Daduhe Bridge Xingkang - Revision history

Sakowski at 10:18, 28 February 2024

2024-02-28T10:18:31Z

Sakowski at 07:07, 19 December 2023

2023-12-19T07:07:49Z

Sakowski at 02:33, 9 March 2023

2023-03-09T02:33:33Z

Sakowski at 02:33, 9 March 2023

2023-03-09T02:33:04Z

Sakowski at 02:35, 18 May 2022

2022-05-18T02:35:26Z

Sakowski at 02:16, 11 February 2022

2022-02-11T02:16:52Z

Sakowski at 00:25, 10 February 2022

2022-02-10T00:25:33Z

Sakowski at 05:22, 13 August 2019

2019-08-13T05:22:54Z

Sakowski at 02:58, 13 August 2019

2019-08-13T02:58:19Z

Sakowski at 11:38, 18 April 2019

2019-04-18T11:38:28Z

← Older revision		Revision as of 10:18, 28 February 2024
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	[[File:XingkangProposal.jpg\|750px\|center]]		[[File:XingkangProposal.jpg\|750px\|center]]
	An early Daduhe Bridge Xingkang cable stayed proposal.		An early Daduhe Bridge Xingkang cable stayed proposal.
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		+	[[File:DaduheLudingCrossingProposals.jpg\|750px\|center]]
		+	Daduhe Bridge Xingkang crossing proposal locations.

← Older revision		Revision as of 07:07, 19 December 2023
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−	[[File:Daduhe Bridge XingkangTowerDownView.jpg\|750px\|center]]	+	[[File:Daduhe Bridge XingkangTowerDownView.jpg\|750px\|center]]
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		+	[[File:DaduheLudingSuspensionTowerCorrugated.jpg\|750px\|center]]

← Older revision		Revision as of 02:33, 9 March 2023
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−	[[File:~~Daduhe Bridge XingkangRed~~.jpg\|750px\|center]]	+	[[File:LushuiExpresswayInterchange.jpg\|750px\|center]]
	The Lushui Expressway interchange opened in 2024 allowing travelers to go south towards Shimian and the G5 Expressway.		The Lushui Expressway interchange opened in 2024 allowing travelers to go south towards Shimian and the G5 Expressway.

← Older revision		Revision as of 02:33, 9 March 2023
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	[[File:XingkangDroneRiver.jpg\|750px\|center]]		[[File:XingkangDroneRiver.jpg\|750px\|center]]
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		+	[[File:Daduhe Bridge XingkangRed.jpg\|750px\|center]]
		+	The Lushui Expressway interchange opened in 2024 allowing travelers to go south towards Shimian and the G5 Expressway.

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 Located at kilometer 99, the alignment chosen for the Daduhe Bridge resulted in an unusual design for the east end where the anchorages had to be placed high up inside the steep mountain slope.  To avoid compromising the strength of the deep underground anchorage, the engineers split the east-west lanes apart into tunnels separated by more then 100 meters, keeping the alignment off to the sides of the cable anchorage.  The deck of the Daduhe Bridge is approximately 235 meters above the full lake level or 285 meters to the original level of the Dadu River.
-The main cable has a 9.5:1 span to rise ratio with a diameter of 77 centimeters composed of 187 strands.  Each strand has 91 parallel 5.3mm steel wires.  The truss has a depth of 8.2 meters which makes for a width-to-span ratio of 1:40.7 and a height-to-span ratio of 134:1.  The deck is supported by towers 188 meters tall.
+The main cable has a 9.5:1 span to rise ratio with a diameter of 77 centimeters composed of 187 strands.  Each strand has 91 parallel 5.3mm steel wires.  The truss has a depth of 8.2 meters which makes for a width-to-span ratio of 1:40.7 and a height-to-span ratio of 134:1.  The deck is supported by towers 188 meters tall.  The exposed gravity anchor on the Kangding side has dimensions of 85 x 60 x 56 meters.
 The construction of the truss will follow an unusual pattern first implemented on the Aizhai Bridge in Hunan Province where each truss piece will be pulled and rolled along with wheel bogies that travel along horizontal wires hanging from the suspender cables.  The 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.

@@ Line 10: / Line 10: @@
-Crossing a wide reservoir from a downstream dam just north of Luding city, the giant Daduhe suspension bridge is the largest structure on the Ya'an to Kangding expressway.  Like many of China's Westernmost highways, this extension from the G5 expressway came many years after the more populous cities had already been connected in northern and eastern Sichuan Province.  The Kanding route was especially difficult to construct with an amazing 82% of the road on bridges or in tunnels.
+Crossing a wide reservoir from a downstream dam just north of Luding city, the giant Daduhe suspension bridge is the largest structure on the G4218 Ya'an to Kangding Expressway.  Like many of China's Westernmost highways, this extension from the G5 expressway came many years after the more populous cities had already been connected in northern and eastern Sichuan Province.  The Kanding route was especially difficult to construct with an amazing 82% of the road on bridges or in tunnels.
-Located at kilometer 99, the alignment chosen for the Daduhe Bridge resulted in an unusual design for the east end where the anchorages had to be placed high up inside the steep mountain slope.  To avoid compromising the strength of the deep underground anchorage, the engineers split the east-west lanes apart into tunnels separated by more then 100 meters, keeping the alignment off to the sides of the cable anchorage.  The deck of the Daduhe Bridge is approximately 235 meters above the full lake level or 285 meters to the original level of the Dadu River.  The main cable has a 9.5:1 span to rise ratio.
+Located at kilometer 99, the alignment chosen for the Daduhe Bridge resulted in an unusual design for the east end where the anchorages had to be placed high up inside the steep mountain slope.  To avoid compromising the strength of the deep underground anchorage, the engineers split the east-west lanes apart into tunnels separated by more then 100 meters, keeping the alignment off to the sides of the cable anchorage.  The deck of the Daduhe Bridge is approximately 235 meters above the full lake level or 285 meters to the original level of the Dadu River.
 The construction of the truss will follow an unusual pattern first implemented on the Aizhai Bridge in Hunan Province where each truss piece will be pulled and rolled along with wheel bogies that travel along horizontal wires hanging from the suspender cables.  The 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.

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 [[File:DaduheLudingChain33.jpg|750px|center]]
 Image by Eric Sakowski / HighestBridges.com
 [[File:DaduheLudingSatellite&Bridge.jpg|750px|center]]

← Older revision		Revision as of 05:22, 13 August 2019
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	[[File:Daduhe Bridge XingkangDrone7.jpg\|750px\|center]]		[[File:Daduhe Bridge XingkangDrone7.jpg\|750px\|center]]
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		+	[[File:XingkangDroneRiver.jpg\|750px\|center]]
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		+	[[File:XingkangTowerTopDrone.jpg\|750px\|center]]
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		+	[[File:XingkangDownDeckView.jpg\|750px\|center]]
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		+	[[File:XingkangTrussDroneSide.jpg\|750px\|center]]

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 <div style="text-align: center; font-size: 25px;">
-[[File:DaduheLudingElevationFinal.jpg|750px|center]]<br />
+[[File:DaduheLudingElevationFinal.jpg|900px|center]]<br />
 Daduhe Xingkang Bridge Elevation<br />
 </div>

← Older revision		Revision as of 11:38, 18 April 2019
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	该桥钢桁梁使用轨索滑移法吊装，这种方法首次应用于湖南矮寨大桥，参见：		该桥钢桁梁使用轨索滑移法吊装，这种方法首次应用于湖南矮寨大桥，参见：
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		+	[[File:Daduhe Bridge XingkangDrone7.jpg\|750px\|center]]
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		+	[[File:Daduhe Bridge XingkangDrone8.jpg\|750px\|center]]
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		+	[[File:Daduhe Bridge XingkangRedCables.jpg\|750px\|center]]
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		+	[[File:Daduhe Bridge XingkangTowerDrone.jpg\|750px\|center]]
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		+	[[File:Daduhe Bridge XingkangWater.jpg\|750px\|center]]
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		+	[[File:Daduhe Bridge XingkangCablesDrone.jpg\|750px\|center]]