通过设计小车的尺寸、形状、撞击速度等撞击参数后,在不同情况下分别进行小车撞击桥墩的模型实验。采用摄像机记录船舶在撞击过程中空间位置的变化,运用MatLab软件对实验采集到的船舶运动图像进行数据分析处理,确定小车在整个撞击过程中的运动轨迹。同时在分别改变模型小车的质量、速度、重心位置、撞击角度后,对桥墩刚度进行实验,获取不同参数下的小车运行轨迹,并对各参数下的实验结果进行比较、分析,利用图像处理技术建立了确定物体运动轨迹系统的方法。

A car model setting by means of dimensional analysis is first designed to determine its size,shape,the impacting velocity and other parameters.Then model tests of car impacting to pier are respectively performed in different situations.MatLab graphics is used to process the data obtained from pictures taken with a video camera to identify the track of the model car in the impacting process .Meanwhile,the mass,velocity,barycenter position and impacting angle of the model car and the stiffness of the bridge pier are adjusted to obtain the model car track under different parameters.The result of these experiments are then compared and analyzed to establish a systematic method of determining the motion track of an object with the image-processing technology.