Abstract The non-linear aerodynamic effects on a bridge deck section are both experimentally and numerically investigated using a new time-domain numerical model based on the combination of a non-linear corrected quasi-steady theory and a rheological approach. The model is developed to reproduce the response of a bridge to turbulent wind taking into account the non-linearities of the aerodynamic forces induced by the fluctuation of the angle of attack. The methodology introduces rheologic mechanical model to reproduce the dependence of aerodynamic forces on the reduced velocity. Through a one-shot integration the single numerical model is able to describe the static response, the low-frequency response and the high-frequency response of the bridge to turbulent wind. Finally, the numerical model is validated against aeroelastic wind tunnel tests performed by means of an active turbulence generator acting on a deck sectional model suspended on springs.

中文翻译：

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通过风洞试验计算模型验证桥梁抖振响应的非线性方法

摘要 使用基于非线性校正准稳态理论和流变学方法的新时域数值模型，对桥面板截面的非线性气动效应进行了实验和数值研究。开发该模型是为了再现桥梁对湍流风的响应，同时考虑了攻角波动引起的空气动力的非线性。该方法引入流变力学模型来重现空气动力对降低速度的依赖性。通过一次性积分，单个数值模型能够描述桥梁对湍流风的静态响应、低频响应和高频响应。最后，