Jin Changcun Steel Box Girder Bridge on the Chu-Da Expressway in Yunnan Province
Jin Changcun Steel Box Girder Bridge on the Chu-Da Expressway in Yunnan Province
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  • Jin Changcun Steel Box Girder Bridge on the Chu-Da Expressway in Yunnan Province
  • Jin Changcun Steel Box Girder Bridge on the Chu-Da Expressway in Yunnan Province

　　The project is located in Fengyi Town, Dali City, Yunnan Province, and connects to the Kunming-Chuxiong section expansion project of the Hangrui National Expressway. A steel box girder spans the Dali Expressway. The Dali Expressway is a connecting line of the "Hangrui Expressway (G56)", an important national expressway planned route. It consists of 13 spans and weighs approximately 4500 tons. The bridge site has a relatively high longitudinal elevation, with a maximum bridge deck height of approximately 30 meters. Considering the steel box girder crosses over an existing expressway, the construction is difficult, and traffic organization and diversion are challenging. To minimize the impact on expressway construction, the steel box girder is constructed using a step-by-step launching method.

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Jin Changcun Steel Box Girder Bridge on the Chu-Da Expressway in Yunnan Province
Jin Changcun Steel Box Girder Bridge on the Chu-Da Expressway in Yunnan Province
+
  • Jin Changcun Steel Box Girder Bridge on the Chu-Da Expressway in Yunnan Province
  • Jin Changcun Steel Box Girder Bridge on the Chu-Da Expressway in Yunnan Province

Jin Changcun Steel Box Girder Bridge on the Chu-Da Expressway in Yunnan Province

The project is located in Fengyi Town, Dali City, Yunnan Province, and connects to the expansion project of the Kunming-Chuxiong section of the Hangrui National Expressway. The steel box girder crosses the Dali Expressway. The Dali Expressway is a connecting line of the "Hangrui Expressway (G56)", an important national expressway planning trunk line. There are a total of 13 spans, weighing approximately 4500 tons. The bridge site has a relatively high longitudinal profile, with a maximum bridge deck height of approximately 30 meters. Considering that the steel box girder crosses over the existing expressway, the construction is difficult, and traffic organization and diversion are difficult. In order to reduce the impact on the expressway construction, the steel box girder is constructed using a step-by-step launching method.

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Road and bridge engineering

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