中文摘要：

挠度、位移、线形测量是桥梁检测的重要组成部分，是桥梁质量和安全性评估的重要指标。为克服原有测量方法的不足，介绍了一种新的测量方法，首先在桥上安装合作目标，然后利用测量机器人在加载前后分别获取合作目标的几何信息，最后计算出相应的挠度、位移、线形。通过对该方法精度的推导和分析，论证出该方法能满足桥梁检测的精度需要。结果表明该测量方法精度高，速度快，具有广阔的应用前景。

英文摘要：

The measurements of deflection, displacement, and geometric configuration are important components of bridge inspection. They are important indexes of bridge quality and safety assessment. The paper introduces a new method to offset the shortage of old measurement method. At first,co-operant targets are set on the bridge. Then, the geometric information of co-operant targets is acquired by the measurement robot. At last, the deflection ,the displacement, and the geometric configuration are calculated. By deducing and analysing the accuracy of the method, it proves that the new method can meet the accuracy demand. The results show that the proposed method is highly accurate and saves time. It surely enjoys a very promising perspective.