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Analytical solution for vertical site response analysis and its validation

  • Junwei Liu
  • Xiao Zhang
  • Zewei Cao
  • Bo HanEmail author
  • Shizeng Yang
Article
  • 37 Downloads

Abstract

Existing studies for site response analysis in geotechnical earthquake engineering have widely concentrated on the horizontal component of the ground motion. However, strong vertical ground motions have been repeatedly observed, resulting in significant vertical compression damage of engineering structures. Furthermore, for the seismic design of critical structures (e.g. large-scale dams and nuclear power plants), the ground motions in all three directions should be considered. Therefore, there is a need to investigate the site response subjected to the vertical component of the ground motion, especially for the seismic design of critical structures. Consequently, in this study, a numerical program for vertical site response analysis is proposed based on the commonly used analytical transfer function method. The proposed program is then validated against well-documented case studies obtained from the Japanese KiK-net (Kiban Kyoshin network) downhole array monitoring system. Results show that the response spectra at the ground surface are well predicted in the low frequency range (<5 Hz), while discrepancies are observed in the high frequency range. However, the high frequency discrepancies do not significantly affect the overall prediction accuracy, as the overall seismic response of geotechnical structures are usually dominated by low frequency vibrations. Furthermore, the limitations in the analysis are also discussed.

Keywords

site response analysis vertical ground motions transfer function analytical solution 

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Notes

Acknowledgement

This work was supported by the National Natural Science Foundation of China (Grant No. 51579154) and the Natural Science Foundation of Shandong Province (Grant No. ZR2018QEE008).

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Copyright information

© Institute of Engineering Mechanics, China Earthquake Administration and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Junwei Liu
    • 1
  • Xiao Zhang
    • 2
  • Zewei Cao
    • 3
  • Bo Han
    • 2
    Email author
  • Shizeng Yang
    • 4
  1. 1.School of Civil EngineeringQingdao University of TechnologyQingdaoChina
  2. 2.School of Civil EngineeringShandong UniversityJinanChina
  3. 3.Nantong Municipal Engineering Design Institute Co. Ltd.NantongChina
  4. 4.Huangdao Municipal Water Resources BureauQingdaoChina

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