Study on Mechanical Properties of Steel-Concrete Composite Section of Extradosed Cable-Stayed Bridge
The steel-concrete composite section is one of the most important parts of the extradosed cable-stayed bridge,and the structure is more complex.In order to study the mechanical properties of steel-concrete joint section of long-span railway hybrid girder cable-stayed bridge,this paper takes Liulv Yongjiang Bridge as the engineering background,and uses scale model test method to explore the stress distribution law and deformation characteristics of steel-concrete joint section under 1.0 times and 5.0 times maximum axial force conditions and maximum negative bending moment conditions.The test results show that the steel-concrete composite section members are in compression state under two different working conditions,and the stress change trend of each measuring point is basically the same.The displacement difference of vertical deformation under the same working conditions is not large,the deformation is continuous and smooth,and the stiffness transition is smooth,indicating that the steel-concrete composite section has good bearing capacity.
万方数据
维普
