Stress Performance Analysis on New Type of Concrete-filled Steel Tube Pre-stressed Truss Continuous Beam Bridge

This paper takes the construction of Gan Hai-zi concrete-filled steel tube pre-stressed continuous truss Beam Bridge as the engineering background. Combined with the actual construction process of the bridge, taken the main structure of the bridge as the typical prestressed composite structure and used the finite element joint section to simulation the whole construction process of the 35th and 36th experimental cross composite structure of the bridge. Theoretical analysis combined with the field test, and the calculation results are in good agreement with the experimental results, which shows that the construction mechanical performance of the new bridge structure is good.