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《Bridge Construction》 2013-03
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Key Techniques for Construction of Pylons of Main Bridge of Anqing Changjiang River Railway Bridge

LIU Ai-lin,WANG Jian-feng(Construction Headquarters of Anqing Changjiang River Bridge on Nanjing-Anqing Railway, China Railway Major Bridge Engineering Group Co.,Ltd.,Anqing 246008,China)  
The main bridge of Anqing Changjiang River Railway Bridge is a steel truss girder cable-stayed bridge with double pylons and triple cable planes.The pylons of the bridge,each being 210 m high,are the concrete structures in the shape of inverted Y at the upper parts and of diamond at the lower parts.In the light of the characteristics that the pylons are very high,the sections of the pylons are large and are laid out with two layers of main reinforcement,the bases of the pylons and the 8.5 m bottom segments of the lower pylon columns were constructed by the method of casting-in-situ formwork and scaffoldings while the rest parts of the pylon columns were constructed by the hydraulic climbing formwork in each 6 m segment.The cross beams of the pylons were constructed in each two layers synchronously with the joint sections of the pylon columns,using the method of steel pipe post scaffoldings and the segments of the upper pylon columns were constructed,using the technique of synchronous construction of the pylons and girder.In the construction,the steel framed skeletons were set in the pylon columns to improve the hydraulic climbing system.In between the two middle pylon columns of a pylon,4 temporary steel pipe cross bracings were set.The machinery and equipment were rationally deployed,the construction technology control measures for the massive concrete and the geometric shape survey and control measures for the pylons were taken to finally ensure the construction safety and quality.The construction of the pylons of the bridge was completed on September 14,2012.
【CateGory Index】: U448.27;U445.4
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【Citations】
Chinese Journal Full-text Database 6 Hits
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