Study on Deflection-Span Ratio of Cable-Stayed Suspension Cooperative System with Single-Tower Space Cable

This study uses the wind–vehicle–bridge coupling vibration analysis method to investigate bridge stiffness problem of a large-span cable-stayed-suspension cooperative system. On basis particle-damping-spring vehicle model, TMeasy surface contact tire model is introduced, and set universal algorithm built in framework whole process iterative method. Based on Latin supercube sampling principle, random traffic flow generated loaded onto structures with different conditions analyze driving comfort safety under each condition. Combining specification requirements, engineering experience, research results, vertical limit applicable highway collaborative system proposed. Existing experience shows that deflection-to-span ratio cable-stayed live load distributed between 1/400 1/1600, deflection span action lane recommended based numerical analysis.