斜拉索动位移实时测定方法研究和系统开发
Method research and system development of real-time measurement for stay-cable dynamic displacement

基于单相机多测点动位移测定技术，建立斜拉索动位移实时测定方法. 基于LabVIEW程序开发平台，编制单相机测定多测点动位移的程序，开发斜拉索动位移实时测定系统. 通过与激光位移计进行室内试验比较，验证该测定方法的有效性、多目标测定的实用性和测定结果的准确性，并讨论相机拍摄角度对于测量精度的影响. 利用单相机多测点动位移测定系统对泉州晋江大桥的拉索动位移进行实桥测量，验证了该测定方法应用于实桥测试的可行性和有效性.
Based on the multi-targets dynamic displacement measurement technology，the real-time measurement method for the stay-cable was put forward. Based on LabVIEW，the program to use a single camera to measure the multi-targets dynamic displacement was developed. The dynamic displacement measurement system for the stay-cable was developed. The result of the indoor test was compared with that of the laser vibrometer. The validity of the method，the applicability of the multi-targets measuring and the accuracy of the result was proved. The effect of the measuring angel on the accuracy of the result was also discussed. The system was used to test the dynamic displacement of the stay-cable in Quanzhou Jinjiang Bridge. The reliability and the effectiveness of the method for the real bridge measuring were certified