Sidu River Bridge
30.62109110.3952Koordinaten: 30 ° 37 ' 15.9 "N, 110 ° 23' 42.7 " E
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Siduhe
The Siduhe Bridge (Chinese四 渡河 特 大桥, in the English language and Si You River Bridge ) is a 1100 m long suspension bridge that crosses the valley of the Siduhe in the vicinity of the greater community Yesanguan in a circle Badong in southwest China's Hubei province. Since its opening on 15 November 2009, she is with 472 m height between the road and the river bed is the highest bridge in the world. The Siduhe Bridge was according to the plans of the Chinese Company CCCC Second Highway Consultants Co. Ltd.. ( CCSHCC ) built. It cost 720 million yuan, which is about 80 million euros.
Location
The bridge is part of the highway Shanghai - Chongqing (G50 ) of a running east -west toll highway, which over Yichang millions cities of Shanghai and Chongqing connects and which since its continuous opening 19 December 2009 as a quick alternative to the Chinese highway G318 is used, which leads to numerous curves through the mountainous terrain. The strong in relief topography in Wushan Mountains south of the Three Gorges required the construction of numerous bridges and tunnels during the motorway construction. The most notable structure of this highway is the Siduhe Bridge, which spans the deep valley of the Siduhes at an altitude of 472 m.
Design and specifications
The pylons on both sides of the Taleinschnitts were built in H-form by mid-year 2006. They have a height of 118.2 m 113.6 m respectively. Other sources speak of a tower height of 122 m and 118 m. Subsequently, the first (1300 m long ) was auxiliary cable not fired with a conventional method, but with a military rocket from west to east across the ravine on 9 October 2006 as a world first.
In the course of the two supporting cables were installed. Each of the two main cable consists of a bundle of 127 prefabricated steel parts, each of which is in turn combined in 127 high-strength steel wires with a diameter of 5.1 mm. Both supporting cables are designed so that they can hold a maximum tensile force of 192 newtons per mega. Another special feature of this suspension cable anchored on the east side due to the topographical location in a 40 m long tunnel was driven into the mountain and about 23 m above the adjacent road tunnel.
After mounting the platform girder, a steel truss structure of 26 m width and 6.5 m height followed. It is the deck which has a width of 24.5 m. It leads in each direction two lanes and a hard shoulder.
The center span of the suspension bridge (between the two pylons ) is 900 m. This is followed in the West Vorbrücke ( flyover ), which has a length of 208 m and ends with the anchor blocks on a ridge on the western side of the valley. To the east of the 120 m high pylon stands in front of the entrance to the 3550 m long Baziling tunnel, there is therefore on this page is no ramp bridge. However, the supporting cables are still 114 m long, before they flow into the specially drilled into the mountain tunnel in which they are anchored. This results in different lengths for the Siduhe Bridge. While the actual road bridge is 1100 m long, a length of 1222 m is given for the suspension bridge usually that refers to the length of the suspension cable. The longitudinal slope of the roadway on the bridge is 2.41%, with the highest point on the west side lies.
Even on the level of Siduhe Bridge, there are different information. The most widespread is the indication of a clear height of 472 meters between the road and the river bed. Other sources mention a height of 500 m, 550 m and even 560 m, where it is not clear whether all authors refer to the same reference points, or the difference in elevation between the river bed and top of the pylons. With its opening on 15 November 2009 they replaced the also located in China Beipanjiang Bridge, which was from 2003 to 2009 with a height of 366 m as the tallest vehicular bridge in the world.