A New Structural Health Monitoring System for Real-Time Evaluation of Building Damage

Conference paper
Part of the Springer Natural Hazards book series (SPRINGERNAT)

Abstract

The author has developed a new method for evaluating the seismic performance of existing structures from measured accelerations based on the capacity spectrum method. This involves comparing the performance curve, which is the equivalent nonlinear behavior of a simplified single-degree-of-freedom system, and the demand curve, which is the relationship between the response acceleration and displacement spectra. Two telecommunication towers in Japan were instrumented in 2016, and their responses during several earthquakes have been recorded. This paper discusses the evaluation of damage during two earthquakes. Moreover, parameters such as the predominant period and the required performance are discussed. The proposed system evaluated both towers as being “elastic”. The damping ratios of the towers are very low, which caused the oscillations to continue for more than 5 min after the mainshock of each earthquake because of long-period components of the seismic motion.

Keywords

Structural health monitoring Capacity spectrum method Steel tower 

Notes

Acknowledgements

The author would like to thank the National Research Institute for Earth Science and Disaster Resilience for providing the data obtained by the Strong-motion Seismograph Networks (K-Net).

References

  1. Kusunoki K (2016) Damage evaluation of a base-isolated building with measured accelerations during tohoku earthquake. In: The 16th world conference on earthquake engineering, digitalGoogle Scholar
  2. Kusunoki K, Teshigawara M (2003) A new acceleration integration method to develop a real-time residual seismic capacity evaluation system. J Struct Constr Eng 569:119–126 (in Japanese)CrossRefGoogle Scholar
  3. Kusunoki K, Teshigawara M (2004) Development of real-time residual seismic capacity evaluation system—integral method and shaking table test with plain steel frame. In: The 13th world conference on earthquake engineering, CD-RomGoogle Scholar
  4. Kusunoki K, Elgamal A, Teshigawara M, Conte JP (2008) Evaluation of structural condition using Wavelet transforms. In: The 14th world conference on earthquake engineering, CD-RomGoogle Scholar
  5. Kusunoki K, Tasai A, Teshigawara M (2012) Development of building monitoring system to evaluate residual seismic capacity after an earthquake. In: The 15th world conference on earthquake engineering, digitalGoogle Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Earthquake Research Institute, the University of TokyoTokyoJapan

Personalised recommendations