快速重载作用下长浮桥运动响应的模型试验研究

在快速重载作用下,柔性长浮桥可能会出现位移波堆积效应.为验证预测的正确性,对两种长浮桥模型(连续浮桥和分置式浮桥)进行了试验,在不同荷载重量下和不同速度作用下的位移响应利用六自由度运动测定仪进行了测量.试验结果表明:荷载重量越大、荷载速度越快,位移波的堆积效应越明显;荷载的速度对兴波的形状和波幅都有着直接的影响.位移波的堆积影响了荷载的运行速度,在快速重载的浮桥工程中,必须考虑位移波的堆积对运动荷载的影响.

Model experiment of the long floating bridge subjected to fast and heavy load

It is hypothesized that the displacement wave accumulation effect will occur at the long flexible floating bridge subjected to the fast and heavy loads.The two long floating bridge models,including the continuous floating bridge and the span floating bridge,are carried out in order to validate the feasibility of the hypotheses.Then the dynamic displacements of the floating bridges are measured at various weights and different velocities of the loads employing the six-degree-of-freedom dynamic measure instru...