Stress dependency of shear-wave velocity measurements in soils

Taeseo Ku, Sathya Subramanian, Sung-Woo Moon, Jongwon Jung

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Based on an extensive in situ shear-wave velocity (Vs) database, this study aims to not only examine the stress-dependent characteristics of in situ Vs from a generalized Vs-stress model [Vs=α×(σc')β], but also provide valuable reference information on site-specific stress-dependency of Vs for global geotechnical sites. For in situ Vs, the site-specific material constants (α and β) at each site had wider ranges when compared to typical values reported from laboratory tests. This is mainly attributed to different test conditions and inherent in situ site characteristics. The in situ-based site-specific material constants in this study are compared with laboratory-based material constants suggested in previous studies. Evidently, each α-β trend varies on laboratory tests and in situ tests and a unified relationship is appropriate only when β is less than 0.5. Thus, separate relationships between material constants are proposed for laboratory-based and in situ-based measurements. The results imply that the new models should be developed to apply in situ data.

Original languageEnglish
Article number04016092
JournalJournal of Geotechnical and Geoenvironmental Engineering
Volume143
Issue number2
DOIs
Publication statusPublished - Feb 1 2017
Externally publishedYes

Keywords

  • Anisotropy
  • In situ data
  • Shear-wave velocity
  • Stress dependency
  • Stress model

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Environmental Science(all)

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