Aizhai Bridge/Page 2

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This entry has 4 pages: 1 | 2 | 3 | 4


AizhaiBrochure1.jpg

Aizhai Bridge brochure.


AizhaiBrochure2.jpg

Aizhai Bridge brochure.


AizhaiAvatarCanyon.jpg

Looking like a scene from the movie Avatar, the deep canyon dwarfs the north tower in the upper left.


AizhaiBridgeView.jpg

The view from the north side with the short tower shows the taller south tower halfway complete on the far side of the canyon. Image by www.smxxsy.com


AizhaiShortTower2.jpg


AizhaiShortTower.jpg


AizhaiFoundations.jpg


AizhaiRenderinfg.jpg

An early Aizhai computer rendering. In the final design, the taller tower has a horizontal cross brace with more ordinary antenna-like tower tops. The tunnel was also changed and does not extend under the taller tower.


AizhaiTowerDesigns.jpg

Several Aizhai bridge tower designs.

AizhaiAnchorage.jpg

One of the cable anchorages located on the back side of the mountain range.



AizhaiAnchorage3.jpg

The wire bundles are connected to a deep underground concrete wall.


AizhaiRoad.jpg


AizhaiWindTests.jpg

Aizhai valley wind test model.


600mtrAizhaiArchProposalElevation.jpg

An early proposal for a concrete arch. The 600 meter arch span would have been the world's largest.


600mtrAizhaiArchProposalConstruction.jpg


600mtrAizhaiArchProposalTruss.jpg


AizhaiAnchorage2.jpg

Note how close the foliage is to the back span cables.


AizhaiCatwalk2.jpg


AizhaiCatwalk&Clouds.jpg


AizhaiBackSpan.jpg


AizhaiTunnels.jpg

The tunnel entrances beneath the tall tower.


AizhaiCableView2.JPG

One of the cables sagged down into the gorge during the early process of setting up the catwalks. The Chinese workers quickly freed up the cable and hoisted it out of the valley.

You can view a video here of the preparation to use a small blimp to take the first pilot line across. http://bbs.rednet.cn/thread-22618784-1-1.html


AizhaiCableView.JPG


AizhaiCableView4.JPG


AizhaiCableView6.JPG

The hanging cable reveals just how high up the rock face scaffolding is below the south tower.


AizhaiCableView7.JPG


AizhaiConstView3.JPG


AizhaiCables5.jpg


AizhaiCables.jpg

The catwalks were in place by mid-2010.


AizhaiCableSpinning.jpg


AizhaiCableSpinning2.jpg


AizhaiCableSpinning3.jpg


AizhaiCablesComplete4.jpg

The wires are always grouped into hexagon shaped bundles that fit together within the larger main cable like the pieces to a puzzle.

AizhaiCableSpinning&Gorge.jpg


AizhaiCablesComplete.jpg

The main cables were completed in the fall of 2010.


AizhaiCableBundles.jpg


AizhaiCablesComplete2.jpg


AizhaiCablesComplete3.jpg


AizhaiCableClamp.jpg


AizhaiCableClouds.jpg


AizhaiNight.jpg


AizhaiNight3.jpg


AizhaiNightCables.jpg


AizhaiCableNightView.jpg


AizhaiNightConstruction.jpg


AizhaiNightSide.jpg


AizhaiConstProcess.jpg

A large model was created to show the unique process where the truss sections will be pulled and rolled along hanging cables with wheel bogies attached to them.


AizhaiModelTruss.jpg


AizhaiConstProcess2.jpg

One of the massive bogies especially designed to pull the suspended truss sections out over the gorge.


A test section was set up for the traveling bogies. The temporary supports simulate the stringer intervals where the bogies will travel on cables that are connected to the ends of the stringers.


AizhaiBogie.jpg


AizhaiBogie2.jpg


AizhaiBogie4.jpg


AizhaiWheelBogieView2.jpg

In the above view you can see the process where the suspended truss sections roll along horizontal cables connected to the vertical suspender cables. The large green beam is a crane whose only function is to raise each truss section several meters into place. The yellow wheel bogies travel back to the cliff side staging area to carry another truss section out and the process repeats until the truss is completed. This complex and experimental system was used for the first time ever on Aizhai.


AizhaiWheelBogieView.jpg


AizhaiDeckMove3.jpg

A diagrams shows how the truss is rolled over cables before eventually being raised into place by the green crane that is not shown here. The design may also have been modified as the wheel bogies roll over the blocks at the bottom of each suspender yet the diagram shows the truss below these blocks as well as being pulled along by cables attached to the truss.


AizhaiStringerGuys.jpg


AizhaiRollers.jpg

The large blue assemblies that hung from each group of suspenders. Four temporary horizontal cables ran over each of the saddles creating a solid group of wires for the truss rollers to travel over. With rollers suspended on each side there was a total of 8 horizontal wires.


AizhaiDeckMove4.jpg

The above drawing shows how the truss is raised into position by the green crane that rolls along on the 2 main suspension cables. This crane is only used to raise the truss sections and does not move them horizontally.


AizhaiRollingTrussView.jpg

Image by www.voc.com.cn.


AizhaiRollersDiagram.jpg

The yellow truss roller assemblies that traveled along the four temporary horizontal cables on each side of the bridge.


AizhaiNets.jpg


AizhaiTrussRollers.jpg


TrussInstallation.jpg


TrussLifting.jpg


AizhaiTrussLifting2.jpg


AizhaiTruss&Town.jpg


TrussMoveCables.jpg


AizhaiSuspenderDesign.jpg

Suspender cables on both sides of the bridge are anchored into the ground due to the large distance between the last suspended section of truss deck and the main towers. Several designs were studied before they opted for a simple vertical, ground anchored suspender as shown in proposal 4.


AizhaiRendering.jpg

The most recent rendering showing the final design with pointed ornamentation on the tower tops.


AizhaiBridgeDrawing.jpg


AizhaiBridgeImage3.jpg


AizhaiBridgeImage2.jpg


AizhaiBridgeImage.jpg


AizhaiDrawing.jpg

An earlier drawing showing a blue pin stripe paint scheme.


AizhaiAreaMap.jpg

Map of the new highway northwest of Jishou.


AizhaiPaths.jpg

A map showing the various Aizhai bridge routes and proposals that were studied. The final route that was chosen is located midway between the red and blue routes.


AizhaiProposals.jpg

Several elevation proposals were studied for half a dozen different routes. You can double click on the image to see it more clearly.


AizhaiProp1.jpg

Aizhai bridge proposal 1 would have required an unusually long main span of 1,300 meters and a lengthy side span but both towers would have been short.


AizhaiPropC.jpg

Proposal C would have had a main span of just 1,100 meters and is similar to the final design.


AizhaiPropM.jpg

Proposal M would have had a main span of 1,228 meters but required a tower almost 200 meters high as well as an anchorage resting on a steep mountain slope.


AizhaiPropQ.jpg

Proposal Q is very similar to the final design but with a slightly shorter main span of 1,128 meters.


AizhaiRoyalGorge.jpg

Aizhai and Royal Gorge bridge size comparison


AizhaiBalance2013.jpg


AizhaiBalanceGuy.jpg


AizhaiBalanceMan.jpg


AizhaiArtist.jpg


AizhaiArtist2013.jpg


AizhaiBalancer.jpg


AizhaiBalloonArtist.jpg


Click on Page 3 for the Aizhai 2012 BASE jump event!

This entry has 4 pages: 1 | 2 | 3 | 4
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