Experimental Inverstigation on Wind-resistent Behavior of Dagu-river Channel BridgeLI Ling-yao,GE Yao-jun(State Key Laboratory for Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)The dynamical analysis of Dagu-river Channel Bridge during construction and service were conducted by adopting a double-beam mechanical model.Flutter and buffeting vibration of the single-tower self-anchored suspension bridge with separated double-box girder were studied by conducting overall bridge aeroelastic model wind tunnel test.The critical flutter wind speed and buffeting response were measured,and wind-resistant property of the bridge was assessed based on the experimental results.The results showed that the bridge has good aerodynamic stability which might be a reference for design of the same bridge type.single-tower self-anchored suspension bridge; separated double-box girder;dynamic behavior;overall bridge aeroelastic model;wind-resistant property