Assessing structural safety under repeated earthquakes: Integration of an energy-based function in Nsmos®
Hiroki Kazama, Hirotaka Imaeda, Hiroki Kameda, Nicolas Giron
Abstract. The authors have developed and integrated a new function into an existing operational monitoring system (NSmos®) to assess structural safety of a steel structure during repeated earthquakes, such as the 2016 Kumamoto earthquakes. Using data from the system’s accelerometers, the acceleration and displacement of each story of a building are estimated. The acceleration is then multiplied by the pre-inputted story weight to estimate the earthquake-induced shear force. Based on the resulting restoring force, the earthquake’s induced hysteretic energy is calculated and added to that of previous earthquakes. This cumulative energy is then compared to the building’s energy-dissipation capacity, which is determined from the specifications of its structural members in accordance with energy-based design theory. Finally, the accuracy of this approach is verified through computational analysis.
Keywords
Structural Health Monitoring, Repeated Earthquakes, Structural Safety Assessment, Energy
Published online 3/25/2025, 7 pages
Copyright © 2025 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Hiroki Kazama, Hirotaka Imaeda, Hiroki Kameda, Nicolas Giron, Assessing structural safety under repeated earthquakes: Integration of an energy-based function in Nsmos®, Materials Research Proceedings, Vol. 50, pp 285-291, 2025
DOI: https://doi.org/10.21741/9781644903513-33
The article was published as article 33 of the book Structural Health Monitoring
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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