斜拉桥索力检测的振动频率法的分析及应用

主要从斜拉桥索力检测的角度论述了振动频率法的基本理论,分析了振动频率法检测索力的基本原理。采用振动频率法在铜陵长江大桥进行索力检测获得了满意的结果。该方法能正确地反映斜拉桥在荷载作用下的索力变化,其实测结果与计算值非常接近,误差极小且在允许范围内,证实了振动频率法的正确性和可靠性。

Analysis of the oscillating frequency technique on cable stress detection of cable-stayed bridge and its application

The basic theory of the oscillating frequency technique is studied from the cable stress detection of cable-stayed bridge point of view. The basic mechanism of the oscillating frequency technique in detecting cable stress is analyzed. And there is a good result in detecting cable stress of Tongling Yangtz River Bridge by the oscillating frequency technique, which is capable of correctly reflecting the cable stress variation under load. The measurement results are found very close to the calculations with only slight errors. And error of measure between measured data and truth-value is within the permitted area. Furthermore, the oscillating frequency technique are proved to be correct and reliable.