桥梁挠度测量的一种新方法

A NEW METHOD FOR BRIDGE DEFLECTION MEASUREMENT

桥梁挠度测量是桥梁检测的重要组成部分 ,是桥梁安全性评价的一项重要指标。本文介绍了一种桥梁挠度测量的新方法及其应用软件的开发原理。通过在所测桥梁上布设QY型倾角仪 ,测量各测点的倾角值 ,然后用专用软件给出关心桥梁截面的挠度、倾角和曲率值 ,从而为桥梁安全性评价提供依据。本方法克服了以往桥梁挠度测量方法的不足 ,不仅适用于简支梁和静载情形 ,而且适用于连续梁和动载情形。大量的实验室对比实验和工程实测结果表明 ,采用倾角仪计算得到的桥梁挠度精度满足工程要求 。

A new method for bridge deflection measurement is proposed in the paper The angle value at any point is determined by a special inclinometer It is installed at that point on the bridge A special program is developed to compute the deflections,the inclined angles,and the curvature at specific points on the bridge It is provided a scientific basis for the bridge safety evaluation The special inclinometer can be used in the case of simply supported bridge also in the case of multi?span bridge Some results show that the proposed method is feasible