Research on Construction Technology and Process of Large-span Simply-supported Steel-concrete Composite Beam in Deep Water Area
Based on the 60-meter-span simply-supported steel-concrete composite beam segment of a certain lack-crossing bridge project,a refined MIDAS CIVIL 3D numerical analysis model of steel structure temporary pier method was established. This study carried out an in-depth research on the key construction technologies of steel structure temporary pier erection in deep water area,production and segment installation of large-span steel-concrete composite beam. Specific and feasible construction process schemes,such as temporary pier erection,segment transportation,fabrication and installation of composite beam,were put forward,and have been successfully verified in the construction process of this project. The research results showed that the construction technology and process of segmental steel-concrete composite beam can not only improve the safety and reliability of bridge structure,but also accelerate the construction progress and reduce additional investment of steel beam erection equipment. The research results can provide a theoretical and practical basis for the construction of similar bridges in the future,especially for large-span bridges in deep water area.
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