GPS Performance Assessment of Cable-Stayed Bridge using Wavelet Transform and Monte-Carlo Techniques

Global Positioning System (GPS) is an emerging tool of Structural Health Monitoring (SHM) that can be used to help in understanding the nature of dynamic deformation/vibrations and explore the factors affecting the structural damage in three directions. In this study, the GPS geodetic survey techniques has been used on the Incheon Long-Span Cable-Stayed Bridge (ILSCSB) in Korea. Both of the bridge deck and pylon have been monitored using the high-rate (10 Hz) GPS measurements in lateral, longitudinal and vertical directions. The time series analysis has been carried out to evaluate the three-dimensional structural behavior of the bridge in time and frequency domains. The multi-filtering approach, wavelet transform, and Monte Carlo simulation of GPS data have been applied, including the fundamental frequency, the dominating deformation, and energy content of the bridge. The results reveal that the proposed methods based on the GPS-SHM system provide a potential technique for monitoring the dynamic characteristics of bridges with adequate performance. Furthermore, it can help in confirming the safety of a bridge under dynamic loads.

Language

  • English

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Filing Info

  • Accession Number: 01689431
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 4 2018 3:03PM