Research on Key Technology of High Falling Beam Construction of 900 Tons Box Girder for High-Speed Railway
The Liujing Yujiang Grand Bridge is a controlling project for the entire Nanning-Yulin High-speed Railway line.The main cable-stayed bridge has spans that connect to 32.6 m simply supported box girders.Due to conflicts arising from the installation of simply supported box girders during the construction of the cable-stayed bridge's main girder,in order to avoid work stoppages and subsequent impacts on overall construction organization,it is necessary to conduct specialized technical research.The key construction technology of high-speed railway 32.6 m box girder high falling beam was systematically studied through theoretical analysis,engineering verification,etc.Temporary falling beam support systems were set up on the pier top to temporarily store 32.6 m simply supported box girders.Before and after the tensioning process,lattice structure support systems of top and falling beams were set up on the outside of the pier,utilizing four 450 t intelligent synchronized control jacks to achieve lifting and lowering of the girders,making construction convenient,safe,and efficient.This serves as a good reference for similar engineering construction in the future.
900 tons box girderhigh falling beamsupport systemsupport blockintelligent jack
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