大跨度桥梁的等效脉动风速模拟

The simulation of equivalent turbulent wind velocity on the large-span bridge

鉴于脉动风速时程模拟是计算大跨桥梁结构在脉动风作用下响应的前提,采用Deodatis’谐波合成法,通过模拟桥面处水平和竖向的等效风速时程曲线,为进一步计算桥梁的抖振响应提供了方便,并验证了该方法的有效性。

On the basis of the turbulent wind velocity simulation is the precondition of the calculation for the response of the large-span bridge structure under the turbulent wind function, it adopts the Deodatis＇ spectral representation. Through the simulation for the time-history curve of equivalent turbulent wind velocity on the horizontal and vertical bridge floor, it provides the convenience for calculating the buffeting response of bridge and verify the validation of this method.