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Bulletin of Earthquake Engineering

, Volume 17, Issue 3, pp 1715–1737 | Cite as

Generation of synthetic accelerograms for telecommunications equipment: fragility assessment of a rolling isolation system

  • Mohammad Hadikhan Tehrani
  • Philip Scott HarveyJrEmail author
Original Research
  • 143 Downloads

Abstract

This paper assesses the safety of a double conical rolling isolation system designed for protecting telecommunications equipment using a probabilistic approach. Due to the limited number of input accelerograms in the GR-63-CORE guideline for telecommunications equipment (only one), eight different filters are optimized to best capture the required response spectrum. The fitted filters are incorporated into an easy-to-implement framework, which is used to generate several suites of accelerograms for the probabilistic analyses. The results of these analyses are analyzed and discussed to reveal the shortcomings of the GR-63-CORE guideline, which in general are the limited number of accelerograms and ignoring the potentially important low frequency accelerations in the prescribed accelerogram. It is shown that the prescribed accelerogram may not be representative of excitations that are expected to be experienced by telecommunications equipment or the isolation systems protecting them, and is, hence, not conservative. Moreover, the results of the probabilistic analyses are presented in the form of fragility curves that can guide the design of rolling isolation systems.

Keywords

Synthetic accelerogram Kanai–Tajimi filter Stochastic process Spectral matching Rolling isolation system Fragility curve Signal processing 

Notes

Acknowledgements

This material is based upon work supported by the National Science Foundation under Grant No. NSF-CMMI-1663376. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.

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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  1. 1.School of Civil Engineering and Environmental ScienceUniversity of OklahomaNormanUSA

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