DISPLACEMENT AND THE FUNDAMENTAL FREQUENCY OF THE SUPERSTRUCTURE OF THE HUARIPACHI BRIDGE BY MEANS OF THE GLOBAL POSITIONING SYSTEM TECHNIQUE

Abstract

The objective of the research is to determine displacements and fundamental frequencies of the Huaripachi bridge through the technique of the global positioning system; Monitoring the metrics of the bridge structure is vital to control the degradation or corrosion of the structures. The data acquisition was with a 10Hz sampling, processed in the Precise Point Positioning Service of the Canadian Spa-tial Reference System (CSRS-PPP), semi-static, dynamic displacement and the fundamental frequency were deter-mined, by mean methods. mobile, Chebyshev type I, fast Fourier transform and Continuous Wavelet. The results of the investigation showed semi-static displacements of 4.96, 5.15 and 25.47 mm, dynamic displacements of 2.30, 3.18 and 12.36 mm in lateral and vertical components respec-tively and finally the fundamental frequencies of the bridge were found to be 0.61, 0.71, 1.05 and 2.47 Hz. with verti-cal absolute error of -2.0%, 50% and 1.5% for semi-static, dynamic and fundamental frequency..