Swivel construction is currently a commonly used construction method for overpass bridges,and with the increase of bridge span and swivel weight,the construction difficulty will also increase.This article is based on the continuous beam project of the Shanghai Nanjing intercity bridge of the South Yangtze River intercity railway,focusing on checking and analyzing the rotating structure,as well as summarizing the relevant construction and monitoring methods.Simplified analysis and software modeling analysis methods were used to calculate and analyze the traction system,steel pipe concrete columns,bailey beams,etc.of this rotating construction,and engineering measures to increase the integrity of the support were proposed.The key technologies for the construction of the swivel structure were summarized,and the alignment and stress state during the bridge construction process were monitored to ensure the balance of the swivel continuous beam bridge system and the closure accuracy of the main beam.
long span continuous beam bridgeswivel constructionfield testconstrcution monitor
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