梁桥在多辆车辆荷载作用下的振动分析

The vibration analysis of the beam bridge at some moving vehicle loads

采用无限自由度桥梁模型对梁桥在多辆移动车辆荷载作用下的强迫振动问题进行了分析 ,给出了简支梁桥在两辆移动汽车分别以不同的车重和不同的车速作用下的跨中动位移的时程曲线 ,并与一辆汽车荷载作用下的动位移和静位移作了比较。本文对直观地了解桥梁与车辆耦合振动系统的动力特性规律和机理具有一定的参考价值。

The forced vibration problem of infinite number of degree of freedom bridge model of the beam bridge at some moving vehicle loads is presented, and the time-deflection curve of dynamic displacement of the beam bridge below the distinct weight and distinct speed of vehicles situation are calculated. The comprehend audio-visually fundamental appearance and mechanism of dynamic property regulation of couple systematic of bridge at some moving vehicle loads possesses reference value.