangtze in Chongqing and had two lanes in each direction of travel and a sidewalk and bike path. Since the opening of the second bridge, the four lanes have been combined and lead in a northerly direction.

The 1103.5 m long and 20.5 m wide concrete bridge 8 has fields with Pfeilerachsabständen of 86.5 + 4 × 138.0 + 156.0 + 174.0 + 135 m and unicellular a rectangular haunched hollow box .

Second bridge

The second bridge was built right next to the first between 2003 and 2006. It has four lanes in the south and a sidewalk on the west side. The prestressed concrete bridge , which is also 1103.5 m long and 19 m wide, has 7 fields with pillar spacing of 86.5 + 4 × 138.0 + 330 + 135 m. It also has a single-cell, rectangular haunched box girder with an overall height of 5 to 16 m, but the 330 m wide field has a 108 m long steel middle section.

The bridge was designed by TY Lin International Group , an engineering company headquartered in San Francisco, USA. The steel middle section was produced in Wuhan as a 103 m long, 1325 t heavy box girder with two 2.5 m long transition pieces. The box girder was welded shut and the approximately 1000 km long stretch on the Yangtze and through the locks of the Three Gorges Dam was towed to the construction site, where it was connected to the transition pieces by Dorman Long and lifted into place.

The opening of the bridge on June 23, 2006 was celebrated with a large fireworks display.