Version 1
: Received: 22 May 2023 / Approved: 23 May 2023 / Online: 23 May 2023 (07:21:33 CEST)
How to cite:
Chen, Y.; Huang, Q.; Zhang, T.; Zhou, M.; Jiang, L. A Comprehensive Analysis of Static and Dynamic Load Tests of a Long-Span Cable-Stayed Bridge with a Ground-Based Radar Interferometer. Preprints2023, 2023051593. https://doi.org/10.20944/preprints202305.1593.v1
Chen, Y.; Huang, Q.; Zhang, T.; Zhou, M.; Jiang, L. A Comprehensive Analysis of Static and Dynamic Load Tests of a Long-Span Cable-Stayed Bridge with a Ground-Based Radar Interferometer. Preprints 2023, 2023051593. https://doi.org/10.20944/preprints202305.1593.v1
Chen, Y.; Huang, Q.; Zhang, T.; Zhou, M.; Jiang, L. A Comprehensive Analysis of Static and Dynamic Load Tests of a Long-Span Cable-Stayed Bridge with a Ground-Based Radar Interferometer. Preprints2023, 2023051593. https://doi.org/10.20944/preprints202305.1593.v1
APA Style
Chen, Y., Huang, Q., Zhang, T., Zhou, M., & Jiang, L. (2023). A Comprehensive Analysis of Static and Dynamic Load Tests of a Long-Span Cable-Stayed Bridge with a Ground-Based Radar Interferometer. Preprints. https://doi.org/10.20944/preprints202305.1593.v1
Chicago/Turabian Style
Chen, Y., Ming Zhou and Liming Jiang. 2023 "A Comprehensive Analysis of Static and Dynamic Load Tests of a Long-Span Cable-Stayed Bridge with a Ground-Based Radar Interferometer" Preprints. https://doi.org/10.20944/preprints202305.1593.v1
Abstract
Bridge load testing is crucial in evaluating bridge load-carrying capacity and construction quality. However, conventional techniques have many limitations such as the need for direct contact and low acquisition frequency. This study provides a comprehensive examination of the static and dynamic load tests of a multi-span cable-stayed bridge utilizing a ground-based radar inter-ferometer (GB-radar). The case study was conducted at the Fifth Nanjing Yangtze River Bridge (FNYRB), which is recognized as the world's first lightweight steel-concrete composite cable-stayed bridge, with two spans measuring 600 m. To enhance measurement accuracy, a method was proposed to detect and recover radar phase jumps caused by vehicle motion. Furthermore, precise geometry projection was employed to acquire vertical displacements from GB-radar which were taken along the line-of-sight (LOS) direction. Moreover, during the static load test, a continuous deformation was observed with a maximum pace of 0.31 mm/min, indicating a post-construction settlement caused by soft soil consolidation. This case study highlights the high sampling frequency, high measurement accuracy, and exceptional weatherproof ability of GB-radar, thereby demonstrating its potential to be an alternative to the structural health monitoring (SHM) system.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
