Heishigou Bridge - Revision history

Sakowski at 01:09, 4 January 2023

2023-01-04T01:09:06Z

Sakowski at 04:02, 12 February 2022

2022-02-12T04:02:38Z

Sakowski at 01:28, 12 February 2022

2022-02-12T01:28:56Z

Sakowski at 08:55, 25 January 2015

2015-01-25T08:55:40Z

Sakowski at 10:55, 17 June 2013

2013-06-17T10:55:01Z

Sakowski at 11:03, 16 June 2013

2013-06-16T11:03:40Z

Sakowski at 11:02, 16 June 2013

2013-06-16T11:02:37Z

Sakowski at 10:59, 16 June 2013

2013-06-16T10:59:28Z

Sakowski at 10:54, 16 June 2013

2013-06-16T10:54:23Z

Sakowski at 10:50, 16 June 2013

2013-06-16T10:50:19Z

@@ Line 12: / Line 12: @@
 A sister bridge to the nearby Labajin crossing, the similarly designed Heishigou Bridge also uses a unique concrete pier design that the Chinese developed for just 3 large bridges on the Yaxi highway.  The third bridge to use this first-ever technique is the Tangjiawan Bridge.
 Although the two main piers of Heishigou Bridge are not as tall as those on Labajin, they are still among the world's tallest at 155 meters.  The concept behind the SRC or steel reinforced concrete column is to combine the shear-wall strength of concrete but retain steel tubes for cross bracing and to maintain the skeletal strength of the piers to meet seismic requirements of bending and flexibility.  The optimum height level for each concrete pier section was 12 meters which was partly determined by the weight of a 12 meter steel column which has a weight of 30 tons.  The concrete is placed on both the outside and inside of the steel tubes making for a steel and concrete sandwich.  At each 12 meter interval there is a flat concrete deck that gives the 4 walls rigidity.  The two parallel piers are 13.8 meters by 6.8 meters at the base and taper to 10 by 6.8 meters at the cap.  The 5.6 meter gap between the two parallel piers are connected by steel truss tubes.
 The G5 Yaxi highway also has several impressive tunnels including the 10 kilometer long Daxiangling mud mountain tunnel with a maximum depth of 1650 meters with more then 5 kilometers of that length over 1000 meters deep.

@@ Line 77: / Line 77: @@
 [[File:LabajinSatelliteWide.jpg|750px|center]]
-Satellite view of Heishigou, Labajin and Shizijinghe Bridges on the G5 expressway.  Not shown is the Tangjiawan Bridge further to the south which also uses the unique steel reinforced concrete column tubes.  The Shizijinghe Bridge was built with conventional concrete-only piers that are on nearly every other high beam bridge in China.
+Satellite view of Heishigou, Labajin and Shizijinghe Bridges on the G5 expressway.  Not shown is the Tangjiawan Bridge further to the south which also uses the unique steel reinforced concrete column tubes.
 [[File:LabajinLocationMap.jpg|750px|center]]
-Location map of Heishigou, Labajin and Shizijinghe Bridges.  Tangjiawan Bridge is just off the map to the south.
+Heishigou Bridge location map.

@@ Line 67: / Line 67: @@
 [[File:182.5PierFoundation.jpg|750px|center]]
 The base of Labajin Bridge which uses the same exact pier design as Heishigou Bridge with steel tubes at all 4 corners.
 [[File:HeishigouSatellite.jpg|750px|center]]

← Older revision		Revision as of 08:55, 25 January 2015
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	[[File:YaxiExpswyHeishigouBridge.jpg\|750px\|center]]		[[File:YaxiExpswyHeishigouBridge.jpg\|750px\|center]]
		+
		+
		+	[[File:HeishiagouWide.jpg\|750px\|center]]

@@ Line 12: / Line 12: @@
 A sister bridge to the nearby Labajin crossing, the similarly designed Heishigou Bridge also uses a unique concrete pier design that the Chinese developed for just 3 large bridges on the Yaxi highway.  The third bridge to use this first-ever technique is the Tangjiawan Bridge.
-Although the two main piers of Heishigou Bridge are not as tall as those on Labajin, they are still among the world's tallest at 155 meters.  The concept behind the SRC or steel reinforced concrete column is to combine the shear-wall strength of concrete but retain steel tubes for cross bracing and maintain the skeletal strength of the piers to meet seismic requirements of bending and flexibility.  The optimum height level for each concrete pier section was 12 meters which was partly determined by the weight of a 12 meter steel column which has a weight of 30 tons.  The concrete is placed on both the outside and inside of the steel tubes making for a steel and concrete sandwich.  At each 12 meter interval there is a flat concrete deck that gives the 4 walls rigidity.  The two parallel piers are 13.8 meters by 6.8 meters at the base and taper to 10 by 6.8 meters at the cap.  The 5.6 meter gap between the two parallel piers are connected by steel truss tubes.
+Although the two main piers of Heishigou Bridge are not as tall as those on Labajin, they are still among the world's tallest at 155 meters.  The concept behind the SRC or steel reinforced concrete column is to combine the shear-wall strength of concrete but retain steel tubes for cross bracing and to maintain the skeletal strength of the piers to meet seismic requirements of bending and flexibility.  The optimum height level for each concrete pier section was 12 meters which was partly determined by the weight of a 12 meter steel column which has a weight of 30 tons.  The concrete is placed on both the outside and inside of the steel tubes making for a steel and concrete sandwich.  At each 12 meter interval there is a flat concrete deck that gives the 4 walls rigidity.  The two parallel piers are 13.8 meters by 6.8 meters at the base and taper to 10 by 6.8 meters at the cap.  The 5.6 meter gap between the two parallel piers are connected by steel truss tubes.
 The G5 Yaxi highway also has several impressive tunnels including the 10 kilometer long Daxiangling mud mountain tunnel with a maximum depth of 1650 meters with more then 5 kilometers of that length over 1000 meters deep.

← Older revision		Revision as of 11:03, 16 June 2013
Line 75:		Line 75:

	[[File:LabajinLocationMap.jpg\|750px\|center]]		[[File:LabajinLocationMap.jpg\|750px\|center]]
−	Location map of Heishigou, Labajin and Shizijinghe Bridges.	+	Location map of Heishigou, Labajin and Shizijinghe Bridges. Tangjiawan Bridge is just off the map to the south.

← Older revision		Revision as of 11:02, 16 June 2013
Line 71:		Line 71:

	[[File:LabajinSatelliteWide.jpg\|750px\|center]]		[[File:LabajinSatelliteWide.jpg\|750px\|center]]
−	Satellite view of Heishigou, Labajin and Shizijinghe Bridges on the G5 expressway.	+	Satellite view of Heishigou, Labajin and Shizijinghe Bridges on the G5 expressway. Not shown is the Tangjiawan Bridge further to the south which also uses the unique steel reinforced concrete column tubes. The Shizijinghe Bridge was built with conventional concrete-only piers that are on nearly every other high beam bridge in China.

← Older revision		Revision as of 10:59, 16 June 2013
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	[[File:HeishigouCrossSec.jpg\|500px\|center]]		[[File:HeishigouCrossSec.jpg\|500px\|center]]
		+
		+
		+	[[File:LabajinTower 001.jpg\|750px\|center]]
		+	Drawings of the unique pier frame design.


Line 56:		Line 60:

	[[File:HeishigouPierBaseImage.jpg\|750px\|center]]		[[File:HeishigouPierBaseImage.jpg\|750px\|center]]
		+
		+
		+	[[File:182.5PierFoundation.jpg\|750px\|center]]
		+	The base of Labajin Bridge which uses the same exact pier design as Heishigou Bridge with steel tubes at all 4 corners.

@@ Line 32: / Line 32: @@
-[[File:Heishigou黑石沟大桥200mtrSpan.jpg|450px|center]]
+[[File:Heishigou黑石沟大桥200mtrSpan.jpg|750px|center]]
@@ Line 45: / Line 45: @@
-[[File:HeishigouCrossSec.jpg|750px|center]]
+[[File:HeishigouCrossSec.jpg|500px|center]]
@@ Line 68: / Line 68: @@
 [[File:LabajinLocationMap.jpg|750px|center]]
 Location map of Heishigou, Labajin and Shizijinghe Bridges.
@@ Line 112: / Line 76: @@
 [[File:YaxiHwyMap.jpg|450px|center]]
 [[Category:Bridges in China]]

@@ Line 1: / Line 1: @@
 <div style="font-size: 25px; text-align: center;">
 Heishigou Bridge<br />
-黑石沟大桥<br />
+黑石沟特大桥<br />
 Yingjing, Sichuan, China<br />
 feet high / 190 meters high<br />
 foot span / 200 meter span<br />
 <br />
-[[File:Labajin2011.jpg|750px|center]]
+[[File:Heishigou190mtrH.jpg|750px|center]]
 </div>
-A sister bridge to the nearby Labajin crossing, the similarly designed Heishigou Bridge also uses a unique concrete.....pier design that the Chinese developed for just 3 bridges on the Yaxi highway.  The third bridge to use this first-ever technique is the Tangjiawan Bridge.
+A sister bridge to the nearby Labajin crossing, the similarly designed Heishigou Bridge also uses a unique concrete pier design that the Chinese developed for just 3 large bridges on the Yaxi highway.  The third bridge to use this first-ever technique is the Tangjiawan Bridge.
-Although the two main piers of Heishigou Bridge are not as tall as those on Labajin, they are still among the world's tallest at 155 meters.  The concept behind the SRC or steel reinforced concrete column is to combine the shear-wall strength of concrete but retain steel tubes for cross bracing and maintaining the skeleton strength of the piers to meet seismic requirements of bending and flexibility.  The optimum height level for each concrete pier section was 12 meters which was partly determined by the weight of a 12 meter steel column which has a weight of 30 tons and could be raised in 4 section of 7.1 tons each.  The concrete is placed on both the outside and inside of the steel tubes making for a steel and concrete sandwich tube.  At each 12 meter interval there is a flat concrete deck that gives the 4 walls rigidity.  The two parallel piers are 13.8 meters by 6.8 meters at tbe base and taper to 10 by 6.8 meters at the cap.  The 5.6 meter gap between the two parallel piers are connected by steel truss tubes.
+Although the two main piers of Heishigou Bridge are not as tall as those on Labajin, they are still among the world's tallest at 155 meters.  The concept behind the SRC or steel reinforced concrete column is to combine the shear-wall strength of concrete but retain steel tubes for cross bracing and maintain the skeletal strength of the piers to meet seismic requirements of bending and flexibility.  The optimum height level for each concrete pier section was 12 meters which was partly determined by the weight of a 12 meter steel column which has a weight of 30 tons.  The concrete is placed on both the outside and inside of the steel tubes making for a steel and concrete sandwich.  At each 12 meter interval there is a flat concrete deck that gives the 4 walls rigidity.  The two parallel piers are 13.8 meters by 6.8 meters at the base and taper to 10 by 6.8 meters at the cap.  The 5.6 meter gap between the two parallel piers are connected by steel truss tubes.
 <div style="text-align: center; font-size: 25px;">
-[[File:LabajinElevFinal.jpg|750px|center]]<br />
+[[File:HeishigouElevFinal.jpg|750px|center]]<br />
-Labajin Bridge Elevation<br />
+Heishigou Bridge Elevation<br />
 </div>
-You can see a video of the bridge and highway project here: http://v.youku.com/v_show/id_XMTQwMTM2ODI4.html
+[[File:HeishigouConstruction.jpg|750px|center]]
+[[File:HeishigouSatellite.jpg|750px|center]]
-[[File:182.5ComputerImage.jpg|750px|center]]
+Heishigou Bridge satellite image.
-[[File:182.5BridgePIer.jpg|750px|center]]
+[[File:LabajinSatelliteWide.jpg|750px|center]]
+Satellite view of Heishigou, Labajin and Shizijinghe Bridges on the G5 expressway.
 [[File:LabajinBridgeConstruction2.jpg|450px|center]]