Earthquakes and Structures

  • 제4권5호
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  • Pages.557-585
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  • 2013
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Occurrence mechanism of recent large earthquake ground motions at nuclear power plant sites in Japan under soil-structure interaction

  • 투고 : 2012.09.10
  • 심사 : 2013.01.03
  • 발행 : 2013.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

The recent huge earthquake ground motion records in Japan result in the reconsideration of seismic design forces for nuclear power stations from the view point of seismological research. In addition, the seismic design force should be defined also from the view point of structural engineering. In this paper it is shown that one of the occurrence mechanisms of such large acceleration in recent seismic records (recorded in or near massive structures and not free-field ground motions) is due to the interaction between a massive building and its surrounding soil which induces amplification of local mode in the surface soil. Furthermore on-site investigation after earthquakes in the nuclear power stations reveals some damages of soil around the building (cracks, settlement and sand boiling). The influence of plastic behavior of soil is investigated in the context of interaction between the structure and the surrounding soil. Moreover the amplification property of the surface soil is investigated from the seismic records of the Suruga-gulf earthquake in 2009 and the 2011 off the Pacific coast of Tohoku earthquake in 2011. Two methods are introduced for the analysis of the non-stationary process of ground motions. It is shown that the non-stationary Fourier spectra can detect the temporal change of frequency contents of ground motions and the displacement profile integrated from its acceleration profile is useful to evaluate the seismic behavior of the building and the surrounding soil.

키워드

참고문헌

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피인용 문헌

  1. A new interpretation of large amplitude earthquake acceleration from non-linear local soil-structure interaction vol.273, 2014, https://doi.org/10.1016/j.nucengdes.2014.03.023
  2. New insights into seismic behavior of building and surrounding soil at Hamaoka nuclear power station during Suruga Bay earthquake in 2009 vol.53, 2013, https://doi.org/10.1016/j.soildyn.2013.06.007
  3. Analysis of Ground Motion Amplification during Soil Liquefaction via Nonstationary Fourier Spectra vol.16, pp.5, 2016, https://doi.org/10.1061/(ASCE)GM.1943-5622.0000549
  4. Non-linear transient behavior during soil liquefaction based on re-evaluation of seismic records vol.71, 2015, https://doi.org/10.1016/j.soildyn.2015.01.017
  5. Various Occurrence Mechanisms of Large Acceleration over 20 m/s2 and Its Suitability in Design Use vol.4, pp.None, 2018, https://doi.org/10.3389/fbuil.2018.00003
  6. Wave shape analysis of seismic records at borehole of TTRH02 and IWTH25 (KiK-net) vol.18, pp.3, 2013, https://doi.org/10.12989/eas.2020.18.3.297