Study on Design and Construction of Space Bracket System of Large Cantilever Prestressed Cover Beam
In this paper,based on the construction of large cantilever prestressed cover beam in A2 contract sec-tion of G316 Changle Zhanggang to Yingqian Section as the engineering background,combined with the construc-tion environment and geological conditions of the bridge,the advantages and disadvantages of disc buckle brack-et,steel pipe composite bracket and space bracket are compared and analyzed,and a space bracket system com-posed of bull leg,diagonal brace,main support beam and transverse distribution beam is designed.The stress,de-formation and stability of the designed support under different working conditions are checked in detail by finite element software.The results show that the space bracket method is safe and reliable for large cantilever pre-stressed covered beams.
large cantilever prestressed cover beamspace bracket systemstructural design and calculationcon-struction procedure
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