Central Load-Bearing Control in the Construction Process of the Concrete Spherical Joint Nandu River Swing Bridge: A Case Study

The rotating mechanism is a significant procedure in swing bridges. In this paper, the Nandu River bridge taken as an engineering case study to exhibit critical technology of monitoring process and construction method bridge. research focuses on central load-bearing control system used guarantee security process. mechanical problems during are discussed. Simultaneously, cable tension gravity center test introduced. non-Hertz contact theory utilized calculate stress distribution spherical joint. Furthermore, overturning moment computed monitor stability based calculation entirely exhibited Concurrently, calculating result real-time reflects process, adjustments made ensure safety construction. results show that, middle position main arch 162.3 mm maximum vertical displacement. Meanwhile, fraction was greatly larger than unbalanced moment. value 2094.38 kN·m, which smaller resistance present demonstrates that fits joint distribution. should be monitored displacement at tensioning stages. key steps reaching control.