Longdong No. 1 Bridge on the Yunxian to Lincang Expressway in Yunnan Province
Longdong No. 1 Bridge on the Yunxian to Lincang Expressway in Yunnan Province
Longdong No. 1 Bridge on the Yunxian to Lincang Expressway in Yunnan Province
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  • Longdong No. 1 Bridge on the Yunxian to Lincang Expressway in Yunnan Province
  • Longdong No. 1 Bridge on the Yunxian to Lincang Expressway in Yunnan Province
  • Longdong No. 1 Bridge on the Yunxian to Lincang Expressway in Yunnan Province

　　Longdong No. 1 Bridge spans National Highway 214 and Nantingle River, connecting two tunnel sections. The short-distance shore tunnel is 310 meters long, and the long-distance shore tunnel is 215 meters long. The bridge adopts a 2×58m continuous combined straight steel box girder, requiring top-pushing to cross a 310-meter arc-shaped tunnel and a 1.2-meter lateral correction before girder landing. It is the first project of this type in Yunnan Province and even the whole country.

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Longdong No. 1 Bridge on the Yunxian to Lincang Expressway in Yunnan Province
Longdong No. 1 Bridge on the Yunxian to Lincang Expressway in Yunnan Province
Longdong No. 1 Bridge on the Yunxian to Lincang Expressway in Yunnan Province
+
  • Longdong No. 1 Bridge on the Yunxian to Lincang Expressway in Yunnan Province
  • Longdong No. 1 Bridge on the Yunxian to Lincang Expressway in Yunnan Province
  • Longdong No. 1 Bridge on the Yunxian to Lincang Expressway in Yunnan Province

Longdong No. 1 Bridge on the Yunxian to Lincang Expressway in Yunnan Province

Longdong No. 1 Bridge spans National Highway 214 and Nantingle River, connecting two tunnel sections. The short-distance shore tunnel is 310 meters long, and the long-distance shore tunnel is 215 meters long. The bridge adopts a 2×58m continuous combined straight steel box girder, which needs to be pushed through a 310-meter arc-shaped tunnel and laterally corrected by 1.2 meters before landing. It is the first project of this type in Yunnan Province and even the whole country.

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Road and bridge engineering

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