The construction technology of steel box girder incremental launching method is deeply studied,and its application in super-large bridge engineering is discussed.The incremental launching construction does not require the use of large cranes,but faces the problem of excessive self weight of welded box girders,which need to be pushed into the temporary pier foundation.This paper focuses on the importance of temporary support system design and sliding track installation to incremental launching construction,summarizes the key technologies in the construction process,and emphasizes the role of technical practice and reinforcement measures in engineering quality improvement.
large-span bridgesteel box girderincremental launching construction
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