Siduhe Bridge

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Coordinates: 30 ° 37 ′ 16 ″  N , 110 ° 23 ′ 43 ″  E

Siduhe Bridge
Siduhe Bridge
2011
use Shanghai – Chongqing highway
Crossing of Siduhe
place near Yesanguanzhen ( China )
construction Suspension bridge
overall length 1100 m
width 24.5 m
Longest span 900 m
height 472 m
building-costs approx. 80 million euros
opening November 15, 2009
planner Angela Second Highway Consultants Co. Ltd.
location
Siduhe Bridge (China)
Siduhe Bridge
Siduhe Bridge under construction, 2008, looking east towards Siduhe Tunnel
Siduhe Bridge-1.jpg

The Siduhe Bridge ( Chinese 四 渡河 特 大桥 , also Si Du River Bridge in English ) is a 1,100 m long suspension bridge that crosses the Siduhe Valley near the large community of Yesanguan in Badong County in the southwest of the Chinese province of Hubei . When it opened on November 15, 2009, it was the highest bridge in the world with a height of 472 m between the roadway and the river bed (until 2016). The Siduhe Bridge was built 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 Shanghai – Chongqing (G50) freeway, a toll freeway running in an east-west direction, which connects the megacities of Shanghai and Chongqing via Yichang and which, since its continuous opening on December 19, 2009, has been a fast alternative to the Chinese G318 highway serves, which leads with numerous curves through the mountainous terrain. The high-relief topography in the Wushan Mountains south of the Three Gorges required the construction of numerous bridges and tunnels in the course of the motorway construction. The most remarkable structure on this highway is the Siduhe Bridge, which spans the deeply cut valley of the Siduhe at a height of 472 m.

Construction and technical data

The pylons on both sides of the valley cut were built in an H-shape by mid-2006. They are 118.2 m and 113.6 m high, respectively. Other sources speak of a tower height of 122 m and 118 m. Then on October 9, 2006, as a world first, the first (1300 m long) auxiliary suspension rope was fired from west to east over the gorge using a military rocket instead of a conventional method.

The two suspension cables were then installed. Each of these two main cables consists of a bundle of 127 prefabricated steel cables , each of which is made up of 127 high-strength steel wires with a diameter of 5.1 mm. Both suspension cables are designed so that they can each hold a maximum tensile force of 192  meganewtons . As a further special feature, these suspension cables are anchored on the east side due to their topographical location in a 40 m long tunnel that was driven into the mountain and is around 23 m above the adjacent road tunnel.

This was followed by the assembly of the track girder , a steel framework construction 26 m wide and 6.5 m high. The carriageway slab, which is 24.5 m wide, lies on top. It has two lanes and one hard shoulder in each direction.

The mean span of the suspension bridge (between the two pylons) is 900 m. This is followed in the west by the fore bridge (ramp bridge), which is 208 m long and ends together with the anchor blocks on a ledge on the western slope of the valley. In the east, the approximately 120 m high pylon stands directly in front of the entrance to the 3550 m long Baziling tunnel , so there is no ramp bridge on this side. However, the suspension cables are still 114 m long before they flow into the specially drilled tunnel in the mountain in which they are anchored. This results in the different length specifications for the Siduhe Bridge. While the actual road bridge is 1,100 m long, the suspension bridge usually has a length of 1,222 m, which relates to the length of the suspension cables. The longitudinal slope of the roadway on the bridge is 2.41%, the highest point being on the west side.

There is also different information about the height of the Siduhe Bridge. Most common is the specification of a clearance height of 472 m between the roadway and the river bed. Other sources give heights of 500 m, 550 m and even 560 m, although it is not clear whether all authors refer to the same reference points or to the difference in height between the river bed and the top of the pylons. When it opened on November 15, 2009, it replaced the Beipanjiang Bridge , also located in China , which was the highest navigable bridge in the world from 2003 to 2009 with a height of 366 m.

Web links

Commons : Siduhe Bridge  - Collection of Images, Videos and Audio Files

Individual evidence

  1. ↑ a b According to information on the bridge information board: Highest Bridge in the World - The Si Du River Bridge in China. YouTube video , etc. a. with a trip over the Siduhe Bridge.
  2. ↑ a b The Siduhe Bridge - World's highest bridge built in China. (PDF; 253 kB) (No longer available online.) Archived from the original on March 3, 2016 ; accessed on January 23, 2011 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / koti.kontu.la
  3. ↑ a b Eric Sakowski: Siduhe River Bridge. (No longer available online.) In: www.highestbridges.com. Archived from the original on March 2, 2012 ; Retrieved January 24, 2011 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.highestbridges.com
  4. ↑ CCCC Second Highway Consultants Co., Ltd. Retrieved January 23, 2011 .
  5. ↑ a b c d e f g h i Chongxu Wang, Yuancheng Peng, Yinbo Liu: Crossing The Limits . In: Civil Engineering Magazine . tape 79 , no. 1 , p. 64–80 , doi : 10.1061 / ciegag.0000206 .
  6. ^ Car trip from Chongqing to Shanghai at cost 17 hs. Chongqing Municipal Government, archived from the original on November 1, 2013 ; Retrieved January 23, 2011 .
  7. ↑ a b Eugenio A. Merzagora: Siduhe Bridge: Un nuovo record mondiale. In: Strade & Autostrade. June 5, 2010, archived from the original on November 21, 2013 ; Retrieved January 23, 2011 .
  8. ↑ Liu, Yinbo; Chongxu Wang, Yuancheng Peng (2008): The Construction of Si Du River Suspension Bridge . Proceedings of the 2008 International Bridge Conference (Pittsburgh: Engineers' Society of Western Pennsylvania) (IBC 08-56).
  9. ↑ Eric Sakowski: List of 500 highest international bridges. Retrieved January 25, 2011 .