- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
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- Chinese Science Citation Database
| Citation: | GAO Tianci, JIANG Lepeng, WANG Yuan, LIU Xiaozhou, LUO Qin, HE Qing, WANG Ping. Analysis of Vibration Characteristics of Curved Floating Slabs and Train Anomalies Based on Trackside Multi-Sensor Fusion[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20240423
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To investigate the influence of curves and train conditions on the vibration response of floating slab tracks, portable intelligent sensing terminals were installed on floating slabs at multiple locations, including both straight sections and curves. The vibration acceleration of the floating slabs was measured as trains passed, and the corresponding displacements were calculated. By conducting a comparative analysis of vibration characteristics, including acceleration and displacement, at different locations of floating slab tracks in straight and curved sections, the differences in vibration behavior between curved and straight sections can be identified. Additionally, by analyzing the vibration characteristics of the floating slabs at the same position for different trains, potential train issues such as wheel irregularities were found. The results show that the vibration acceleration of floating slab tracks in curved sections is higher than in transition curve sections and straight sections. Specifically, the 95th percentile peak-to-peak vertical acceleration at the end of a floating slab with a 500-meter radius is approximately 5 to 10 times higher than that in straight sections, while vertical displacements remain relatively similar across these sections. Trains with polygonal wheels exhibit more intense vibration when passing over floating slabs compared to normal trains. The 95th percentile peak-to-peak vertical acceleration for such trains is about three times higher than that for normal trains, although the vertical displacements remain largely similar. Based on these vibration differences, a “vehicle spectrum” was developed to identify issues such as wheel irregularity, providing a technical basis for rapid detection of vehicle-related faults in metro floating slab track sections.
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Figures(10) / Tables(1)
GAO Tianci, JIANG Lepeng, WANG Yuan, LIU Xiaozhou, LUO Qin, HE Qing, WANG Ping. Analysis of Vibration Characteristics of Curved Floating Slabs and Train Anomalies Based on Trackside Multi-Sensor Fusion[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20240423
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