Study on Wind Resistance Performance of Long-span Cable-stayed Bridge with Spatial Curved Pylon
It is very important for the wind resistance of bridge because of its long span crossing river and high wind speed at the bridge location.With the bridge structure becoming more and more complicated,the general formulas in specifications cannot be applied to the calculation of wind resistance.Therefore,the wind resistance performance of a river-crossing curved-pylon cable-stayed bridge with a main span of 238 m is studied.The research includes that the virtual wind tunnel technology is used to obtain the static aerodynamic coefficients,aerodynamic derivatives of the main girder and the simulated wind load of the bridge pylon sections.The flutter performance of the main girder is tested by the three-dimensional flutter stability analysis method.The vortex-induced resonance of the main girder is numerically simulated to obtain the amplitude-wind speed curves under the different wind attack angles.The displacement response of the structure under the static wind load is analyzed.The results show that the wind resistance performance of the bridge meets the specification requirements.
NETL
NSTL
万方数据
维普
