[1]MA Rui,LI Xiaojun,RONG Mianshui,et al.Time-domain Analysis Method of Seismic Response of Soil Layer Site Considering the Pore-water Pressure Change of Sandy Soil[J].Journal of Seismological Research,2024,47(04):609-618.[doi:10.20015/j.cnki.ISSN1000-0666.2024.0014]
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Time-domain Analysis Method of Seismic Response of Soil Layer Site Considering the Pore-water Pressure Change of Sandy Soil
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
47
Number of periods:
2024 04
Page number:
609-618
Column:
Public date:
2024-12-01
- Title:
- Time-domain Analysis Method of Seismic Response of Soil Layer Site Considering the Pore-water Pressure Change of Sandy Soil
- CLC:
- TU435
- DOI:
- 10.20015/j.cnki.ISSN1000-0666.2024.0014
- Abstract:
- When analyzing the seismic response of sandy soil sites,how to reasonably consider the influence of pore pressure on site response is a major concern.In this paper,based on the soil dynamic constitutive model with dynamic skeleton curve,a dynamic stress-strain relationship is derived for sandy soil sites by introducing the pore pressure growth equation applicable to irregular loading,and a time-domain analysis method is established for the seismic response of the soil layer site considering the influence of the pore-water pressure of sandy soil.A computer program Sand Pore Pressure One-dimensional Time Domain(SPODTD)was developed based on the Matlab platform to calculate the seismic response of the soil layer site.The proposed method was validated using the observation data from the Garner Valley Downhole Array(GVDA)in the United States.The results show that the method can better simulate the influence of pore-water pressure change on ground motion for the seismic response analysis of the site with saturation sandy soil,and can obtain pore-water pressure change curves that fit well with the actual observation records,which demonstrates the practicality of the method and the reasonableness of the calculation results.
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Last Update:
2024-08-20