曲线箱梁桥的车-桥耦合振动分析

Analysis for Coupled Vibration of Vehicle-Bridge on Curved Box Girders

利用Ansys软件计算了连续箱梁桥不同曲率半径时的自振频率,用梁单元模拟连续曲线桥,用移动质量模拟车辆,建立了车-桥耦合振动模型。考察了曲率半径、车辆速度、车重对曲线桥挠度冲击系数的影响,总结了曲线桥挠度冲击系数随曲率半径、车辆速度、车重的变化规律。

Abstract： Ansys software was applied to calculate the vibrating frequencies of the different radius of curved box girders, beam elements was used to simulate continuous curved bridge, moving mass was used to simulate vehicle, so a vehicle - bridge coupled vibration model was established. The impact of the radius of curvature, vehicle speed and vehicle weight on curve bridge deflection impacting factors were ex- amined, the changing rules of curve bridge deflection impacting factors with the radius of curvature, vehicle speed, vehicle weight variation was summarized.