Research on the Mechanical Performance of Asymmetric Continuous Beam Bridge Ball Joint Based on Horizontal Rotation Construction

For large-span concrete continuous beam bridges constructed by the horizontal rotation method, the force on the concrete ball joint during the horizontal rotation process is complex, and simplified algorithms are often used in practice. However, this simplified calculation generally does not consider the uneven distribution of load and changes in friction coefficient, resulting in large errors and a large calculation amount. This paper conducted a specific study on the elevated project of the North Ring Road for cross freight transportation on Eurasia Avenue in Xi'an International Port Area. A refined finite element model of the ball joint was established using ANSYS, and the actual stress state of the ball joint was simulated; And considering the complex stress state and deformation of the ball joint under different load distribution forms and friction coefficients, the stress change curves under different parameter settings were drawn based on the yield strength theory. The results indicate that the research method presented in this article is effective and feasible. The established model can effectively simulate the situation of ball joints during construction. In response to changes in load and friction coefficient, adjustments can be made in the model in a timely manner, effectively solving the problem of traditional simplified calculations.