Design and Application of Support System of Cast-in-situ Continuous Box Girder in Tidal Flats

This paper mainly introduces the design of large steel truss formwork support system in the construction of the cast-in-situ continuous box girder of Binhai Avenue North phase two project which is located on the seaside soft foundation area.The support system design is verified through construction and achieves the expected results,all the cast-in-place box beams in the construction are successful completed,a new method of cast-in-place continuous box girder construction in soft foundation area,which is different from the traditional support system,is formed,it accumulates experiences for similar engineering.