Zhenzhu Bridge - Revision history

Sakowski at 01:38, 11 October 2022

2022-10-11T01:38:20Z

2022-08-12T02:48:02Z

2019-02-28T07:50:03Z

2019-02-28T07:40:45Z

2015-01-29T07:18:05Z

2013-06-18T10:45:14Z

2013-06-18T10:35:36Z

2013-06-18T10:34:36Z

2013-06-18T10:31:52Z

2013-06-18T10:15:39Z

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 The difficult location required the engineers to build the two halves of the arch vertically on hinges before lowering them down where they were joined at the crown.  The rotating hinge is set at the arch foundation and then a half span 62 meters is poured vertically.  The mass of the half side box is 610 tons and a 4 meter closure gap is left open in the arch crown.
-Zhenzhu was built along the X350 road that was needed to avoid the new reservoir forming below the bridge from a downstream dam.  The main rib arch rise is just 17.1 meters making for a shallow span to rise ratio of 7 to 1.  The single box, three chamber concrete rib is 10 meters wide and 2.1 meters thick.
+Zhenzhu was built along the X350 road that was needed to avoid the new reservoir forming below the bridge from a downstream dam.  The main rib arch rise is just 17.1 meters making for a shallow span to rise ratio of 7 to 1.  The single box, three chamber concrete rib is 10 meters wide and 2.1 meters thick.  The deck is 12.5 meters wide.
 Originally the first attempt to construct an arch across the gorge ended in tragedy on November 5, 2005 when the truss support of the concrete arch collapsed killing 16 workers.

@@ Line 12: / Line 12: @@
 A simple but beautifully proportioned concrete arch bridge, Zhenzhu is part of a new group of mid-sized concrete arch bridges in Western China.
-The difficult location required the engineers to build the two halves of the arch vertically on hinges before lowering them down where they were joined at the crown.  Zhenzhu was built on a new bypass road that avoids the older descent into the river gorge.
+The difficult location required the engineers to build the two halves of the arch vertically on hinges before lowering them down where they were joined at the crown.  The rotating hinge is set at the arch foundation and then a half span 62 meters is poured vertically.  The mass of the half side box is 610 tons and a 4 meter closure gap is left open in the arch crown.
 Originally the first attempt to construct an arch across the gorge ended in tragedy on November 5, 2005 when the truss support of the concrete arch collapsed killing 16 workers.

@@ Line 92: / Line 92: @@
-[[File:ZhenzhuLocationMap.jpg|750px|center]]
+[[File:WuchuanBridgesLocationMap.jpg|750px|center]]
 Zhenzhu Bridge location map.
 [[Category:Bridges in China]]

@@ Line 14: / Line 14: @@
 The difficult location required the engineers to build the two halves of the arch vertically on hinges before lowering them down where they were joined at the crown.  Zhenzhu was built on a new bypass road that avoids the older descent into the river gorge.
 Originally the first attempt to construct an arch across the gorge ended in tragedy on November 5, 2005 when the truss support of the concrete arch collapsed killing 16 workers.
@@ Line 42: / Line 82: @@
 [[File:WuchuanNov5,2005Collapse16WorkersDied.jpg|750px|center]]
 The remains of the collapsed steel truss arch support lie at the bottom of the canyon in 2005.

@@ Line 12: / Line 12: @@
 A simple but beautifully proportioned concrete arch bridge, Zhenzhu is part of a new group of mid-sized concrete arch bridges in Western China.
 The difficult location required the engineers to build the two halves of the arch vertically on hinges before lowering them down where they were joined at the crown.  Zhenzhu was built on a new bypass road that avoids the older descent into the river gorge.
@@ Line 36: / Line 38: @@
 [[File:ZhenzhuNearWuchuanGuizhou.jpg|750px|center]]

@@ Line 40: / Line 40: @@
 [[File:ZhenzhuSatellite.jpg|750px|center]]
 A satellite view showing the Zhenzhu Bridge under construction towards the right.
 [[Category:Bridges in China]]

← Older revision		Revision as of 10:35, 18 June 2013
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	[[File:Zhenzhu2008Open112mtrH.jpg\|450px\|center]]		[[File:Zhenzhu2008Open112mtrH.jpg\|450px\|center]]
		+	Image by www.gog.com.cn.

@@ Line 22: / Line 22: @@
-[[File:Zhenzhu2008Open112mtrH.jpg|750px|center]]
+[[File:Zhenzhu2008Open112mtrH.jpg|450px|center]]
@@ Line 37: / Line 37: @@
-[[File:SZhenzhuSatellite.jpg|750px|center]]
+[[File:ZhenzhuSatellite.jpg|750px|center]]
 A satellite view showing the Zhenzhu Bridge under construction towards the right.
 [[Category:Bridges in China]]

@@ Line 6: / Line 6: @@
 foot span / 120 meter span<br />
 <br />
-[[File:Zhen.JPG|750px|center]]
+[[File:ZhenzhuView135mtrLong.jpg|750px|center]]
 </div>
@@ Line 15: / Line 15: @@
-[[File:Shizijinghe石滓经河大桥Bywwwqqbque.jpg|750px|center]]
+[[File:ZhenzhuConst2.jpg|750px|center]]
-[[File:Shizijinghe石滓经河大桥3 × 30 + (74 +140 +74) +7 × 30 m..jpg|750px|center]]
+[[File:ZhenzhuCableStays.jpg|750px|center]]
-A computer rendering of the finished span.
+Diagram showing the stays that held the arch half in place before it was lowered down over the canyon.
-[[File:Shizijinghe石滓经河大桥140mtrSpan98mtrPier.jpg|750px|center]]
+[[File:Zhenzhu2008Open112mtrH.jpg|750px|center]]
-[[File:ShizijingheRendering.jpg|750px|center]]
+[[File:ZhenzhuCrossesChaxihe.jpg|750px|center]]
-[[File:Shizijinghe石滓经河大桥.jpg|750px|center]]
+[[File:ArchChina5.jpg|750px|center]]
-[[File:YaxiExpresswayMap.jpg|750px|center]]
+[[File:ZhenzhuJoinsFengleheToLongtanghe.jpg|750px|center]]
-[[File:ShizijingheSatellite.jpg|750px|center]]
+[[File:ZhenzhuNearWuchuanGuizhou.jpg|750px|center]]
-A satellite view showing the Shizijinghe Bridge under construction.
 [[Category:Bridges in China]]

← Older revision		Revision as of 10:15, 18 June 2013
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−	A simple but beautifully proportioned concrete arch bridge, Zhenzhu is part of a new group of mid-sized concrete arch ~~bridge~~.	+	A simple but beautifully proportioned concrete arch bridge, Zhenzhu is part of a new group of mid-sized concrete arch bridges in Western China.

	The difficult location required the engineers to build the two halves of the arch vertically on hinges before lowering them down where they were joined at the crown. Zhenzhu was built on a new bypass road that avoids the older descent into the river gorge.		The difficult location required the engineers to build the two halves of the arch vertically on hinges before lowering them down where they were joined at the crown. Zhenzhu was built on a new bypass road that avoids the older descent into the river gorge.