Vibration Frequencies Extraction of the Forth Road Bridge Using High Sampling GPS Data

A novel method using high-sampling GPS data successfully extracted vibration frequencies from the Forth Road Bridge, revealing distinct frequency responses under different loading conditions. The study demonstrated that GPS can reliably capture 3D deflections and accurately extract structural frequencies, with height displacement time series providing more stable results than lateral displacements. Key frequencies of 0.105 Hz and 0.269 Hz were identified from both lateral and height data, correlating well under ambient circulation, strong wind, and trial loadings with two 40-ton lorries. This approach offers a robust tool for real-time structural monitoring.

Wang, J., Meng, X., Qin, C., & Yi, J. (2016). Vibration Frequencies Extraction of the Forth Road Bridge Using High Sampling GPS Data. Shock and Vibration, 2016, 1–18. https://doi.org/10.1155/2016/9807861