Abstract
Deformation monitoring and dynamic characteristic analysis of bridge structures are the vital and basic requirements for the safe operation of bridges. In recent years, Global Navigation Satellite System (GNSS) has become increasingly widely used in bridge structural health monitoring with the development of the GNSS technology, especially the continuous improvement and development of China's Beidou navigation satellite system (BDS). This article summarizes the application process of GNSS dynamic deformation monitoring and the development of GNSS deformation measurement technology of bridge structural health monitoring, the dynamic characteristic identification method and its application in bridge GNSS monitoring. The positioning solution methods for GNSS monitoring, the high sampling rate GNSS receiver for monitoring, multi-frequency and multi-system GNSS monitoring and the weakening of multipath effect of GNSS monitoring are summarized in detail. Then, the conclusions and prospects are posed for future research and related application.
Highlights
The bridge structure inevitably produces damage accumulation and resistance attenuation due to the influence of various factors, such as vehicles, pedestrian traffic, material corrosion, environmental excitation, earthquakes, ship collisions, resulting in a decline in its bearing capacity and reliability, regardless of the bridge types [1]–[3]
The structural deformation monitoring of the bridge belongs to the category of structural health monitoring, which mainly focuses on the dynamic evaluation and management of the dynamic parameters of the bridge structure
The results indicated that the method was simple, effective and helpful in explaining the source of multi-path error on the Global Navigation Satellite System (GNSS) stations, which is convenient for its location selection
Summary
The bridge structure inevitably produces damage accumulation and resistance attenuation due to the influence of various factors, such as vehicles, pedestrian traffic, material corrosion, environmental excitation, earthquakes, ship collisions, resulting in a decline in its bearing capacity and reliability, regardless of the bridge types [1]–[3]. Ashkenazi et al [6], [52] applied the GNSS technology to the monitoring of the Humber River Suspension Bridge with a main span of 1 410 m in 1997, and pioneered the verification of the real-time dynamic difference method for bridge 3D vibration displacement monitoring with an accuracy of up to mm level.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
