非接触测量系统在某钢桁架桥变形测量中的应用研究

Application of non contact measurement system in deformation measurement of a steel truss bridge

作为评价桥梁刚度的关键因素,桥梁变形测量方法得到了越来越多的研究。文章首先从时间基线法介绍了非接触摄影测量的原理问题,并对于非接触摄影测量的软硬件构成和坐标分析进行了详细探讨,依托于某简支下承式钢桁架桥梁施工过程变形测量,对于不同工况下的变形测量数据与全站仪测量数据进行了对比分析,结果证明非接触摄影测量技术的测量精度能够满足工程研究。

as a key factor to evaluate bridge stiffness,bridge deformation measurement method has been more and more studied.This paper first introduces the principle of non-contact photogrammetry from the time baseline method,and makes a detailed analysis of the software and hardware composition and coordinate analysis of non-contact photogrammetry.Relying on the deformation measurement of a simply supported through steel truss bridge during construction,the deformation measurement data under different working conditions are compared with the total station measurement data,and the results show that the non-contact photogrammetry is effective the measurement accuracy of shadow measurement technology can meet the requirements of engineering research.