CAJ | 학술논문

对目前土木结构试验中的位移采集、空间定位问题进行了讨论，分析了数字图像位移测试系统的一般构成、位移记录算法，构建了数字图像位移测试系统的原型。为验证构架的可行性，开发了简易的测试软件，采用视频记录了物体的运动轨迹，并通过最小二乘法进行多圆拟合对目标点进行精确定位，分析得到对应标靶的位移变化情况。通过与激光位移计的数据对比，验证了算法的正确性。最后，通过地震模拟振动台试验，验证了其在土木结构动态测试中的适用性。
대목전토목결구시험중적위이채집、공간정위문제진행료토론，분석료수자도상위이측시계통적일반구성、위이기록산법，구건료수자도상위이측시계통적원형。위험증구가적가행성，개발료간역적측시연건，채용시빈기록료물체적운동궤적，병통과최소이승법진행다원의합대목표점진행정학정위，분석득도대응표파적위이변화정황。통과여격광위이계적수거대비，험증료산법적정학성。최후，통과지진모의진동태시험，험증료기재토목결구동태측시중적괄용성。
The requirement of displacement and position locating in structure test has been discussed .As an ideal displacement test system ,the framework of the digital graphic displacement test system has been proposed .A simple verification prototype has been developed ,in which continuous video was dispersed to images and marks in these images were fitted by multi circles .Then the displacements are accurately located by the least square method .Compared with the laser displacement gauge ,it is proved that the system is applicable .After successful application in seismic simulation test , this method is considered to be available in structural dynamic test .