摘要
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。
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 instrument. The results of the experiment show that the displacement accumulation effect is more evident under the heavier and faster loads, and that the velocities of the load affect the shapes and the amplitudes of the water wave. And the accumulation of the displacement reduces the velocity of the loads. The effect of the accumulation of the displacement wave on the velocity of the load should be considered at the fast and heavy floating bridge engineering.
出处
《船舶力学》
EI
北大核心
2010年第11期1290-1296,共7页
Journal of Ship Mechanics
基金
国家自然科学基金资助项目(#50779072
#10772197)
关键词
长浮桥
快速重载
模型试验
位移波堆积
the long floating bridge
fast and heavy load
model experiment
the accumulation of the displacement wave
