Long Bridge

From HighestBridges.com
Revision as of 10:00, 15 February 2014 by Sakowski (talk | contribs)
Jump to navigationJump to search

Long Bridge
龙桥特大桥
Xuan'en, Hubei, China
(722) feet high / (220) meters high
879 foot span / 268 meter span
2014

LongArchSpan.jpg


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.

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.



Long Bridge Elevation


LongArchComplete.jpg


LongArchProbably.jpg


LongBridgeSky.jpg


LongArch.jpg

Image by Eric Sakowski / HighestBridges.com


Longbridge&Fog.jpg


LongArchView.jpg

Image by Eric Sakowski / HighestBridges.com


LongArchBase.jpg

Image by Eric Sakowski / HighestBridges.com


LongArchCaves.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







LongBridgeSatellite&Bridge.jpg

Long Bridge satellite image.


LongLocationMap.jpg

Long Bridge location map.


LongLocationMapWide.jpg