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Seismic Dynamic Time–Frequency Theory of Layered Site

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Abstract

Seismic response analysis of soil layer is a key study of field seismic dynamic parameters determination and geotechnical seismic design. For the seismic response analysis of soil layer, the commonly used methods at present are time-domain elastic wave propagation theory analysis method, frequency-domain elastic wave propagation theory analysis method, and numerical simulation analysis method. For these three methods, the time-domain elastic wave propagation theory analysis method came out first, but actually, it could only give solutions to field with few cover layers (1–2), and it could not consider the influence of input wave frequency on field seismic response; by principle, frequency-domain elastic wave propagation theory analysis method fit for fields with any layers, but it could only consider the harmonic wave effects with given circular frequency, and it could not comprehensively consider the influence of frequency-duration coupling effects; although numerical simulation could conduct time–frequency analysis to seismic response under earthquake, it is complex to operate, especially for field with large difference in ground layer thickness.

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Copyright information

© Science Press and Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Southwest Jiaotong UniversityChengduChina
  2. 2.China Railways CorporationBeijingChina
  3. 3.Southwest Jiaotong UniversityChengduChina
  4. 4.Sichuan Provincial Department of TransportationChengduChina

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