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桥梁风荷载很复杂 ,在桥梁初步设计阶段没有必要进行精确地抖振分析。借助随机振动理论 ,考虑到脉动风荷载的背景和共振分量各自特点 ,在平均风荷载中引入系数计入背景分量。将风荷载简单化 ,以便在简单的设计或初步设计阶段计算桥梁风荷载。
The wind load on the bridge is very complex and it is not necessary to perform an accurate chattering analysis during the preliminary design phase of the bridge. Based on the random vibration theory, taking into account the background of the fluctuating wind load and the characteristics of the resonance component, the coefficient of wind load is introduced into the background component. Simplify wind loads to calculate bridge wind loads in simple design or preliminary design stages.