A PROCEDURE TO DETERMINE MATERIAL PARAMETERS BASED ON BOREHOLE DATA IN DYNAMIC ANALYSIS

Authors

  • Tomohide Takeyama
  • Kazuya Honda
  • Shinya Tachibana
  • Atsushi Iizuka

Keywords:

Elastoplastic constitutive model, Soil-water coupled problem, Finite Element Method, Compression index

Abstract

Recently, the occurrence of large earthquakes has become a concern in Japan, prompting the need for a numerical method that can accurately predict real phenomena, such as the elastoplastic soil-water coupled finite element method. Because the elastoplastic constitutive model requires many material parameters, various soil tests and specialized knowledge are needed to determine these material parameters. In this study, a new method was proposed to determine the material parameters from the limited ground information obtained by borehole inspections and the method was validated by comparing the numerical results with monitored seismic behavior. One-dimensional seismic analyses were conducted using the material parameters estimated from borehole data near the target sites. It was confirmed that the amplitude and predominant period obtained by numerical simulation were consistent with the monitored data. As a result, it was found that the dynamic numerical result was more consistent with the monitored data when the compression index was set to be larger than that in the static analysis.

Downloads

Published

2021-09-30

How to Cite

Tomohide Takeyama, Kazuya Honda, Shinya Tachibana, & Atsushi Iizuka. (2021). A PROCEDURE TO DETERMINE MATERIAL PARAMETERS BASED ON BOREHOLE DATA IN DYNAMIC ANALYSIS. GEOMATE Journal, 21(85), 1–9. Retrieved from https://geomatejournal.com/geomate/article/view/57

Most read articles by the same author(s)