Difference between revisions of "Long Bridge"

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龙桥特大桥<br />
 
龙桥特大桥<br />
 
Xuan'en, Hubei, China<br />
 
Xuan'en, Hubei, China<br />
(722) feet high / (220) meters high<br />
+
623 feet high / 190 meters high<br />
 
879 foot span / 268 meter span<br />
 
879 foot span / 268 meter span<br />
2014<br />
+
2015<br />
[[File:LongArchSpan.jpg|750px|center]]
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[[File:LongDroneSide2.jpg|750px|center]]
 
</div>
 
</div>
  
  
Leaping between two cliffs in a densely forested canyon, the Long Bridge makes for a picture perfect scene on the Enshi to Qianjiang expressway that opened in 2014 between Hubei and Chongqing provinces.
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Leaping between two cliffs in a densely forested canyon, the Long Bridge makes for a picture perfect scene on the S89 Enshi to Qianjiang expressway that opened in 2014 between Hubei and Chongqing provinces.
  
 
With a central span of 268 meters, the Long Bridge is another one of China's popular CFST or concrete filled steel tubular arch.  First used in 1990, this is now a popular method to build steel arches throughout China's mountainous west, especially when crossing a deep crevasse or gorge.  
 
With a central span of 268 meters, the Long Bridge is another one of China's popular CFST or concrete filled steel tubular arch.  First used in 1990, this is now a popular method to build steel arches throughout China's mountainous west, especially when crossing a deep crevasse or gorge.  
  
 
The eight large steel tubes that run along the underside of the Long arch were initially hollow. Once the arch was closed, concrete was pumped into these tubes from the bottom up.  Depending on the length of the span and the width of the bridge, different styles of tubing are used. For Long, they adopted an array of single tubes spaced apart from each other. Other configurations include dumbbells with two tubes closely connected, a mix of a dumbbell and single tubes such as was done on the Beipanjiang River Railway bridge or a tight cluster of tubes known as “multiple contiguous”. Once hardened, the concrete solidifies and stiffens the arch, improving the compressive strength of the entire structure.
 
The eight large steel tubes that run along the underside of the Long arch were initially hollow. Once the arch was closed, concrete was pumped into these tubes from the bottom up.  Depending on the length of the span and the width of the bridge, different styles of tubing are used. For Long, they adopted an array of single tubes spaced apart from each other. Other configurations include dumbbells with two tubes closely connected, a mix of a dumbbell and single tubes such as was done on the Beipanjiang River Railway bridge or a tight cluster of tubes known as “multiple contiguous”. Once hardened, the concrete solidifies and stiffens the arch, improving the compressive strength of the entire structure.
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 +
The main span of 268 meters has a span to rise ratio of 5:1.  The two main arch ribs are connected by X braces that are empty steel pipes.  The deck is 24.5 meters wide.
  
 
 
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Long Bridge Elevation<br />
 
Long Bridge Elevation<br />
 
</div>
 
</div>
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[[File:LongArchDrone.jpg|750px|center]]
  
  
 
[[File:LongArchComplete.jpg|750px|center]]
 
[[File:LongArchComplete.jpg|750px|center]]
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 +
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[[File:LongArchSpan.jpg|750px|center]]
  
  
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[[File:Longbridge&Fog.jpg|450px|center]]
 
[[File:Longbridge&Fog.jpg|450px|center]]
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[[File:99LongArchPanorama.jpg|400px|center]]
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Image by Eric Sakowski / HighestBridges.com
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[[File:100LongArchPanoramaWest.jpg|400px|center]]
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Image by Eric Sakowski / HighestBridges.com
  
  
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[[File:LongArchCaves.jpg|750px|center]]
 
[[File:LongArchCaves.jpg|750px|center]]
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Image by Eric Sakowski / HighestBridges.com
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[[File:LongArchBuilding&Waterfalls.jpg|750px|center]]
 
Image by Eric Sakowski / HighestBridges.com
 
Image by Eric Sakowski / HighestBridges.com
  
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[[File:龙桥特大桥2013.jpg|750px|center]]
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[[File:LongCanyonView.jpg|750px|center]]
  
  
[[File:龙桥特大桥Highlines.jpg|450px|center]]
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[[File:LongHighline2.jpg|550px|center]]
  
  
[[File:龙桥特大桥缆索吊机开始试吊.jpg|450px|center]]
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[[File:LongHighlinesView.jpg|550px|center]]
  
  
[[File:龙桥特大桥黔江侧开始架设钢管拱.jpg|450px|center]]
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[[File:LongView.jpg|550px|center]]
  
  
[[File:龙桥特大桥Pieces.jpg|750px|center]]
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[[File:LongPieces.jpg|750px|center]]
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[[File:LongRedPieces.jpg|750px|center]]
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[[File:LongArchSatelliteNew.jpg|750px|center]]
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Long Bridge satellite image.
  
  
 
[[File:LongBridgeSatellite&Bridge.jpg|750px|center]]
 
[[File:LongBridgeSatellite&Bridge.jpg|750px|center]]
Long Bridge satellite image.
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Long Bridge satellite image before construction began.
  
  

Revision as of 20:38, 13 June 2022

Long Bridge
龙桥特大桥
Xuan'en, Hubei, China
623 feet high / 190 meters high
879 foot span / 268 meter span
2015

LongDroneSide2.jpg


Leaping between two cliffs in a densely forested canyon, the Long Bridge makes for a picture perfect scene on the S89 Enshi to Qianjiang expressway that opened in 2014 between Hubei and Chongqing provinces.

With a central span of 268 meters, the Long Bridge is another one of China's popular CFST or concrete filled steel tubular arch. First used in 1990, this is now a popular method to build steel arches throughout China's mountainous west, especially when crossing a deep crevasse or gorge.

The eight large steel tubes that run along the underside of the Long arch were initially hollow. Once the arch was closed, concrete was pumped into these tubes from the bottom up. Depending on the length of the span and the width of the bridge, different styles of tubing are used. For Long, they adopted an array of single tubes spaced apart from each other. Other configurations include dumbbells with two tubes closely connected, a mix of a dumbbell and single tubes such as was done on the Beipanjiang River Railway bridge or a tight cluster of tubes known as “multiple contiguous”. Once hardened, the concrete solidifies and stiffens the arch, improving the compressive strength of the entire structure.

The main span of 268 meters has a span to rise ratio of 5:1. The two main arch ribs are connected by X braces that are empty steel pipes. The deck is 24.5 meters wide.



Long Bridge Elevation


LongArchDrone.jpg


LongArchComplete.jpg


LongArchSpan.jpg


LongArchProbably.jpg


LongBridgeSky.jpg


LongArch.jpg

Image by Eric Sakowski / HighestBridges.com


Longbridge&Fog.jpg


99LongArchPanorama.jpg

Image by Eric Sakowski / HighestBridges.com


100LongArchPanoramaWest.jpg

Image by Eric Sakowski / HighestBridges.com


LongArchView.jpg

Image by Eric Sakowski / HighestBridges.com


LongArchBase.jpg

Image by Eric Sakowski / HighestBridges.com


LongArchCaves.jpg

Image by Eric Sakowski / HighestBridges.com


LongArchBuilding&Waterfalls.jpg

Image by Eric Sakowski / HighestBridges.com


LongArchElevation.jpg

Long Bridge construction highline elevation.


LongArch3.jpg

Image by Eric Sakowski / HighestBridges.com


LongArchRichardBruce.jpg

Image by Eric Sakowski / HighestBridges.com


LongArchTemporaryTower.jpg

Image by Eric Sakowski / HighestBridges.com


LongArchElevationLeft.JPG


LongArchTemporarySupport.jpg

Image by Eric Sakowski / HighestBridges.com


LongBridgeCableStays.jpg


LongBridgeArchView.jpg


LongBridgeEnshi.jpg


LongBridgeHighlines.jpg


LongBridgeNets.jpg


LongByCnBridge.jpg


LongByCnBridge2.jpg


LongByCnBridge3.jpg


LongCanyonView.jpg


LongHighline2.jpg


LongHighlinesView.jpg


LongView.jpg


LongPieces.jpg


LongRedPieces.jpg


LongArchSatelliteNew.jpg

Long Bridge satellite image.


LongBridgeSatellite&Bridge.jpg

Long Bridge satellite image before construction began.


LongLocationMap.jpg

Long Bridge location map.


LongLocationMapWide.jpg