Anisotropy and heterogeneity of gravelly soil layer in Hualien, Taiwan

Y. Tanaka, T. Okamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The Hualien Large-Scale Seismic Test program is under way to investigate Soil-Structure Interaction during large earthquakes in the field of Hualien, a high seismic region in Taiwan. In this report, the ground of the test site, which consists of a sand layer and a hard gravelly layer of Pleistocene origin, was characterized and modeled for accurate dynamic simulation analysis. The following conclusions were drawn. (1) It was revealed that anisotropic behavior of the gravelly layer observed in earthquake observation and forced vibration tests could be expressed by the orthotropic elastic body model. (2) For sands, the shear wave velocity measured by cyclic triaxial tests was almost the same as that by the velocity logging, whereas shear wave velocity of gravelly soils measured by cyclic triaxial tests was much smaller than that by the velocity logging. This difference is attributable to the effect of heterogeneity in the gravelly soil layer.

Original languageEnglish
Title of host publicationThe geotechnics of hard soils - soft rocks. Proceedings of the second international symopsium on hard soils-soft rocks, Naples, October 1998. (Two volumes).
EditorsA. Evangelista, L. Picarelli, A. Evangelista, L. Picarelli
PublisherA.A.Balkema
Pages889-900
Number of pages12
ISBN (Print)9058090183
Publication statusPublished - 1998 Dec 1
EventProceedings of the second international symposium on hard soils-soft rocks 1998. - Naples, Italy
Duration: 2098 Oct 122098 Oct 14

Conference

ConferenceProceedings of the second international symposium on hard soils-soft rocks 1998.
CountryItaly
CityNaples
Period98/10/1298/10/14

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

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  • Cite this

    Tanaka, Y., & Okamoto, T. (1998). Anisotropy and heterogeneity of gravelly soil layer in Hualien, Taiwan. In A. Evangelista, L. Picarelli, A. Evangelista, & L. Picarelli (Eds.), The geotechnics of hard soils - soft rocks. Proceedings of the second international symopsium on hard soils-soft rocks, Naples, October 1998. (Two volumes). (pp. 889-900). A.A.Balkema.