【摘要】 首先对人工雨线拉索模型进行了风洞实验,测量了气动力系数。建立了斜拉桥拉索风雨激振理论分析的一个新方法,基于此方法和试验所得的气动力系数,探讨了水线在拉索表面的周向振荡对拉索风雨激振所起的作用,以及拉索风雨激振的机理。最后将计算结果和有关文献中的试验结果进行了对比,它们基本一致。更多还原

【Abstract】 A new method for the rain-wind incuced vibration of stay cables of cable-stayed bridges is proposed in the paper. A wind tunnel test on a stay cable model with an artificial rivulet is first carried out. An attempt is made to obtain the aerodynamic force coefficients of the model. The method for analyzing the rain-wind incuced vibration of the model is developed. Based on the test results and the proposed method, the effects of rivulet’s motion on the model under the vibration and the mechanism are studied. Finally, the computed results are compared with that of the experimental one from other researches; they agree with each other.更多还原