Quantitative Rockfall Damage and Risk Analysis on Railroad Infrastructure after the 2024 Hualien Earthquake
DOI:
https://doi.org/10.64862/Abstract
Taiwan has abundant mountains and limited plains, resulting in transportation networks often constructed along valleys and riverbanks. Particularly for critical transportation infrastructure like the Eastern Taiwan North-Link Railway Line, segments remain susceptible to significant rockfall hazards. On April 3, 2024, a Mw 7.1 earthquake struck Hualien, Taiwan, triggering widespread coseismic rockfalls that damaged the North-Link Railway Line. Taking the mileage of K51 of the North-Link Railway Line as the case study, this study established a rockfall database using iPhone light detection and ranging (LiDAR) during the disaster reconnaissance. A quantitative rockfall damage and risk analysis based on three-dimensional rockfall simulations was then performed to contribute to effective mitigation strategies for railroad infrastructure in terms of rockfalls.
References
Chang, J. M., Chao, W. A., Yang, C. M., & Huang, M. W. (2024). Coseismic and subsequent landslides of the 2024 Hualien earthquake (M7. 2) on April 3 in Taiwan.
Crosta, G. B., & Agliardi, F. (2003). A methodology for physically based rockfall hazard assessment. Natural Hazards and Earth System Sciences, 3(5), 407-422.
Leine, R. I., Schweizer, A., Christen, M., Glover, J., Bartelt, P., & Gerber, W. (2014). Simulation of rockfall trajectories with consideration of rock shape. Multibody System Dynamics, 32(2), 241-271.
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