移动飞机荷载作用下滑行道桥的动力响应分析

针对飞机荷载的特点，以首都机场5号滑行道桥为例，用模态综合法分析了飞机与滑行道桥耦合系统的振动情况。采用4自由度飞机模型，在用有限元软件分析得到桥梁频率和振型的基础上，建立滑行道桥与飞机的振动时变方程，用逐步积分法解方程组得到了滑行道桥任意点的挠度时程曲线。结果表明，此方法能够较为准确的描述滑行道桥在飞机移动过程中的动态响应。

Dynamic Analysis of the Taxiway Bridge Under Aircraft Moving Load

Against the characteristic of aircraft load,the condition of coupled aircraft-bridge vibration is analyzed by modal method using number five taxiway bridge of Beijing Capital Ariport as a example.The frequency and modal of the taxiway bridge modal is obtained firstly from the analysis by existing general finite elements software;then associated with a four-degree-of-freedom aircraft modal,the vibration equation of interactive system constituted by spatial vehicle model and bridge model established;finally t...